{"title":"990, 991 And 177230 Transmitter","description":"\u003cp\u003eThe Bently Nevada 990, 991, and 177230 series represent a specialized line of compact, high-precision vibration and thrust transmitters designed for seamless integration with PLC and DCS systems via standard 4-20 mA loop power. The 990 Proximity Transmitter and 991 Thrust Transmitter utilize eddy current technology to provide non-contacting measurement of shaft vibration and axial position, featuring a robust 35mm DIN-rail mountable form factor that eliminates the need for external Proximitor® sensors. Complementing these, the 177230 Seismic Vibration Transmitter serves as a self-contained piezo-velocity sensor that outputs a peak velocity signal, ideal for monitoring general-purpose machinery like motors and fans. Engineered for harsh industrial environments, these transmitters offer ProLink configuration compatibility and integrated BNC connectors for portable data collector access, ensuring reliable condition monitoring and machinery protection without the complexity of a full-scale rack system.\u003c\/p\u003e","products":[{"product_id":"177230-00-01-05-bently-nevada-seismic-transmitter-4-20ma","title":"177230-00-01-05 Bently Nevada Seismic Transmitter 4-20mA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview \u0026amp; Configuration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #1d4ed8; font-weight: bold;\"\u003e177230-00-01-05\u003c\/span\u003e \u003cspan style=\"color: #1d4ed8; font-weight: bold;\"\u003eBently Nevada\u003c\/span\u003e \u003cspan style=\"color: #1d4ed8; font-weight: bold;\"\u003e177230\u003c\/span\u003e \u003cspan style=\"color: #1d4ed8; font-weight: bold;\"\u003eSeismic Transmitter\u003c\/span\u003e converts absolute vibration directly into a standard 4-20 mA loop current. Process control engineers rely on this robust instrument for direct integration into plant PLC, DCS, and SCADA monitoring architectures.\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eConfiguration Suffix\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSelected Option\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eEngineering Definition\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase Model\u003c\/td\u003e\n\u003ctd\u003e177230\u003c\/td\u003e\n\u003ctd\u003eSeismic Transmitter core architecture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd\u003eOption 00\u003c\/td\u003e\n\u003ctd\u003e0 to 12.7 mm\/s (0 to 0.5 in\/s) RMS velocity span\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003eOption 01\u003c\/td\u003e\n\u003ctd\u003e10 Hz to 1 kHz (600 to 60 kcps) RMS filtering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAgency Approvals\u003c\/td\u003e\n\u003ctd\u003eOption 05\u003c\/td\u003e\n\u003ctd\u003eCSA\/NRTL\/C, ATEX, and IECEx hazardous area certifications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eCore Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003ePerformance Metric\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eOperating Parameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExcitation Voltage \u0026amp; Loop Current\u003c\/td\u003e\n\u003ctd\u003e12 to 30 Vdc (current limited to 40 mA; optimized for 30-35 mA control loops)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal \u0026amp; Wiring\u003c\/td\u003e\n\u003ctd\u003e4-20 mA current loop on Pin A\/B with unbuffered dynamic acceleration signal on Pin C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensing Element\u003c\/td\u003e\n\u003ctd\u003ePiezoelectric ceramic shear structure with \u0026gt;12 kHz mounted resonance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental \u0026amp; Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C operating span; hermetically sealed 316L stainless steel housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Dimensions \u0026amp; Weight\u003c\/td\u003e\n\u003ctd\u003e25.4 mm (1.00 in) diameter, 66.0 mm (2.60 in) height; weighs 131 g (4.62 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Mechanical Guidelines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEnsure mounting surfaces are flat and spot-faced to prevent base strain distortion.\u003c\/li\u003e\n\u003cli\u003eApply a calibrated mounting torque between 4 to 7 N-m (35.4 to 62.0 in-lbf).\u003c\/li\u003e\n\u003cli\u003eUtilize flexible adapter studs (M6X1, M8x1.25, or 1\/4-28 UNF) matching your machine boss.\u003c\/li\u003e\n\u003cli\u003eVerify loop power supply capability handles the 12 to 30 Vdc excitation requirement safely.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eEquipment Compatibility \u0026amp; Selection Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eDeploying absolute vibration transmitters requires matching electrical loop characteristics to existing control hardware:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSelection Tip: Choose the \u003cspan style=\"color: #1d4ed8; font-weight: bold;\"\u003e177230-00-01-05\u003c\/span\u003e when your PLC or SCADA system requires direct 4-20 mA velocity integration without intermediate rack monitors.\u003c\/li\u003e\n\u003cli\u003eSystem Integration: Pin C provides an unbuffered dynamic acceleration output for temporary diagnostic data collection using portable analyzers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTypical Applications \u0026amp; Diagnostic Capabilities\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMonitors overall casing structural vibration on balance-of-plant pumps, fans, and cooling towers.\u003c\/li\u003e\n\u003cli\u003eProvides continuous trend data to detect structural looseness, unbalance, and bearing wear early.\u003c\/li\u003e\n\u003cli\u003ePerforms reliably in condensing, 100% humidity environments without moisture ingress failure.\u003c\/li\u003e\n\u003cli\u003eMaintains signal stability in high electromagnetic interference areas due to robust 316L shielding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eInstrumentation specialists often overlook loop resistance limits when tying 2-wire transmitters into long control cable runs. Our engineering team recommends checking that total loop resistance does not exceed voltage drop thresholds at 12 Vdc minimum excitation. Utilizing shielded twisted-pair cabling for Pins A and B successfully eliminates common-mode ground noise in heavy industrial switchyards.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCompliance, Warranty \u0026amp; Logistics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCertifications: CSA, NRTL\/C, ATEX, and IECEx hazardous location approvals.\u003c\/li\u003e\n\u003cli\u003eQuality Warranty: Backed by a full 12-month industrial replacement warranty.\u003c\/li\u003e\n\u003cli\u003eFulfillment Logistics: Rapid 24-48 hour global dispatch via FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eProfessional Frequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the exact function of Pin C on the \u003cspan style=\"color: #1d4ed8; font-weight: bold;\"\u003e177230-00-01-05\u003c\/span\u003e transmitter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Pin C outputs an unbuffered dynamic acceleration signal referenced to Pin B, allowing engineers to plug in portable vibration analyzers for advanced FFT spectral diagnostics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I power this seismic transmitter with a standard 24 Vdc PLC analog input card?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, as long as the analog input card supplies an excitation voltage between 12 and 30 Vdc and accommodates loop current draws up to 40 mA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does hermetic sealing protect the internal piezoelectric shear element?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The laser-welded 316L stainless steel enclosure prevents moisture and corrosive gases from degrading the internal ceramic sensing core during high-humidity washdowns.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What causes erroneous spikes in the 4-20 mA velocity output loop?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Inadequate cable shielding or ground loops tied to Pin B typically introduce electrical noise, which can be resolved by properly floating or single-point grounding the shield drain.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is proper mounting torque critical for ceramic shear accelerometers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Under-torquing reduces high-frequency response, while over-torquing can strip the 1\/4-28 UNF mounting stud or warp the transducer base, altering sensitivity.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/177230.png?v=1787038759\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013811790006,"sku":"177230-00-01-05","price":163.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/177230_1_0143d2a2-0f07-46cf-816b-703fd16a6fed.png?v=1789454695"},{"product_id":"990-04-xx-01-00-proximity-transmitter-bently-nevada-4-20ma-output","title":"990-04-XX-01-00 Proximity Transmitter Bently Nevada 4-20mA Output","description":"\u003ch3\u003e\u003cstrong\u003eProduct Introduction\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e990-04-XX-01-00\u003c\/strong\u003e (MOD 147202-01) is a specialized 2-wire vibration transmitter designed to integrate proximity probe signals directly into PLC or DCS control systems. This \u003cstrong\u003eBently Nevada 990\u003c\/strong\u003e unit provides a proportional 4 to 20 mA output, representing a full-scale range of 0-4 mils pp. It is engineered for critical machinery where a traditional monitor rack is not feasible. We recommend downloading the \u003cstrong\u003e990 series\u003c\/strong\u003e wiring schematic to ensure proper loop resistance balancing. Contact our technical desk for the official \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Vibration_Transmitter_Datasheet_-_141612_0a788280-dc17-4c54-adce-e1d727f18373.pdf?v=1776937601\"\u003e\u003cstrong\u003e990-04-XX-01-00\u003c\/strong\u003e technical data sheet\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFrom an engineering perspective, the \u003cstrong\u003e990-04-XX-01-00\u003c\/strong\u003e is the go-to solution for high-density plant integration. Its most significant advantage is the non-interacting zero and span adjustments, which simplify field calibration immensely. Unlike standard proximity systems, the \u003cstrong\u003eBently Nevada 990\u003c\/strong\u003e features a \"Not OK\" signal defeat. If a probe fault occurs, the output drops below 3.6 mA in less than 100 µs, preventing false trips in your control logic. The \u003cstrong\u003e990-04-XX-01-00\u003c\/strong\u003e is specifically optimized for use with 3300 NSv probes, which are essential for small-diameter shafts or constrained target areas.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Parameters \u0026amp; Performance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: \u003cstrong\u003eBently Nevada\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel\u003c\/strong\u003e: \u003cstrong\u003e990-04-XX-01-00\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: \u003cstrong\u003e990 Vibration Transmitter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-Scale Range\u003c\/strong\u003e: 0-4 mils pp (0-100 μm pp)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Signal\u003c\/strong\u003e: 4 to 20 mAdc (2-wire configuration)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Accuracy\u003c\/strong\u003e: Within ±1.5% of full-scale\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response\u003c\/strong\u003e: 5 Hz to 6,000 Hz (+0, -3 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Requirements\u003c\/strong\u003e: +12 to +35 Vdc at terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Loop Resistance\u003c\/strong\u003e: 1,000 Ω at 35 Vdc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Limiting\u003c\/strong\u003e: 23 mA typical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Gapping\u003c\/strong\u003e: 0.5 to 1.75 mm (20 to 55 mils)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Rating\u003c\/strong\u003e: CSA Division 2 \/ Zone 2 compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmitter Weight\u003c\/strong\u003e: 0.43 kg (0.9 lbm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eConfiguration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e990\u003c\/strong\u003e — Vibration Transmitter Series\u003cbr\u003e  └── \u003cstrong\u003e-04\u003c\/strong\u003e (Full-scale Option)\u003cbr\u003e      └── 0-4 mils pp (0-100 μm pp) range\u003cbr\u003e  └── \u003cstrong\u003e-XX\u003c\/strong\u003e (System Length Option)\u003cbr\u003e      └── \u003cstrong\u003e-50\u003c\/strong\u003e: 5.0 meters (16.4 feet)\u003cbr\u003e      └── \u003cstrong\u003e-70\u003c\/strong\u003e: 7.0 meters (23.0 feet)\u003cbr\u003e  └── \u003cstrong\u003e-01\u003c\/strong\u003e (Mounting Option)\u003cbr\u003e      └── CSA Division 2 \/ Zone 2 compliant\u003cbr\u003e  └── \u003cstrong\u003e-00\u003c\/strong\u003e (Agency Approval Option)\u003cbr\u003e      └── Not required \/ Standard build\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; System Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Source\u003c\/strong\u003e: Specifically accepts 1 non-contacting 3300 NSv Proximity Probe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Size\u003c\/strong\u003e: Minimum required target diameter is 9.5 mm (0.375 in).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBNC Output\u003c\/strong\u003e: Front-facing BNC provides a raw Proximitor signal for field diagnostics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Wiring\u003c\/strong\u003e: Accepts standard twisted-pair shielded cable for the 4-20mA loop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting\u003c\/strong\u003e: Designed for DIN rail or bulkhead installation in protective enclosures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication Scenarios \u0026amp; Diagnostic Capabilities\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall Turbomachinery\u003c\/strong\u003e: Ideal for pumps and fans with small shaft diameters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect DCS Integration\u003c\/strong\u003e: Eliminates the need for intermediary 3500 series monitor racks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThrust \u0026amp; Radial Vibration\u003c\/strong\u003e: Monitors shaft position and dynamic motion in balance-of-plant assets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFault Diagnostics\u003c\/strong\u003e: Sub-3.6 mA output allows the DCS to distinguish between \"High Vibration\" and \"Sensor Failure.\"\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eShipping \u0026amp; Warranty\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCourier Partners\u003c\/strong\u003e: Fast global transit via \u003cstrong\u003eFedEx\u003c\/strong\u003e, \u003cstrong\u003eUPS\u003c\/strong\u003e, and \u003cstrong\u003eDHL\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder Processing\u003c\/strong\u003e: Dispatched within 24-48 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Support\u003c\/strong\u003e: Includes a comprehensive \u003cstrong\u003e12-month professional warranty\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin\u003c\/strong\u003e: Manufactured in the U.S.A.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e What happens to the \u003cstrong\u003e990-04-XX-01-00\u003c\/strong\u003e output if the probe cable is cut?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e The transmitter enters a \"Not OK\" state, dropping the loop current below 3.6 mA within 100 microseconds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e Can I use a standard 3300 XL 8mm probe with the \u003cstrong\u003e990\u003c\/strong\u003e transmitter?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e No, the \u003cstrong\u003e990-04-XX-01-00\u003c\/strong\u003e is specifically tuned for the electrical characteristics of the 3300 NSv probe series.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e Is the \u003cstrong\u003e990-04-XX-01-00\u003c\/strong\u003e zero\/span adjustment sensitive to loop resistance?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e No, the adjustments are non-interacting, allowing for precise calibration regardless of the external loop load.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e Why is my \u003cstrong\u003e990\u003c\/strong\u003e signal flickering during startup?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e Ensure the probe is gapped between 20 and 55 mils; values outside this range will cause signal instability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e Does the \u003cstrong\u003e990-04-XX-01-00\u003c\/strong\u003e require a separate Proximitor?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e No, the \u003cstrong\u003e990\u003c\/strong\u003e unit functions as both the Proximitor and the 4-20mA transmitter in one housing.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSelection \u0026amp; Buying Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Matching\u003c\/strong\u003e: Match the \u003cstrong\u003e-XX\u003c\/strong\u003e option strictly to your probe\/extension cable total length (5m or 7m).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgency Check\u003c\/strong\u003e: If your facility requires explosion-proof ratings, ensure the \u003cstrong\u003e-01\u003c\/strong\u003e option fits your site classification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Area\u003c\/strong\u003e: Verify your shaft target area meets the 9.5 mm minimum diameter to avoid \"edge effects\" in data.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply\u003c\/strong\u003e: For maximum accuracy, provide a stable 28 Vdc supply to the 4-20mA loop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures.png?v=1775026312\" alt=\"990 Graphs and Figures\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013883355318,"sku":"990-04-XX-01-00","price":214.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_3.jpg?v=1775025777"},{"product_id":"991-06-70-02-05-bently-nevada-991-series-thrust-transmitter-7-m-4-20-ma","title":"991-06-70-02-05 Bently Nevada 991 Series Thrust Transmitter – 7 m 4–20 mA","description":"\u003ch2\u003eBently Nevada 991-06-70-02-05 Thrust Transmitter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 991-06-70-02-05\u003c\/strong\u003e is a 991 Series thrust transmitter designed for axial displacement monitoring. It accepts a compatible 3300 NSv proximity probe and extension cable and converts the measurement into a two-wire 4–20 mA DC signal for compatible PLC, DCS, and machinery monitoring systems.\u003c\/p\u003e\n\u003cp\u003eWith a 7.0 m (23.0 ft) system length and a ±0.6 mm full-scale measurement range, this transmitter supports continuous monitoring of shaft axial position in turbines, compressors, pumps, and other rotating machinery. Correct probe-system matching, loop power calculation, and signal scaling are essential for reliable measurement.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003e991-06-70-02-05\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/990-991-and-177230-transmitter\"\u003e991 Series\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eThrust Transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCountry of Origin\u003c\/th\u003e\n\u003ctd\u003eUSA (as specified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMeasurement\u003c\/th\u003e\n\u003ctd\u003eAxial displacement \/ thrust position\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput Signal\u003c\/th\u003e\n\u003ctd\u003e4–20 mA DC, two-wire configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFull-Scale Range\u003c\/th\u003e\n\u003ctd\u003e0.6–0–0.6 mm (±0.6 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Length\u003c\/th\u003e\n\u003ctd\u003e7.0 m (23.0 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Probe System\u003c\/th\u003e\n\u003ctd\u003eOne 3300 NSv proximity probe and extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eConfirm the required mounting arrangement against the exact ordering configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e+12 to +35 V DC at the transmitter terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTypical Loop Accuracy\u003c\/th\u003e\n\u003ctd\u003e±1.5% of specified full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaximum Loop Resistance\u003c\/th\u003e\n\u003ctd\u003e1,000 Ω including cable at 35 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCurrent Limiting\u003c\/th\u003e\n\u003ctd\u003e23 mA typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temperature\u003c\/th\u003e\n\u003ctd\u003e−35°C to +85°C (−31°F to +185°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage Temperature\u003c\/th\u003e\n\u003ctd\u003e−51°C to +100°C (−60°F to +212°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e0.43 kg (0.9 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e12 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eShipping Methods\u003c\/th\u003e\n\u003ctd\u003eDHL, FedEx, UPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eConfiguration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe model number identifies the transmitter series and its specified ordering options.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e991 - 06 - 70 - 02 - 05\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e991\u003c\/strong\u003e — 991 Series thrust transmitter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e06\u003c\/strong\u003e — Full-scale option: 0.6–0–0.6 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e70\u003c\/strong\u003e — System length: 7.0 m (23.0 ft).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e02\u003c\/strong\u003e — Ordering information specifies bulkhead screws as the mounting option.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e05\u003c\/strong\u003e — Agency approval option listed as CSA Division 2, ATEX Zone 0, ATEX Zone 2, and ABS maritime approval.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration note:\u003c\/strong\u003e The supplied information also lists DIN-rail mounting. Since this differs from the stated bulkhead-screw mounting option, verify the exact model code and manufacturer's documentation before ordering or installation. Confirm the applicable certification documents for the exact configuration, particularly for hazardous-area applications.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features and Engineering Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4–20 mA current-loop output:\u003c\/strong\u003e Converts the compatible proximity probe signal into a standard analog signal for compatible PLC, DCS, and machinery monitoring inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e±0.6 mm measurement range:\u003c\/strong\u003e Supports axial displacement monitoring around a defined zero reference. Correct mechanical positioning is essential to preserve the required measurement margin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal zero and span adjustments:\u003c\/strong\u003e Allow calibration of the measurement reference and output range during commissioning and maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot OK signal response:\u003c\/strong\u003e The specified output falls below 3.6 mA within 100 µs after a Not OK condition occurs and is restored within 0.1 seconds after the condition clears.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide DC supply range:\u003c\/strong\u003e Requires +12 to +35 V DC at the transmitter terminals. Available voltage must be checked under actual loop load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial temperature range:\u003c\/strong\u003e Operating limits of −35°C to +85°C support installation in demanding machinery environments within the specified limits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatible Equipment and Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteam and gas turbines:\u003c\/strong\u003e Axial shaft displacement trending and machinery condition monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial compressors:\u003c\/strong\u003e Monitoring axial movement where required by the machine design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial pumps:\u003c\/strong\u003e Displacement monitoring for equipment with a defined axial-position measurement requirement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGearboxes and rotating machinery:\u003c\/strong\u003e Monitoring axial position changes when the selected probe system and measurement range are suitable.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePLC and DCS systems:\u003c\/strong\u003e Analog signal integration with compatible 4–20 mA input channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachinery monitoring systems:\u003c\/strong\u003e Continuous signal trending and investigation of abnormal displacement readings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility warning:\u003c\/strong\u003e This transmitter is intended for a compatible 3300 NSv proximity probe and extension cable. Do not substitute another probe family based only on connector appearance or the availability of a 4–20 mA interface.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDiagnostic Capabilities and Troubleshooting\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe transmitter converts axial displacement measurements into a current-loop signal. Its output can help maintenance engineers identify abnormal readings, but a low-current signal does not necessarily indicate an internal transmitter failure.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eObserved Condition\u003c\/th\u003e\n\u003cth\u003eRecommended Checks\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput below 3.6 mA\u003c\/td\u003e\n\u003ctd\u003eCheck the Not OK condition, transmitter supply voltage, loop continuity, wiring polarity, probe, and extension cable.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStable current but incorrect displayed displacement\u003c\/td\u003e\n\u003ctd\u003eVerify zero and span, PLC\/DCS scaling, engineering units, and the configured measurement range.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFluctuating output during operation\u003c\/td\u003e\n\u003ctd\u003eInspect cable routing, loose connections, electrical interference, grounding, and actual mechanical movement.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput changes when the loop load increases\u003c\/td\u003e\n\u003ctd\u003eMeasure the transmitter terminal voltage and calculate the total loop resistance, including the receiving input and cable.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation and Commissioning Guidelines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify loop power and resistance.\u003c\/strong\u003e Measure the DC voltage at the transmitter terminals under load. Ensure the available supply voltage and total loop resistance remain within the specified limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm the complete probe system.\u003c\/strong\u003e Check the proximity probe and extension cable part numbers, total system length, mounting arrangement, and mechanical clearance before commissioning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValidate scaling and fault handling.\u003c\/strong\u003e Confirm the 4–20 mA engineering range, zero reference, alarm thresholds, and receiving-system response to a Not OK signal. Perform fault simulation only under an approved maintenance procedure.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB Review\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Bently Nevada 991-06-70-02-05 is a specialized option for machinery applications requiring a 4–20 mA axial displacement signal. Its suitability depends on the specified 7.0 m system length, ±0.6 mm measurement range, compatible 3300 NSv probe system, and receiving instrument requirements.\u003c\/p\u003e\n\u003cp\u003eBefore purchasing a replacement, verify the complete part number, installation arrangement, electrical loop requirements, and applicable approvals. These checks help reduce commissioning delays and prevent incompatibility between the transmitter, probe system, and control equipment.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eField tip:\u003c\/strong\u003e If a replacement transmitter produces a plausible current but the DCS displays an incorrect axial displacement, check the receiving channel's scaling and zero reference before replacing additional hardware. A mismatch between the transmitter range and the configured engineering range can create misleading readings even when the current loop is functioning correctly.\u003c\/p\u003e\n\u003cp\u003eFor intermittent or low-current faults, record the transmitter terminal voltage, loop current, receiving-channel status, and probe-system part numbers. Comparing these readings helps distinguish a wiring fault, a probe-system issue, a configuration error, and a possible transmitter failure.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWarranty and Shipping\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 months.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping:\u003c\/strong\u003e DHL, FedEx, and UPS options available.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder verification:\u003c\/strong\u003e Confirm the full model code, mounting arrangement, system length, measurement range, and required approvals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical support:\u003c\/strong\u003e Provide the existing part number and application details to help verify replacement compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1. What should I check if the axial displacement reading changes significantly during startup?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCompare the transmitter trend with other available machinery measurements and the machine's expected startup behavior. Check mechanical clearance, probe mounting, cable routing, and electrical interference. Do not assume that a startup-related change is a transmitter fault until actual shaft movement and signal integrity have been evaluated.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2. How should I choose a replacement if the existing transmitter uses a different measurement range?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the machine manufacturer's allowable axial movement, the required measurement margin, the probe system, and the receiving instrument's engineering scale. A replacement with a different range may require revised scaling and alarm settings. Obtain engineering approval before changing a safety- or protection-related measurement configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3. Can this transmitter connect directly to every 4–20 mA analog input?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Verify whether the receiving input is suitable for a two-wire loop, its input burden, wiring polarity, and available loop voltage. The total resistance of the cable, input channel, and any series devices must remain within the transmitter's specified limit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4. What information helps identify the cause of an intermittent low-current signal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRecord the loop current, voltage at the transmitter terminals, controller input status, and the timing of the fault. Inspect connectors and cable continuity, and check whether the transmitter reports a Not OK condition. Correlating these observations with machine operating conditions can help isolate the fault more efficiently.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5. What should be verified before installing this transmitter in a hazardous area?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCheck the exact model and suffix against the manufacturer's certification documents, the site's hazardous-area classification, and the approved installation design. Confirm any required associated apparatus, wiring method, and equipment approvals. Do not rely solely on a general product description to establish suitability for a specific hazardous location.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_524659a5-cbca-478a-b812-374d1b70ec8e.png?v=1784875246\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013885714614,"sku":"991-06-70-02-05","price":258.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_2_1c1e3fb6-8a53-4fbd-ac68-c09a240f8b25.jpg?v=1792734032"},{"product_id":"991-25-50-01-05-bently-nevada-991-thrust-transmitter","title":"991-25-50-01-05 Bently Nevada 991 Thrust Transmitter","description":"\u003ch3\u003e\u003cstrong\u003eBently Nevada 991-25-50-01-05 | Axial Thrust Transmitter\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #2e74b5;\"\u003eBently Nevada 991-25-50-01-05\u003c\/span\u003e\u003c\/strong\u003e is a DIN-rail-mounted transmitter designed for axial position and thrust-related displacement monitoring. It accepts one compatible \u003cstrong\u003e3300 NSv proximity probe\u003c\/strong\u003e and extension cable, then converts the measured displacement into a two-wire 4–20 mA DC signal.\u003c\/p\u003e\n\u003cp\u003eThis configuration uses a symmetrical \u003cstrong\u003e25-0-25 mil\u003c\/strong\u003e full-scale option and a 5.0 m system-length option. It supports integration with compatible PLC, DCS, and machinery monitoring inputs. Its NOT OK function drives the current output below 3.6 mA when a qualifying measurement-system fault occurs.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eConfiguration Map | Decode the Ordering Number\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eCode\u003c\/th\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eConfiguration Meaning\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e991\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eThrust transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e25\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFull-scale option\u003c\/td\u003e\n\u003ctd\u003e25-0-25 mils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e50\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSystem-length option\u003c\/td\u003e\n\u003ctd\u003e5.0 m (16.4 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e01\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMounting option\u003c\/td\u003e\n\u003ctd\u003e35 mm DIN-rail clips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e05\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAgency approval option\u003c\/td\u003e\n\u003ctd\u003eCSA Division 2, ATEX Zone 0, ATEX Zone 2, and ABS maritime approval, as specified for this option\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eOrdering-code structure:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e991\u003c\/strong\u003e — transmitter model\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-25\u003c\/strong\u003e — 25-0-25 mil full-scale option\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-50\u003c\/strong\u003e — 5.0 m system-length option\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-01\u003c\/strong\u003e — 35 mm DIN-rail mounting option\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e-05\u003c\/strong\u003e — specified agency approval package\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways verify the complete ordering code and the applicable approval documents before replacing a transmitter. Hazardous-area and maritime approvals apply only under their stated conditions and installation requirements.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specification Register\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e991-25-50-01-05\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eThrust transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Purpose\u003c\/td\u003e\n\u003ctd\u003eAxial position \/ thrust-related displacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Input\u003c\/td\u003e\n\u003ctd\u003eOne non-contacting 3300 NSv proximity probe and extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull-Scale Option\u003c\/td\u003e\n\u003ctd\u003e25-0-25 mils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLinear Range\u003c\/td\u003e\n\u003ctd\u003e0.25–1.65 mm for Prox Out; suitable for 0.6-0-0.6 mm or 25-0-25 mil current-loop linear ranges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e4–20 mA DC, two-wire configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 V DC at transmitter terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Loop Accuracy\u003c\/td\u003e\n\u003ctd\u003eWithin ±1.5% of specified full-scale range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy Test Conditions\u003c\/td\u003e\n\u003ctd\u003eRated from TEST signal input to voltage measured across a 250 Ω loop resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1,000 Ω including cable at 35 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Current Limiting\u003c\/td\u003e\n\u003ctd\u003e23 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZero and Span\u003c\/td\u003e\n\u003ctd\u003eNon-interacting external adjustments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNOT OK Output Response\u003c\/td\u003e\n\u003ctd\u003eOutput falls below 3.6 mA within 100 μs after a NOT OK condition occurs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Recovery\u003c\/td\u003e\n\u003ctd\u003eOutput restored within 0.1 seconds after the NOT OK condition is removed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003e35 mm DIN rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Operating Temperature\u003c\/td\u003e\n\u003ctd\u003e−35°C to +85°C (−31°F to +185°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Storage Temperature\u003c\/td\u003e\n\u003ctd\u003e−51°C to +100°C (−60°F to +212°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.43 kg (0.9 lbm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApproval Option\u003c\/td\u003e\n\u003ctd\u003eCSA Division 2, ATEX Zone 0, ATEX Zone 2, and ABS maritime approval, subject to official documentation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eRange clarification:\u003c\/strong\u003e The 25-0-25 mil option describes a bidirectional measurement range around a central reference. Confirm the configured engineering range and scaling in the receiving system. Do not assume that every 4–20 mA channel automatically interprets the signal as a centered axial range.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHow It Fits into an Axial Position Monitoring Loop\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe transmitter converts a proximity probe measurement into a current signal that a compatible control or monitoring system can read. Accurate results depend on the probe assembly, mechanical target, supply voltage, loop resistance, and channel scaling.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe measurement:\u003c\/strong\u003e The compatible 3300 NSv probe senses the position of a conductive target without contact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal conversion:\u003c\/strong\u003e The transmitter converts the probe signal into a 4–20 mA output across the configured measurement range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem interface:\u003c\/strong\u003e A PLC, DCS, or monitoring input receives the current signal for display, trending, and alarm logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFault signaling:\u003c\/strong\u003e A qualifying NOT OK condition drives the output below 3.6 mA, allowing compatible receiving equipment to identify an abnormal measurement state.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField adjustment:\u003c\/strong\u003e External zero and span adjustments support calibration of the measurement output within the manufacturer's procedure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe transmitter supplies an axial displacement-related signal. It does not independently determine thrust force. Mechanical thrust interpretation depends on the machine design, probe location, target geometry, and configured alarm limits.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWhere Engineers Commonly Apply This Transmitter\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteam and gas turbines:\u003c\/strong\u003e Monitor axial shaft position as part of a broader machinery condition monitoring arrangement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial compressors:\u003c\/strong\u003e Provide axial displacement data to compatible control and monitoring systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge pumps and rotating machinery:\u003c\/strong\u003e Track changes in shaft position where the equipment design supports proximity-probe measurement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower generation equipment:\u003c\/strong\u003e Integrate axial position measurements into operator displays, trend histories, and engineered alarm logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine machinery applications:\u003c\/strong\u003e Consider use where the required ABS approval and installation conditions are verified for the specific installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlant retrofits:\u003c\/strong\u003e Replace a matching transmitter where the probe system, range, mounting, power supply, and approvals align with the existing design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation and Commissioning: Practical Checks\u003c\/strong\u003e\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm the measurement design.\u003c\/strong\u003e Verify the required axial measurement range, the probe's position relative to the target, and the machine manufacturer's measurement recommendations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the complete sensor assembly.\u003c\/strong\u003e Confirm the 3300 NSv probe and extension cable are compatible with the 5.0 m system-length configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect DIN-rail mounting.\u003c\/strong\u003e Secure the transmitter using the specified 35 mm DIN-rail clips and maintain access for wiring and adjustment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify the DC supply.\u003c\/strong\u003e Measure the voltage at the transmitter terminals. Ensure it remains within +12 to +35 V DC under operating load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalculate loop resistance.\u003c\/strong\u003e Include field wiring, receiving-input resistance, and other series devices. The maximum stated resistance is 1,000 Ω at 35 V DC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfigure the analog input.\u003c\/strong\u003e Set the receiving channel for 4–20 mA and enter the correct bidirectional range and engineering units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck zero and span.\u003c\/strong\u003e Follow the manufacturer's calibration procedure. Avoid adjusting the transmitter to compensate for a mechanical alignment or probe-gap problem.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValidate fault handling.\u003c\/strong\u003e Confirm that the receiving system interprets current below 3.6 mA as intended and that recovery behavior matches the configured logic.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFor hazardous-area installations, confirm the certificate, equipment marking, wiring method, and installation conditions against the actual site classification. The presence of an approval option does not by itself establish suitability for every hazardous location.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eField Diagnostics | From Symptom to Verification\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSymptom\u003c\/th\u003e\n\u003cth\u003ePotential Cause\u003c\/th\u003e\n\u003cth\u003eRecommended Check\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent output below 3.6 mA\u003c\/td\u003e\n\u003ctd\u003eNOT OK condition, probe fault, cable fault, or measurement-chain problem\u003c\/td\u003e\n\u003ctd\u003eVerify supply voltage, probe and extension-cable connections, and the manufacturer's fault-check procedure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent reading is stuck at one value\u003c\/td\u003e\n\u003ctd\u003eInput signal issue, incorrect wiring, or a problem with the probe or target\u003c\/td\u003e\n\u003ctd\u003eCheck the loop current, inspect connections, and compare the measurement with a verified mechanical reference where available.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAxial reading has a consistent offset\u003c\/td\u003e\n\u003ctd\u003eIncorrect zero setting, probe positioning, target reference, or channel scaling\u003c\/td\u003e\n\u003ctd\u003eReview the machine's reference position, probe installation, transmitter zero, and receiving-system range.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReading changes after maintenance\u003c\/td\u003e\n\u003ctd\u003eProbe position changed, wiring disturbed, or configuration altered\u003c\/td\u003e\n\u003ctd\u003eCompare pre- and post-maintenance records, inspect mounting and cable routing, and verify zero and span.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent signal is unstable\u003c\/td\u003e\n\u003ctd\u003eLoose connections, unstable supply, electrical interference, or mechanical movement\u003c\/td\u003e\n\u003ctd\u003eMeasure supply voltage under load, inspect terminals and shielding practices, and compare local measurements with the trend.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePLC\/DCS display disagrees with the measured loop current\u003c\/td\u003e\n\u003ctd\u003eIncorrect channel scaling, range direction, or engineering-unit conversion\u003c\/td\u003e\n\u003ctd\u003eVerify the 4–20 mA input configuration and confirm that the bidirectional 25-0-25 mil range is mapped correctly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eDiagnostic caution:\u003c\/strong\u003e The NOT OK output helps identify a qualifying abnormal measurement condition, but it does not guarantee detection of every possible mechanical, wiring, or control-system fault. Diagnose the complete measurement loop rather than relying on current output alone.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFor axial position monitoring, correct reference setup matters as much as the transmitter's electrical performance. A 25-0-25 mil range is centered around a reference point, so engineers must confirm the zero position and range direction before assigning alarm thresholds. A reversed or incorrectly scaled PLC\/DCS channel can make normal shaft movement appear abnormal—or hide a meaningful change.\u003c\/p\u003e\n\u003cp\u003eDuring a transmitter replacement, retain the original probe gap, cable identification, channel scaling, and calibration records where available. After installation, compare the displayed value against the transmitter loop current and the machine's documented reference position. If the reading changes after maintenance, investigate probe positioning and scaling before altering the span.\u003c\/p\u003e\n\u003cp\u003eFor turbine, compressor, and other critical rotating machinery, integrate the measurement into an engineered monitoring strategy. Confirm that alarm settings, trip logic, and any required independent protection functions follow the equipment manufacturer's and site's approved design.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: How can I tell whether a centered 25-0-25 mil range is configured correctly in my DCS?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eReview the channel's lower and upper engineering limits, zero reference, and signal direction. Confirm the mapping against the transmitter configuration and a known reference condition. Do not assume a standard 4–20 mA input automatically supports a centered range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: What should I compare when the new transmitter does not match the old unit's reading?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCompare the full ordering code, probe and extension-cable combination, probe position, zero and span settings, and receiving-channel scaling. Record loop current and displayed engineering units at the same operating condition to isolate the source of the discrepancy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Does the 5.0 m system-length option mean I can use any 5 m cable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. System length refers to the compatible probe and extension-cable arrangement specified by the manufacturer. Confirm cable type, probe model, and the approved combined system configuration instead of selecting a cable based only on physical length.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: How should I assess whether this model suits a marine or hazardous-area installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMatch the equipment marking and approval documents to the installation's actual classification and applicable requirements. Confirm the full model suffix, environmental conditions, mounting, wiring method, and any vessel or site-specific approval requirements before purchase.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: What information helps prevent ordering the wrong replacement transmitter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProvide the complete model number, required axial range, installed probe and extension-cable details, mounting arrangement, supply voltage, analog input configuration, and required approvals. If possible, include the existing transmitter's nameplate information and the receiving channel's configured range.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWarranty, Shipping, and Package Details\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Bently Nevada 991-25-50-01-05 thrust transmitter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12-month warranty, subject to the seller's applicable terms and conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping options:\u003c\/strong\u003e FedEx, UPS, and DHL, subject to destination and shipment arrangements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage contents:\u003c\/strong\u003e One transmitter. Probe, extension cable, and other accessories are included only when explicitly listed in the quotation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder verification:\u003c\/strong\u003e Provide the complete model and application details to help confirm configuration compatibility and availability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRequest a quotation from Global PLC Spare HUB\u003c\/strong\u003e for the \u003cstrong\u003e991-25-50-01-05\u003c\/strong\u003e. Share your probe-system details and required approval conditions so the configuration can be checked before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_524659a5-cbca-478a-b812-374d1b70ec8e.png?v=1784875246\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013885878454,"sku":"991-25-50-01-05","price":218.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_6_954fc031-f274-4a97-9145-39a21afce672.jpg?v=1792734099"},{"product_id":"990-05-70-02-05-bently-nevada-990-series-4-20-ma-vibration-monitor","title":"990-05-70-02-05 Bently Nevada 990 Series 4–20 mA Vibration Monitor","description":"\u003ch3\u003e\u003cb\u003eBently Nevada 990-05-70-02-05 | 990 Vibration Transmitter\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 990-05-70-02-05\u003c\/strong\u003e is a 2-wire vibration transmitter for machinery monitoring. It accepts one compatible 3300 NSv non-contacting proximity probe and extension cable. The transmitter converts vibration-related probe input into a 4–20 mA signal for compatible control and monitoring systems.\u003c\/p\u003e\n\u003cp\u003eThis configured unit provides a 0–5 mil peak-to-peak full-scale range, a 7.0 m system length option, bulkhead-screw mounting, and specified hazardous-area and maritime approvals. Confirm the complete configuration against the equipment nameplate and project requirements before ordering.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eConfiguration Breakdown | Read the Suffix\u003c\/b\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSuffix\u003c\/th\u003e\n\u003cth\u003eOption\u003c\/th\u003e\n\u003cth\u003eConfiguration meaning\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e05\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFull-scale range\u003c\/td\u003e\n\u003ctd\u003e0–5 mils peak-to-peak (0–125 μm peak-to-peak)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e70\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSystem length\u003c\/td\u003e\n\u003ctd\u003e7.0 m (23.0 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e02\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eBulkhead screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e05\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAgency approvals\u003c\/td\u003e\n\u003ctd\u003eCSA Division 2, ATEX Zone 0, ATEX Zone 2, and ABS maritime approval, as specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eModel code:\u003c\/strong\u003e 990 – 05 – 70 – 02 – 05\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrigin stated by supplier:\u003c\/strong\u003e Made in U.S.A.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eOperating Parameters\u003c\/b\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct family\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/990-991-and-177230-transmitter\"\u003e990 Vibration Transmitter\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e990-05-70-02-05\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe input\u003c\/td\u003e\n\u003ctd\u003eOne 3300 NSv non-contacting proximity probe and extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull-scale range\u003c\/td\u003e\n\u003ctd\u003e0–5 mils pp (0–125 μm pp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e4–20 mA DC, 2-wire configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop accuracy\u003c\/td\u003e\n\u003ctd\u003e±1.5% over specified full-scale range, subject to the stated test conditions and incremental scale factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply voltage\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 VDC at transmitter terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum loop resistance\u003c\/td\u003e\n\u003ctd\u003e1,000 Ω, including cable, at 35 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical current limiting\u003c\/td\u003e\n\u003ctd\u003e23 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response\u003c\/td\u003e\n\u003ctd\u003e5 Hz to 6,000 Hz, +0\/−3 dB as supplied\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe gap\u003c\/td\u003e\n\u003ctd\u003e0.5–1.75 mm (20–55 mils) from target for full-scale range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum target size\u003c\/td\u003e\n\u003ctd\u003e9.5 mm (0.375 in) diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZero and span\u003c\/td\u003e\n\u003ctd\u003eExternal, non-interacting adjustments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNOT OK signal defeat\u003c\/td\u003e\n\u003ctd\u003eOutput falls below 3.6 mA within 100 μs after a NOT OK condition; recovery is typically 2–3 seconds after the condition clears\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Proximitor sensor output cable distance\u003c\/td\u003e\n\u003ctd\u003e3 m (10 ft), to BNC connector, as specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter weight\u003c\/td\u003e\n\u003ctd\u003e0.43 kg (0.9 lbm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHazardous-area supply note\u003c\/td\u003e\n\u003ctd\u003eSource information specifies a 28 V power supply for nonhazardous, Zone 2, or Division 2 locations. Verify the installation requirements for the actual approval and site classification.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cb\u003eSignal Chain and Installation Checks\u003c\/b\u003e\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe and extension:\u003c\/strong\u003e Use a compatible 3300 NSv probe and extension cable. Confirm the specified system length and connector arrangement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical gap:\u003c\/strong\u003e Set the probe gap within 0.5–1.75 mm (20–55 mils) when the full-scale range is required. Check the target diameter and surface condition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop supply:\u003c\/strong\u003e Provide +12 to +35 VDC at the transmitter terminals. Include cable and receiver resistance when checking the 1,000 Ω loop limit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal receiver:\u003c\/strong\u003e Verify that the PLC analog input, DCS input, or machinery monitor accepts a 2-wire 4–20 mA signal and is configured for the correct engineering range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero and span:\u003c\/strong\u003e Adjust the external controls using the approved calibration procedure and the correct test setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArea approval:\u003c\/strong\u003e Confirm that the transmitter’s approval markings match the hazardous-area classification, installation method, and governing site requirements.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003e\u003cb\u003eEquipment Fit and Application Areas\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eThe 990 transmitter is suited to machinery installations where a compatible proximity probe measures shaft vibration and a current signal must be transmitted to a monitoring or control system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotating machinery:\u003c\/strong\u003e Pumps, fans, compressors, and other machines with compatible shaft-proximity measurement points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePLC and DCS monitoring:\u003c\/strong\u003e Provides a 4–20 mA vibration-related signal to compatible analog input channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProcess and utility equipment:\u003c\/strong\u003e Supports vibration trending and alarm strategies when integrated with the site’s monitoring logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine installations:\u003c\/strong\u003e The specified ABS maritime approval may support applicable shipboard projects; confirm approval scope and installation conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHazardous locations:\u003c\/strong\u003e Use only where the exact approval, wiring method, and installation requirements have been verified.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt is not a stand-alone vibration analysis system. Confirm whether the application requires additional machinery protection functions, dynamic waveform data, or system-level alarm logic.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eDiagnostic Behavior and Field Troubleshooting\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eThe transmitter’s NOT OK signal behavior provides a useful indication of an invalid or unacceptable measurement condition. When NOT OK occurs, the output is specified to fall below 3.6 mA within 100 μs. It typically returns after the condition clears, with a 2–3 second recovery interval.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSymptom\u003c\/th\u003e\n\u003cth\u003eEngineering checks\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop current below 3.6 mA\u003c\/td\u003e\n\u003ctd\u003eCheck transmitter NOT OK status, probe connection, extension cable, supply voltage, and loop wiring.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent remains near a fixed value\u003c\/td\u003e\n\u003ctd\u003eCheck probe gap, target condition, loop continuity, and whether the receiver is correctly scaled.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReading differs from expected vibration\u003c\/td\u003e\n\u003ctd\u003eVerify the full-scale option, probe compatibility, gap setting, receiver range, and calibration procedure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntermittent measurement\u003c\/td\u003e\n\u003ctd\u003eInspect connectors, cable routing, mechanical mounting, and the stability of the DC supply.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUnexpected loop loading\u003c\/td\u003e\n\u003ctd\u003eCalculate the total loop resistance, including input impedance and cable resistance, against the permitted limit at the actual supply voltage.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eUse the equipment manual and site diagnostic procedures to determine the cause of a NOT OK condition. A low loop current indicates a measurement or loop fault state; it does not, by itself, identify the failed component.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eGlobal PLC Spare HUB Review\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eFor replacement selection, match the complete 990 suffix—not only the 990 family name. The full-scale option determines the intended measurement range, while system length and mounting affect the physical installation. Approval codes are especially important for hazardous-area and marine projects.\u003c\/p\u003e\n\u003cp\u003eBefore commissioning, check the probe gap, supply voltage, loop resistance, receiver scaling, and output response. A controlled loop test helps distinguish transmitter configuration issues from probe, wiring, or receiving-channel faults.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eSupply, Warranty, and Shipping\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Bently Nevada 990-05-70-02-05 vibration transmitter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 months\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping carriers:\u003c\/strong\u003e FedEx, UPS, and DHL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispatch estimate:\u003c\/strong\u003e Typically 24–48 hours after order processing, subject to stock and order confirmation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder verification:\u003c\/strong\u003e Share the complete part number and application area so the configuration and approval requirements can be checked.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eFrequently Asked Questions\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What information should I provide when requesting a replacement quote?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProvide the complete model number, nameplate details, required quantity, installation area classification, and whether the existing probe and extension cable will also be replaced. These details help verify configuration suitability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: How can I confirm that the 7.0 m system-length option suits my installed probe assembly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCheck the installed probe and extension cable part numbers and their combined system length against the equipment documentation. Do not assume the transmitter’s length suffix alone confirms every cable component in the field.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What should I check if a PLC displays a vibration value that does not match the transmitter’s range?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCompare the PLC channel scaling with the transmitter’s 0–5 mil pp full-scale option. Then verify the loop current at known test points and review the receiver’s engineering-unit conversion.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Is the listed agency approval sufficient for every hazardous-area installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Confirm the exact approval marking, jurisdiction, zone or division, installation method, and any associated system requirements. The project’s safety or hazardous-area engineer should approve the final installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: Should I replace the probe and transmitter together when troubleshooting a low-current fault?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNot automatically. First inspect loop power, wiring, connectors, probe gap, and NOT OK status. If the fault remains, use the approved test procedure to isolate the probe, cable, transmitter, and receiving input before selecting replacement parts.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures_8ba4a14f-832f-4772-a484-c09fd48b12f9.png?v=1784875470\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013924380854,"sku":"990-05-70-02-05","price":118.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_6_26470a41-5a13-4d0b-a17a-3b9c9ddae77d.jpg?v=1792733844"},{"product_id":"990-10-50-03-01-bently-nevada-990-vibration-transmitter","title":"990-10-50-03-01 Bently Nevada 990 Vibration Transmitter","description":"\u003ch3\u003e\u003cstrong\u003eBently Nevada 990-10-50-03-01 | 990 Vibration Transmitter\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #2e74b5;\"\u003eBently Nevada 990-10-50-03-01\u003c\/span\u003e\u003c\/strong\u003e is a two-wire vibration transmitter designed to interface with one compatible \u003cstrong\u003e3300 NSv proximity probe\u003c\/strong\u003e and its extension cable. It converts the probe measurement into a 4–20 mA DC signal for PLC, DCS, and machinery monitoring systems.\u003c\/p\u003e\n\u003cp\u003eThis configuration provides a full-scale range of \u003cstrong\u003e0–10 mils peak-to-peak (0–250 μm peak-to-peak)\u003c\/strong\u003e, a 5.0 m system length, DIN mounting clips and screws, and CSA Division 2 approval. Its NOT OK signal-defeat function drives the output below 3.6 mA when a qualifying transmitter or probe system fault occurs.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e01 | Configuration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eUse the complete ordering code to distinguish the measuring range, probe-system length, mounting hardware, and approval configuration.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eCode Segment\u003c\/th\u003e\n\u003cth\u003eSelection\u003c\/th\u003e\n\u003cth\u003eConfiguration Meaning\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e990\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e990 series\u003c\/td\u003e\n\u003ctd\u003eVibration transmitter platform\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e10\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFull-scale option\u003c\/td\u003e\n\u003ctd\u003e0–10 mils pp (0–250 μm pp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e50\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSystem length option\u003c\/td\u003e\n\u003ctd\u003e5.0 m (16.4 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e03\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMounting option\u003c\/td\u003e\n\u003ctd\u003eDIN clips and screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e01\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAgency approval option\u003c\/td\u003e\n\u003ctd\u003eCSA Division 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eComplete model:\u003c\/strong\u003e 990 + 10 + 50 + 03 + 01 = \u003cstrong\u003e990-10-50-03-01\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eConfirm the ordering-code interpretation against the applicable manufacturer documentation before substituting another full-scale range, system length, mounting option, or approval variant.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e02 | Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Number\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e990-10-50-03-01\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/990-991-and-177230-transmitter\"\u003e990 Vibration Transmitter\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Input\u003c\/td\u003e\n\u003ctd\u003eOne non-contacting 3300 NSv proximity probe and extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull-Scale Range\u003c\/td\u003e\n\u003ctd\u003e0–10 mils peak-to-peak (0–250 μm peak-to-peak)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Length Option\u003c\/td\u003e\n\u003ctd\u003e5.0 m (16.4 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 V DC at the transmitter terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4–20 mA DC, two-wire configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop Accuracy\u003c\/td\u003e\n\u003ctd\u003eWithin ±1.5% of specified full-scale range under stated test conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1,000 Ω including cable at 35 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Current Limiting\u003c\/td\u003e\n\u003ctd\u003e23 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZero and Span\u003c\/td\u003e\n\u003ctd\u003eNon-interacting external adjustments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e5 Hz to 6,000 Hz, +0\/−3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Gap\u003c\/td\u003e\n\u003ctd\u003e0.5–1.75 mm (20–55 mils) from target\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Target Size\u003c\/td\u003e\n\u003ctd\u003e9.5 mm (0.375 in) diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProximitor Sensor Output Cable\u003c\/td\u003e\n\u003ctd\u003eMaximum cable distance of 3 m (10 ft) at the BNC connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNOT OK Response\u003c\/td\u003e\n\u003ctd\u003eOutput falls below 3.6 mA within 100 μs after a NOT OK condition occurs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Recovery\u003c\/td\u003e\n\u003ctd\u003eTypically restored within 2–3 seconds after the NOT OK condition clears\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eDIN clips and screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApproval Option\u003c\/td\u003e\n\u003ctd\u003eCSA Division 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecified Hazardous-Area Context\u003c\/td\u003e\n\u003ctd\u003eNonhazardous, Zone 2, or Division 2 locations, subject to applicable approvals and installation requirements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Note\u003c\/td\u003e\n\u003ctd\u003e28 V power supply specified for the stated hazardous-area application context; verify the approved installation design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Weight\u003c\/td\u003e\n\u003ctd\u003e0.43 kg (0.9 lbm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry Information\u003c\/td\u003e\n\u003ctd\u003eSupplied description states Made in U.S.A.; verify marking on the actual unit when required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eAccuracy note:\u003c\/strong\u003e The stated ±1.5% loop accuracy applies from the TEST signal input to the voltage measured across a 250 Ω loop resistance. This error is additional to the Prox Out incremental scale factor. Do not interpret it as total installed-system accuracy without considering the probe, cable, target, and receiving instrument.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e03 | Signal Path and System Integration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe transmitter forms part of a non-contacting displacement measurement chain. Correct performance depends on the complete probe, extension cable, target, power supply, and receiving input.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensing:\u003c\/strong\u003e The compatible 3300 NSv proximity probe measures shaft or target displacement without physical contact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal conversion:\u003c\/strong\u003e The transmitter converts the measurement into a two-wire 4–20 mA signal over its configured full-scale range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl-system interface:\u003c\/strong\u003e A compatible PLC, DCS, or monitoring input receives the current signal for display, trending, and alarm logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFault indication:\u003c\/strong\u003e When a NOT OK condition occurs, the transmitter drives the output below 3.6 mA within the specified response time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop design:\u003c\/strong\u003e The power supply must provide sufficient voltage for the transmitter and the total loop resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor a 4–20 mA input, 4 mA generally represents the configured lower measurement limit and 20 mA represents full scale. Confirm the receiving channel's scaling and fault-current interpretation during commissioning.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e04 | Suitable Equipment and Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotating machinery:\u003c\/strong\u003e Integrate compatible shaft-displacement measurements into monitoring systems for pumps, compressors, and other rotating equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial process skids:\u003c\/strong\u003e Send vibration-related displacement data to PLC or DCS analog inputs for operator monitoring and process response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachinery condition monitoring:\u003c\/strong\u003e Trend shaft movement over time to help identify changes that warrant further inspection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlant control and alarm systems:\u003c\/strong\u003e Use the 4–20 mA signal as an input to correctly engineered display, alarm, and supervisory logic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance and retrofit projects:\u003c\/strong\u003e Replace a matching transmitter where the existing probe system, measurement range, wiring, and mounting arrangement are compatible.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe transmitter provides a displacement-related signal, not a universal vibration velocity or acceleration measurement. Verify the required measurement type and signal scaling before using it in a machinery protection design.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e05 | Installation and Commissioning Procedure\u003c\/strong\u003e\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify the part number:\u003c\/strong\u003e Check that the transmitter is 990-10-50-03-01 and that its full-scale, system-length, mounting, and approval options match the application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the probe system:\u003c\/strong\u003e Confirm compatibility with the 3300 NSv proximity probe and extension cable. Verify the total system length against the approved system documentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet the probe gap:\u003c\/strong\u003e Position the probe within the specified 0.5–1.75 mm gap range. Use the manufacturer's setup procedure and appropriate measurement tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValidate the target:\u003c\/strong\u003e Confirm that the target diameter meets the 9.5 mm minimum and that target material and surface conditions suit the sensing system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck loop power:\u003c\/strong\u003e Supply +12 to +35 V DC at the transmitter terminals. Calculate the total loop resistance, including wiring and receiving-input resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify the receiving channel:\u003c\/strong\u003e Configure the PLC or DCS input for 4–20 mA and enter the correct engineering-unit scaling for the 0–10 mils pp range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest the complete loop:\u003c\/strong\u003e Use an approved test procedure to verify the current output, displayed value, fault response, and recovery behavior.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecord baseline readings:\u003c\/strong\u003e Document the probe gap, loop voltage, loop resistance, zero and span settings, and receiving-channel readings for future maintenance.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eFor installations in hazardous areas, follow the exact approval conditions, site electrical procedures, and manufacturer instructions. The stated 28 V supply context does not replace verification of the complete installation's suitability.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e06 | Diagnostic Guidance for Field Engineers\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSymptom\u003c\/th\u003e\n\u003cth\u003ePossible Cause\u003c\/th\u003e\n\u003cth\u003eRecommended Diagnostic Action\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop current is below 3.6 mA\u003c\/td\u003e\n\u003ctd\u003eNOT OK condition, probe or cable problem, or loss of valid measurement\u003c\/td\u003e\n\u003ctd\u003eCheck transmitter supply, probe connections, extension cable, gap, and the manufacturer's NOT OK diagnostic procedure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop current remains near zero\u003c\/td\u003e\n\u003ctd\u003eOpen loop, missing supply, incorrect polarity, or wiring fault\u003c\/td\u003e\n\u003ctd\u003eMeasure DC voltage at the transmitter terminals and inspect loop continuity and polarity.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReading is consistently offset\u003c\/td\u003e\n\u003ctd\u003eIncorrect probe gap, zero setting, target geometry, or receiving-channel scaling\u003c\/td\u003e\n\u003ctd\u003eRecheck the physical gap, zero adjustment, target dimensions, and PLC\/DCS range configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReading fluctuates unexpectedly\u003c\/td\u003e\n\u003ctd\u003eLoose connections, electrical interference, mechanical movement, or unstable target conditions\u003c\/td\u003e\n\u003ctd\u003eInspect the wiring and mounting, compare local measurements with the control-system trend, and review machine operating conditions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal does not reach 20 mA at expected full scale\u003c\/td\u003e\n\u003ctd\u003eIncorrect span, incompatible probe-system configuration, insufficient loop voltage, or scaling mismatch\u003c\/td\u003e\n\u003ctd\u003eVerify the transmitter range, probe and cable compatibility, loop voltage under load, and receiving-channel configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal does not recover promptly after a fault\u003c\/td\u003e\n\u003ctd\u003eThe NOT OK condition remains, or the probe\/cable fault persists\u003c\/td\u003e\n\u003ctd\u003eConfirm the fault has cleared and allow the specified 2–3 second recovery interval before investigating further.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The NOT OK output is a fault-indication behavior, not proof that every possible probe, cable, transmitter, or wiring fault will be detected. Follow the manufacturer's diagnostic procedure and validate the full measurement chain.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e07 | Global PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFor the \u003cstrong\u003e990-10-50-03-01\u003c\/strong\u003e, three checks deserve priority during replacement and commissioning: probe-system compatibility, mechanical gap, and current-loop headroom. A transmitter may receive power and produce a plausible current even when the receiving channel uses the wrong engineering range. That error can distort alarm thresholds and historical trends.\u003c\/p\u003e\n\u003cp\u003eEngineers should calculate the total loop resistance at the actual supply voltage rather than relying only on the 1,000 Ω maximum stated at 35 V DC. Cable resistance, input resistance, and other series devices all consume available voltage. Confirm the required transmitter terminal voltage under the worst-case loop load.\u003c\/p\u003e\n\u003cp\u003eWhen a NOT OK signal appears, investigate the probe and extension cable before changing zero or span. Adjustments cannot correct a defective connection or an incompatible sensor system. After maintenance, compare the transmitter output with the receiving system and record the baseline for future trend analysis.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e08 | Frequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: How do I determine whether the 5.0 m system-length option matches my installed probe assembly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIdentify the installed 3300 NSv probe and extension cable part numbers, then compare their approved combined system length with the transmitter configuration. Do not assume that physical cable length alone establishes electrical compatibility.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: What should I consider when connecting this transmitter to a PLC analog input?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm that the input supports two-wire 4–20 mA loops, check the input resistance, and verify the supply voltage remaining at the transmitter. Configure the engineering range for 0–10 mils pp or 0–250 μm pp as required, and confirm how the PLC handles currents below 3.6 mA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Can I use this model to measure vibration velocity directly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis model is specified for a 3300 NSv proximity probe and a displacement full-scale range. It does not directly provide a velocity measurement based on the supplied specifications. Select a suitable sensing and signal-conditioning system if the application requires velocity or acceleration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Why should the loop be tested at the receiving input as well as at the transmitter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe transmitter's output accuracy does not include every error introduced by field wiring, input resistance, channel configuration, or control-system scaling. Checking both ends helps identify wiring drops, incorrect input settings, and discrepancies between measured current and displayed engineering units.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: What information should I provide when requesting a replacement quotation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProvide the full transmitter part number, installed probe and extension-cable models, required measurement range, loop supply voltage, receiving-input type, mounting requirements, and hazardous-area classification. These details help verify configuration compatibility and reduce the risk of ordering a transmitter with the wrong options.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e09 | Warranty, Shipping, and Package Details\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Bently Nevada 990-10-50-03-01 vibration transmitter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12-month warranty, subject to the seller's applicable terms and conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping methods:\u003c\/strong\u003e FedEx, UPS, and DHL, subject to destination and shipment arrangements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage contents:\u003c\/strong\u003e One 990-10-50-03-01 transmitter. Probe, extension cable, and additional accessories are included only when explicitly listed in the quotation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrdering support:\u003c\/strong\u003e Provide the full part number and existing system details to help confirm compatibility and availability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eRequest a quotation from Global PLC Spare HUB\u003c\/strong\u003e for the \u003cstrong\u003eBently Nevada 990-10-50-03-01\u003c\/strong\u003e. Our team can review your application details to help verify the required configuration before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures_8ba4a14f-832f-4772-a484-c09fd48b12f9.png?v=1784875470\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013924446390,"sku":"990-10-50-03-01","price":106.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_2_909c33ab-170e-4915-ab06-911d600cec81.jpg?v=1792733812"},{"product_id":"990-10-70-03-cn-bently-nevada-vibration-transmitter-4-20ma","title":"990-10-70-03-CN Bently Nevada Vibration Transmitter 4-20mA","description":"\u003ch3\u003e\u003cstrong\u003e\u003cspan style=\"color: #b22222;\"\u003e990-10-70-03-CN\u003c\/span\u003e Bently Nevada 990 Vibration Transmitter\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"color: #b22222;\"\u003e\u003cstrong\u003e990-10-70-03-CN\u003c\/strong\u003e\u003c\/span\u003e belongs to the trusted \u003cstrong\u003e990 Series\u003c\/strong\u003e vibration monitoring platform from Bently Nevada.\u003c\/p\u003e\n\u003cp\u003eThis transmitter converts shaft vibration signals into stable 4–20 mA process outputs. It supports continuous machinery protection in demanding industrial environments.\u003c\/p\u003e\n\u003cp\u003eThe unit integrates directly with \u003cstrong\u003e3300 NSv proximity probes\u003c\/strong\u003e. It simplifies vibration monitoring for rotating equipment and process control systems.\u003c\/p\u003e\n\u003cp\u003eEngineers frequently deploy this transmitter in turbine skids, compressor packages, and critical pump systems.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"color: #b22222;\"\u003e\u003cstrong\u003e990 Series vibration transmitters\u003c\/strong\u003e\u003c\/span\u003e focus on practical field deployment and long-term signal stability.\u003c\/p\u003e\n\u003cp\u003eUnlike traditional rack-based monitoring systems, this transmitter delivers direct loop-powered integration with PLC, DCS, and SCADA platforms.\u003c\/p\u003e\n\u003cp\u003eIts fast NOT OK response protects machinery during probe failure conditions. This capability improves maintenance visibility and operational reliability.\u003c\/p\u003e\n\u003cp\u003eThe compact DIN mounting structure also reduces installation complexity inside crowded industrial cabinets.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRecommended Equipment Integration\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSteam turbine monitoring systems\u003c\/li\u003e\n\u003cli\u003eCentrifugal compressor trains\u003c\/li\u003e\n\u003cli\u003eIndustrial process pumps\u003c\/li\u003e\n\u003cli\u003eAPI rotating machinery packages\u003c\/li\u003e\n\u003cli\u003eBoiler feedwater systems\u003c\/li\u003e\n\u003cli\u003eHigh-speed motor assemblies\u003c\/li\u003e\n\u003cli\u003eFan and blower protection systems\u003c\/li\u003e\n\u003cli\u003eOEM vibration monitoring skids\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCore Diagnostic Functions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eContinuous shaft vibration monitoring\u003c\/li\u003e\n\u003cli\u003eRotor imbalance detection\u003c\/li\u003e\n\u003cli\u003eBearing degradation indication\u003c\/li\u003e\n\u003cli\u003eMechanical looseness identification\u003c\/li\u003e\n\u003cli\u003eMisalignment trend analysis\u003c\/li\u003e\n\u003cli\u003eEarly-stage vibration fault warning\u003c\/li\u003e\n\u003cli\u003eProcess alarm integration through 4–20 mA output\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eConfiguration Structure\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #b22222;\"\u003e990\u003c\/span\u003e\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e990 Series vibration transmitter platform\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #b22222;\"\u003e10\u003c\/span\u003e\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eFull-scale range:\n\u003cul\u003e\n\u003cli\u003e0–10 mils peak-to-peak\u003c\/li\u003e\n\u003cli\u003e0–250 μm peak-to-peak\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #b22222;\"\u003e70\u003c\/span\u003e\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eSystem length:\n\u003cul\u003e\n\u003cli\u003e7.0 meters\u003c\/li\u003e\n\u003cli\u003e23.0 feet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #b22222;\"\u003e03\u003c\/span\u003e\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eMechanical mounting package:\n\u003cul\u003e\n\u003cli\u003eDIN clips included\u003c\/li\u003e\n\u003cli\u003eMounting screws included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #b22222;\"\u003eCN\u003c\/span\u003e\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eCountry-specific agency approvals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eEngineering Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Bently Nevada\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cspan style=\"color: #b22222;\"\u003e\u003cstrong\u003e990-10-70-03-CN\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 990 Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Vibration Transmitter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in U.S.A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Compatibility:\u003c\/strong\u003e 1 non-contacting 3300 NSv probe system\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Output:\u003c\/strong\u003e 4–20 mAdc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Configuration:\u003c\/strong\u003e 2-wire loop-powered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Accuracy:\u003c\/strong\u003e ±1.5% full scale\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Power:\u003c\/strong\u003e +12 to +35 Vdc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Loop Resistance:\u003c\/strong\u003e 1000 Ω at 35 Vdc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 5 Hz to 6000 Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Limiting:\u003c\/strong\u003e 23 mA typical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Gap Range:\u003c\/strong\u003e 0.5 to 1.75 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Target Diameter:\u003c\/strong\u003e 9.5 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Recovery Time:\u003c\/strong\u003e 2–3 seconds after NOT OK reset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFault Response Time:\u003c\/strong\u003e Less than 100 μs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeadwire Distance:\u003c\/strong\u003e Maximum 3 meters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Method:\u003c\/strong\u003e DIN rail clips and screws\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHazardous Area Support:\u003c\/strong\u003e Zone 2 and Div 2 locations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical Supply Voltage:\u003c\/strong\u003e 28 Vdc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApproximate Weight:\u003c\/strong\u003e 0.43 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSignal Processing Advantages\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStable analog transmission over long cable distances\u003c\/li\u003e\n\u003cli\u003eFast fault reaction improves machinery protection\u003c\/li\u003e\n\u003cli\u003eExternal zero and span adjustments simplify calibration\u003c\/li\u003e\n\u003cli\u003eStrong anti-noise capability in industrial environments\u003c\/li\u003e\n\u003cli\u003eSuitable for direct PLC analog input integration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eField Installation Recommendations\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaintain correct probe gap before startup\u003c\/li\u003e\n\u003cli\u003eUse shielded routing near high-voltage cables\u003c\/li\u003e\n\u003cli\u003eVerify loop resistance during commissioning\u003c\/li\u003e\n\u003cli\u003eInstall DIN clips securely inside control cabinets\u003c\/li\u003e\n\u003cli\u003eConfirm target diameter meets minimum specification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eIndustrial Communication Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDistributed Control Systems (DCS)\u003c\/li\u003e\n\u003cli\u003eProgrammable Logic Controllers (PLC)\u003c\/li\u003e\n\u003cli\u003eSCADA monitoring architectures\u003c\/li\u003e\n\u003cli\u003eCondition monitoring platforms\u003c\/li\u003e\n\u003cli\u003ePlant asset management systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eShipping and Supply Support\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e24–48 hour dispatch available\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eInternational export packaging provided\u003c\/li\u003e\n\u003cli\u003eCourier services:\n\u003cul\u003e\n\u003cli\u003eFedEx\u003c\/li\u003e\n\u003cli\u003eUPS\u003c\/li\u003e\n\u003cli\u003eDHL\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eWarranty Information\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e12-month warranty coverage\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eTechnical support during warranty period\u003c\/li\u003e\n\u003cli\u003eFactory-standard inspection before shipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eProfessional FAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhy does the transmitter output remain below 4 mA?\u003c\/strong\u003e\n\u003cp\u003eThe system may detect a NOT OK condition from the probe circuit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow should engineers choose the correct full-scale range?\u003c\/strong\u003e\n\u003cp\u003eSelect the range according to expected shaft vibration amplitude during normal operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat installation issue commonly causes unstable readings?\u003c\/strong\u003e\n\u003cp\u003eIncorrect probe gap settings frequently create fluctuating vibration outputs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan this transmitter connect directly to a PLC analog input card?\u003c\/strong\u003e\n\u003cp\u003eYes. The 4–20 mA output supports most industrial analog input modules.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat benefits does DIN mounting provide in field applications?\u003c\/strong\u003e\n\u003cp\u003eDIN installation reduces panel space usage and speeds cabinet maintenance work.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures.png?v=1775026312\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013924479158,"sku":"990-10-70-03-CN","price":106.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_6.jpg?v=1778221702"},{"product_id":"990-08-50-02-01-bently-nevada-990-vibration-transmitter-990-series","title":"990-08-50-02-01 Bently Nevada 990 Vibration Transmitter 990 Series","description":"\u003ch3\u003eEngineering Architecture \u0026amp; Configuration Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #0056b3;\"\u003e990-08-50-02-01\u003c\/strong\u003e unit manufactured by \u003cstrong style=\"color: #0056b3;\"\u003eBently Nevada\u003c\/strong\u003e represents an advanced \u003cstrong style=\"color: #0056b3;\"\u003e990 Vibration Transmitter\u003c\/strong\u003e from the trusted \u003cstrong style=\"color: #0056b3;\"\u003e990 Series\u003c\/strong\u003e. This loop-powered transmitter processes signals directly from a non-contacting probe to deliver a proportional 4-20 mA output for PLC or DCS integration.\u003c\/p\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Series:\u003c\/strong\u003e \u003cstrong style=\"color: #0056b3;\"\u003e990\u003c\/strong\u003e – Compact Machinery Vibration Transmitter Platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-Scale Range Option (-08):\u003c\/strong\u003e 0-8 mils pp (0-200 μm pp) peak-to-peak displacement span\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Length Option (-50):\u003c\/strong\u003e 5.0 meters (16.4 feet) total calibrated electrical length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Option (-02):\u003c\/strong\u003e Rugged bulkhead screws for secure surface or panel fastening\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgency Approval Option (-01):\u003c\/strong\u003e CSA Division 2 hazardous area classification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eElectrical \u0026amp; Performance Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; text-align: left;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003ePerformance Parameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eTechnical Standard\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eSignal Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eAccepts 1 non-contacting 3300 NSv Proximity Probe and matching extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eLoop Power Requirements\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e+12 to +35 Vdc input applied directly at transmitter terminal blocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eCurrent Output \u0026amp; Loop Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e4 to 20 mAdc 2-wire format; Within ±1.5% accuracy across full-scale range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eRecommended Probe Gap\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e0.5 to 1.75 mm (20 to 55 mils) relative linear target gap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eLoop Resistance \u0026amp; Limiting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eMaximum 1,000 Ω loop resistance at 35 Vdc; 23 mA typical current limiting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eFrequency Response Band\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e5 Hz to 6,000 Hz (+0, -3 dB) signal tracking bandwidth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003eFault Status Response (NOT OK)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eDrops below 3.6 mA within 100 µs on sensor fault; recovers in 2-3 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003e\u003cstrong\u003ePhysical Dimensions \u0026amp; Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 8px; border: 1px solid #ddd;\"\u003eBulkhead mount profile; Unit weight approximately 0.43 kg (0.9 lbm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIndustrial Applications \u0026amp; Rotary Machinery\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Industrial Turbines:\u003c\/strong\u003e Monitors shaft vibration on smaller steam turbines where rack space is restricted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentrifugal Pumps \u0026amp; Blowers:\u003c\/strong\u003e Tracks radial vibration parameters on continuous-duty balance machinery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGearboxes \u0026amp; Industrial Compressors:\u003c\/strong\u003e Measures high-frequency mechanical displacement in harsh plant skids.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic Capabilities \u0026amp; Signal Processing\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect PLC Integration:\u003c\/strong\u003e Feeds real-time 4-20 mA vibration loops straight into distributed control systems without bulky monitor racks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-In Diagnostic BNC Output:\u003c\/strong\u003e Provides local Proximitor sensor output port supporting up to 3 meters (10 feet) of auxiliary cable connection for portable analyzers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Interacting Calibration:\u003c\/strong\u003e Allows quick zero and span tuning adjustments during scheduled maintenance windows.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cp\u003eFor plant operators looking to streamline vibration monitoring without investing in a full 3500 rack infrastructure, the \u003cstrong style=\"color: #0056b3;\"\u003e990-08-50-02-01\u003c\/strong\u003e offers a robust, self-contained solution. When installing this transmitter in Division 2 hazardous locations, field technicians must verify that total loop resistance—including field wiring—does not exceed 1,000 ohms at 35 Vdc. Maintaining the probe gap strictly between 20 and 55 mils ensures the linear output voltage matches the 0-8 mils pp full-scale span without signal clipping. Additionally, utilizing the front BNC connection during routine walkarounds lets maintenance crews capture raw dynamic waveforms instantly.\u003c\/p\u003e\n\u003ch3\u003eLogistics, Packaging \u0026amp; Warranty Terms\u003c\/h3\u003e\n\u003cul style=\"list-style-type: none; padding-left: 0;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition Status:\u003c\/strong\u003e 100% New \u0026amp; Original factory sealed inventory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory Warranty:\u003c\/strong\u003e Complete 12 Months warranty coverage included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispatch Lead Time:\u003c\/strong\u003e Rapid 24 to 48 hour order handling and dispatch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpress Global Shipping:\u003c\/strong\u003e Fast door-to-door delivery via FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch3\u003eHow does the transmitter signal a sensor fault or NOT OK condition?\u003c\/h3\u003e\n\u003cp\u003eThe signal output drops below 3.6 mA within 100 microseconds whenever an open circuit or transducer fault occurs, and automatically restores normal output within 2 to 3 seconds after fault removal.\u003c\/p\u003e\n\u003ch3\u003eWhat target size is required to achieve accurate displacement readings?\u003c\/h3\u003e\n\u003cp\u003eThe monitored shaft or target must have a minimum diameter of 9.5 mm (0.375 inches) to ensure proper eddy current field formation and linear accuracy.\u003c\/p\u003e\n\u003ch3\u003eCan I connect a portable diagnostic recorder directly to this transmitter?\u003c\/h3\u003e\n\u003cp\u003eYes, the unit features a built-in BNC connector for the Proximitor Sensor output, allowing connection of diagnostic test gear up to 3 meters (10 feet) away.\u003c\/p\u003e\n\u003ch3\u003eWhat selection factors guide the choice of the -08 full-scale option?\u003c\/h3\u003e\n\u003cp\u003eChoose option -08 when your machinery vibration monitoring profile requires a specific 0 to 8 mils peak-to-peak (0 to 200 micrometers pp) measurement ceiling.\u003c\/p\u003e\n\u003ch3\u003eWhy is bulkhead mounting preferred for the -02 hardware configuration?\u003c\/h3\u003e\n\u003cp\u003eBulkhead mounting options provide a secure, vibration-resistant mechanical anchorage directly onto control panel backplanes or enclosure walls, minimizing secondary mechanical resonance.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures_8ba4a14f-832f-4772-a484-c09fd48b12f9.png?v=1784875470\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013934244022,"sku":"990-08-50-02-01","price":203.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_6_a090bd7f-1f53-46cf-b49e-53cdb3a3845d.jpg?v=1793165772"},{"product_id":"990-08-70-03-01-bently-nevada-990-vibration-transmitter","title":"990-08-70-03-01 Bently Nevada 990 Vibration Transmitter","description":"\u003ch3\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e990-08-70-03-01\u003c\/strong\u003e is an advanced 2-wire vibration transmitter manufactured by \u003cstrong\u003eBently Nevada\u003c\/strong\u003e within the \u003cstrong\u003e990 Vibration Transmitter\u003c\/strong\u003e series. Designed to interface directly with a 3300 NSv proximity probe and extension cable, this compact unit converts raw displacement signals into a proportional 4 to 20 mA DC output loop. It provides an economical, rackless solution for continuous shaft vibration monitoring in balance-of-plant machinery, featuring non-interacting zero\/span adjustments and built-in \"NOT OK\" signal defeat diagnostics.\u003c\/p\u003e\n\u003ch3\u003ePart Number \u0026amp; Configuration Breakdown (990-AA-BB-CC-DD)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Model (990):\u003c\/strong\u003e 990 Vibration Transmitter Platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOption A (-08):\u003c\/strong\u003e Full-scale Option — 0 to 8 mils pp (0 to 200 μm pp) vibration range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOption B (-70):\u003c\/strong\u003e System Length Option — 7.0 meters (23.0 feet) total matched electrical length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOption C (-03):\u003c\/strong\u003e Mounting Option — DIN clips and screws for secure panel or rail mounting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOption D (-01):\u003c\/strong\u003e Agency Approval Option — CSA Division 2 hazardous area classification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e \u003cstrong\u003eBently Nevada\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e \u003cstrong\u003e990 Vibration Transmitter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e New \u0026amp; Original in Factory Packing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications Matrix\u003c\/h3\u003e\n\u003ch4\u003e1. Input, Power \u0026amp; Loop Parameters\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Signal:\u003c\/strong\u003e Accepts 1 non-contacting 3300 NSv Proximity Probe and matching extension cable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Power:\u003c\/strong\u003e Requires +12 to +35 V DC input at transmitter terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Output:\u003c\/strong\u003e 4 to 20 mAdc over specified full-scale range in 2-wire configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Accuracy:\u003c\/strong\u003e Within ± 1.5% over specified full-scale range (measured across a 250 Ω loop resistance)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Loop Resistance:\u003c\/strong\u003e 1,000 Ω including cable at 35 V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Limiting:\u003c\/strong\u003e 23 mA typical clamp protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e2. Metrology \u0026amp; Operating Parameters\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Gap Window:\u003c\/strong\u003e Probe must be gapped between 0.5 and 1.75 mm (20 and 55 mils) from the target to guarantee full-scale linear output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 5 Hz to 6,000 Hz (+0, -3 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Target Diameter:\u003c\/strong\u003e 9.5 mm (0.375 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmitter Net Weight:\u003c\/strong\u003e 0.43 kg (0.9 lbm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e3. Diagnostic \u0026amp; Safety Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNOT OK Signal Defeat:\u003c\/strong\u003e Output drops to \u0026lt; 3.6 mA within 100 μs upon detecting a sensor fault; normal signal restores within 2 to 3 seconds after fault clearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero and Span:\u003c\/strong\u003e Non-interacting external potentiometers for precise calibration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHazardous Ratings:\u003c\/strong\u003e CSA Division 2 \/ Zone 2 certification with power supply limit of 28 V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eModel Comparison \u0026amp; Technical Selection Guide\u003c\/h3\u003e\n\u003cp\u003eWhen scaling monitoring loops for balance-of-plant machinery, selecting the correct full-scale range and system length ensures optimal loop sensitivity. Compare with the alternative variant \u003ca href=\"https:\/\/www.plcsparehub.com\/products\/990-04-50-02-05-990-vibration-transmitter-bently-nevada-module\"\u003e\u003cstrong\u003e990-04-50-02-05\u003c\/strong\u003e\u003c\/a\u003e, which features a tighter 0 to 4 mils pp (0 to 100 μm pp) full-scale range (-04), a shorter 5.0 meter system length (-50), panel mount adapter configuration (-02), and ATEX\/IECEx Zone 0\/1 hazardous approvals (-05). \u003cstrong\u003eTechnical Recommendation:\u003c\/strong\u003e If your machinery exhibits higher baseline vibration amplitudes up to 8 mils pp and requires standard rail-mounted DIN hardware with CSA Div 2 compliance, stick with the \u003cstrong\u003e990-08-70-03-01\u003c\/strong\u003e. If tighter vibration resolution is required in a European hazardous zone environment, evaluate the alternative model link above.\u003c\/p\u003e\n\u003ch3\u003eInstallation \u0026amp; Wiring Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN Rail Mounting:\u003c\/strong\u003e Secure the transmitter using the factory-provided -03 DIN clips and screws inside a protected local junction box or instrument cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Wiring:\u003c\/strong\u003e Connect the 2-wire 4 to 20 mA loop using shielded twisted-pair cable, ensuring total loop resistance stays below 1,000 Ω at 35 V DC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBNC Access:\u003c\/strong\u003e Utilize the front BNC connector for temporary diagnostic data collection (up to 3 meters \/ 10 feet maximum cable distance for portable analyzers).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic Capabilities \u0026amp; Fault Monitoring\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Current Drop:\u003c\/strong\u003e An output current plunging below 3.6 mA instantly flags a broken probe cable, disconnected power terminal, or internal sensor failure via the NOT OK defeat circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProximity Gap Checks:\u003c\/strong\u003e Verify using a digital voltmeter that the probe DC gap voltage corresponds to the required 0.5 to 1.75 mm installation window before locking zero\/span adjustments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight \u0026amp; Expert Guidance\u003c\/h3\u003e\n\u003cp\u003eGlobal PLC Spare HUB's Insight notes that unlike multi-slot rack systems (such as the 3500 series), the 990 transmitter relies on loop-powered integrity. When deploying the \u003cstrong\u003e990-08-70-03-01\u003c\/strong\u003e, ensure your DCS or PLC analog input card is configured with a 250 Ω input resistor to properly translate the 4 to 20 mA signal into accurate engineering units without grounding loops.\u003c\/p\u003e\n\u003ch3\u003eCompatible Equipment \u0026amp; Target Application Scenarios\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Equipment:\u003c\/strong\u003e Bently Nevada 3300 NSv proximity probes, 3300 NSv extension cables, and plant distributed control systems (DCS) or PLCs with 4-20 mA analog input cards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Application Scenarios:\u003c\/strong\u003e Small steam turbines, centrifugal air compressors, industrial pumps, motor-driven gearboxes, and auxiliary balance-of-plant skids where full rack protection is economically unviable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLogistics, Fulfillment \u0026amp; Warranty Protection\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Carriers:\u003c\/strong\u003e Express global dispatch via \u003cstrong\u003eFedEx\u003c\/strong\u003e, \u003cstrong\u003eUPS\u003c\/strong\u003e, and \u003cstrong\u003eDHL\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFulfillment Speed:\u003c\/strong\u003e Guaranteed processing and dispatch within 24 to 48 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Terms:\u003c\/strong\u003e Fully backed by a 12-month factory replacement or repair warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProfessional Frequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat causes the 990-08-70-03-01 transmitter output to drop below 3.6 mA?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAn output current dropping below 3.6 mA triggers the NOT OK signal defeat, indicating an open circuit, severed probe cable, or loss of operating power at the transmitter terminals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I adjust the zero and span settings without affecting each other?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the transmitter is engineered with non-interacting external potentiometers, allowing technicians to calibrate span without shifting the zero baseline setting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is maintaining the 0.5 to 1.75 mm probe gap critical for this model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOperating within this specific gap window ensures the Proximitor front-end remains in its linear region, allowing the transmitter to accurately scale displacement into the 4-20 mA loop.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat are the best selection guidelines when replacing an existing vibration transmitter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlways match the exact full-scale range option (e.g., -08 for 8 mils) and system electrical length (-70 for 7 meters) to preserve the factory-calibrated scale factor of your vibration loop.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow should I troubleshoot a sluggish 4-20 mA response during machinery startup?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCheck for excessive loop resistance exceeding 1,000 Ω, verify that plant power supply voltage is maintained between 12 and 35 V DC, and inspect signal cable shielding for ground loops.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures_8ba4a14f-832f-4772-a484-c09fd48b12f9.png?v=1784875470\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013934309558,"sku":"990-08-70-03-01","price":203.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_1_5c092660-4983-4b0d-b354-ad4e0f8e5dbd.jpg?v=1787039908"},{"product_id":"177230-02-02-05-seismic-sensor-bently-nevada-vibration-4-20ma","title":"177230-02-02-05 Seismic Sensor Bently Nevada Vibration 4-20mA","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eBently Nevada\u003c\/strong\u003e\u003c\/span\u003e \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e177230\u003c\/strong\u003e\u003c\/span\u003e \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e177230-02-02-05\u003c\/strong\u003e\u003c\/span\u003e is a loop-powered 4-20 mA seismic vibration transmitter.\u003c\/p\u003e\n\u003cp\u003eEngineers integrate this piezoceramic shear-mode accelerometer directly with PLCs, DCS, and SCADA systems for continuous overall vibration velocity monitoring.\u003c\/p\u003e\n\u003cp\u003eIt converts peak vibration velocity into an industry-standard 4-20 mA current loop signal over a 2-wire connection.\u003c\/p\u003e\n\u003cp\u003eThe hermetically sealed 316L stainless steel body incorporates a top-exit 3-pin MIL-C-5015 connector providing both 4-20 mA loop output and an unbuffered dynamic acceleration signal via Pin C.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eConfiguration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe matrix below outlines the detailed ordering code structure for model \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e177230-02-02-05\u003c\/strong\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" width=\"100%\"\u003e\n\u003cthead\u003e\n\u003ctr bgcolor=\"#f2f2f2\"\u003e\n\u003cth\u003eOrder Code Component\u003c\/th\u003e\n\u003cth\u003eOption Designation\u003c\/th\u003e\n\u003cth\u003eFunctional Specification Detail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBase Model Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e177230\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eBently Nevada\u003c\/strong\u003e\u003c\/span\u003e Seismic Vibration Transmitter Base Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull Scale Measurement Range (-AA)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e-02\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 50.8 mm\/s (0 to 2.0 in\/s) peak velocity range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response (-BB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e-02\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3 Hz to 1 kHz (180 cpm to 60 kcpm) ±10% bandpass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgency Approvals (-CC)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e-05\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMultiple global approvals (CSA\/NRTL\/C, ATEX\/IECEx certified)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Architecture \u0026amp; System Parameters\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eKey technical specifications are organized into distinct functional parameter domains below.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGeneral Physical Specs\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand Name:\u003c\/strong\u003e \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eBently Nevada\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Part Code:\u003c\/strong\u003e \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e177230-02-02-05\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Construction:\u003c\/strong\u003e Hermetically sealed 316L stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Top-exit 3-pin MIL-C-5015, 316L stainless steel shell\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhysical Dimensions:\u003c\/strong\u003e 25.4 mm (1.00 in) diameter x 66.0 mm (2.60 in) height\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Mass:\u003c\/strong\u003e 131 g (4.62 oz) typical net weight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hole Spec:\u003c\/strong\u003e 1\/4-28 UNF center tapped body hole\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical \u0026amp; Dynamic Response\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcitation Power Supply:\u003c\/strong\u003e 12 to 30 Vdc loop power (current limited to 40 mA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Signal Output:\u003c\/strong\u003e 4 to 20 mA loop (Pin A = Positive, Pin B = Return)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic Output Signal:\u003c\/strong\u003e Unbuffered dynamic acceleration signal at Pin C (referenced to Pin B)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSettling Time:\u003c\/strong\u003e Less than 15 seconds to within 2% of final settled value\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounted Resonant Frequency:\u003c\/strong\u003e Greater than 12 kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransverse Sensitivity:\u003c\/strong\u003e Less than 5% of primary axis sensitivity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Isolation:\u003c\/strong\u003e Greater than 10^8 ohms; breakdown voltage rating 600 Vrms (\u0026lt;1 mA leakage)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental \u0026amp; Operating Tolerances\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -40 °C to +85 °C (-40 °F to +185 °F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelative Humidity Limit:\u003c\/strong\u003e Up to 100% condensing (non-submerged status)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShock Survivability:\u003c\/strong\u003e 9,810 m\/s² (1,000 g peak) maximum drop test rating\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Torque Range:\u003c\/strong\u003e 4 to 7 N·m (35.4 to 62.0 in·lbf)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTarget Equipment \u0026amp; Application Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eLoop-powered seismic transmitters provide cost-effective machinery protection across general plant balance-of-plant assets.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectric Motors \u0026amp; Blowers:\u003c\/strong\u003e Monitors casing vibration velocity to detect imbalance and bearing cage degradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling Tower Fans:\u003c\/strong\u003e Detects structural looseness and blade aerodynamic imbalance in humid outdoor environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentrifugal Water Pumps:\u003c\/strong\u003e Measures overall vibration levels caused by hydraulic cavitation or shaft misalignment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Gearboxes:\u003c\/strong\u003e Tracks casing velocity response to identify high-frequency gear tooth mesh faults.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDiagnostic Capabilities \u0026amp; Signal Pinout\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e177230-02-02-05\u003c\/strong\u003e\u003c\/span\u003e features a dual-output configuration via its 3-pin MIL connector wiring design.\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" width=\"100%\"\u003e\n\u003cthead\u003e\n\u003ctr bgcolor=\"#f2f2f2\"\u003e\n\u003cth\u003eConnector Terminal Pin\u003c\/th\u003e\n\u003cth\u003eFunctional Signal Assignment\u003c\/th\u003e\n\u003cth\u003eDiagnostic Application\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin A\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4-20 mA Positive Loop (+)\u003c\/td\u003e\n\u003ctd\u003eConnects to PLC\/DCS analog input card for overall velocity trend monitoring.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin B\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4-20 mA Loop Return (-)\u003c\/td\u003e\n\u003ctd\u003eCommon return for current loop power and dynamic signal reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin C\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDynamic Acceleration Signal\u003c\/td\u003e\n\u003ctd\u003eProvides raw, unbuffered dynamic acceleration output for portable FFT analyzer collection.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eDuring a predictive maintenance upgrade at a water treatment facility, engineers needed continuous monitoring on high-pressure pumps.\u003c\/p\u003e\n\u003cp\u003eThe existing plant control system lacked dedicated vibration monitor rack slots but had open 4-20 mA PLC channels.\u003c\/p\u003e\n\u003cp\u003eInstalling the \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e177230-02-02-05\u003c\/strong\u003e\u003c\/span\u003e allowed direct integration into the existing PLC without purchasing specialized signal conditioners.\u003c\/p\u003e\n\u003cp\u003eWhen routine 4-20 mA velocity trends indicated an elevated baseline, field reliability technicians connected a portable vibration analyzer to Pin C.\u003c\/p\u003e\n\u003cp\u003eThe unbuffered dynamic acceleration output allowed immediate FFT spectrum analysis, revealing early bearing outer-race pitting before catastrophic failure occurred.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation \u0026amp; Mounting Guidelines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAdhere to these technical steps when mounting seismic transmitters to rotating machinery balance points.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePrepare a smooth, flat mounting surface with a surface finish of 0.8 µm (32 µin) Ra or better.\u003c\/li\u003e\n\u003cli\u003eApply thread-locking compound sparingly and torque the 1\/4-28 UNF mounting stud to 4–7 N·m (35.4–62.0 in·lbf).\u003c\/li\u003e\n\u003cli\u003eEnsure excitation voltage remains between 12 Vdc and 30 Vdc; use 250-ohm loop resistors for 1-5 Vdc PLC conversion.\u003c\/li\u003e\n\u003cli\u003eRoute shielded twisted-pair wiring with the shield grounded at the PLC cabinet end only to prevent ground loops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eProcurement, Shipping \u0026amp; 12-Month Warranty\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWe supply authentic industrial condition monitoring hardware globally with full service support guarantees.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e 1 x \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eBently Nevada\u003c\/strong\u003e\u003c\/span\u003e \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e177230-02-02-05\u003c\/strong\u003e\u003c\/span\u003e seismic transmitter module.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Terms:\u003c\/strong\u003e Backed by a comprehensive 12-Month replacement warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Logistics:\u003c\/strong\u003e Fast international dispatch via FedEx, UPS, or DHL express couriers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder Handling Time:\u003c\/strong\u003e Orders process and dispatch within 24 to 48 hours following payment verification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the primary operational benefit of the Pin C terminal connection?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Pin C provides an unbuffered dynamic acceleration signal, allowing analysts to connect portable spectrum analyzers without disrupting the 4-20 mA PLC loop.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is settling time specified at up to 15 seconds after applying loop power?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Internal charge amplifier circuits require up to 15 seconds to stabilize internal bias voltages before output readings settle within 2% of actual value.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this 4-20 mA transmitter be powered directly from standard 24 Vdc PLC loop power?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The unit accepts supply voltages from 12 Vdc to 30 Vdc, making it directly compatible with standard 24 Vdc process automation power supplies.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does selecting low-frequency Option -02 (3 Hz) affect low-speed machine monitoring?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The 3 Hz lower frequency corner extends accurate velocity measurement down to 180 rpm, making it suitable for slower rotating fans and pumps.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What express shipping services are used to dispatch urgent field replacements?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: We process and ship orders within 24 to 48 hours using global express carriers including FedEx, UPS, and DHL.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/177230.png?v=1787038759\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013939257526,"sku":"177230-02-02-05","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/177230_1.png?v=1787038924"},{"product_id":"990-05-xx-01-00-bently-nevada-vibration-transmitter-990-series","title":"990-05-XX-01-00 Bently Nevada Vibration Transmitter 990 Series","description":"\u003ch3\u003eBently Nevada 990-05-XX-01-00 Transmitter \u0026amp; Global PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cp\u003ePlant operators deploy the \u003cspan style=\"color: #0056b3;\"\u003e\u003cb\u003e990-05-XX-01-00\u003c\/b\u003e\u003c\/span\u003e vibration transmitter to integrate non-contacting proximity measurements directly into distributed control systems. Global PLC Spare HUB field engineers frequently specify this module for compact machinery setups where standard rack-based monitors are unnecessary. For example, a petrochemical facility utilized the \u003cspan style=\"color: #0056b3;\"\u003e\u003cb\u003e990\u003c\/b\u003e\u003c\/span\u003e series unit to monitor centrifugal compressor vibration levels, transmitting a direct 4-20 mA loop signal to the control room PLC. Our technical team tests every unit to guarantee loop stability before global dispatch.\u003c\/p\u003e\n\u003ch3\u003eConfiguration Breakdown \u0026amp; Suffix Architecture\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBase Model: \u003cspan style=\"color: #0056b3;\"\u003e\u003cb\u003e990\u003c\/b\u003e\u003c\/span\u003e Vibration Transmitter (Weighing 0.43 kg \/ 0.9 lbm)\u003c\/li\u003e\n\u003cli\u003eFull-scale Option: 05 = 0 to 5 mils pp (0 to 125 micrometers pp)\u003c\/li\u003e\n\u003cli\u003eSystem Length Option: XX = Custom modification required\u003c\/li\u003e\n\u003cli\u003eMounting Option: 01 = Standard 35 mm DIN rail clips\u003c\/li\u003e\n\u003cli\u003eAgency Approval Option: 00 = Standard non-hazardous area configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications Table\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePerformance Parameter\u003c\/th\u003e\n\u003cth\u003eEngineering Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Source\u003c\/td\u003e\n\u003ctd\u003eAccepts 1 non-contacting 3300 NSv Proximity Probe and extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 Vdc input at transmitter terminal (+28 Vdc for hazardous areas)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Output\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mAdc over specified full-scale range in 2-wire configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop Accuracy\u003c\/td\u003e\n\u003ctd\u003eWithin plus or minus 1.5% over specified full-scale range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e5 Hz to 6,000 Hz (+0, -3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1,000 ohms including cable at 35 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Limiting\u003c\/td\u003e\n\u003ctd\u003e23 mA typical protection threshold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eInstallation Guide \u0026amp; Operational Setup\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the transmitter securely onto standard 35 mm DIN rails inside an industrial control cabinet.\u003c\/li\u003e\n\u003cli\u003eGap the associated proximity probe between 0.5 mm and 1.75 mm (20 and 55 mils) from the target surface.\u003c\/li\u003e\n\u003cli\u003eConnect the 2-wire loop ensuring total resistance remains under 1,000 ohms at 35 Vdc.\u003c\/li\u003e\n\u003cli\u003eUse non-interacting external adjustments to calibrate zero and span parameters on-site.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic Capabilities \u0026amp; Equipment Suitability\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDrives output to less than 3.6 mA within 100 microseconds during a Not OK sensor fault condition.\u003c\/li\u003e\n\u003cli\u003eRestores normal signal output within 2 to 3 seconds after clearing fault conditions.\u003c\/li\u003e\n\u003cli\u003eDelivers reliable vibration monitoring for small motors, fans, blowers, and centrifugal pumps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLogistics, Warranty \u0026amp; Shipping Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBacked by a comprehensive 12-month operational warranty covering factory defects.\u003c\/li\u003e\n\u003cli\u003eExpress worldwide delivery within 24 to 48 hours via DHL, FedEx, and UPS.\u003c\/li\u003e\n\u003cli\u003eShipped in secure anti-static industrial packaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eExpert FAQ \u0026amp; Selection Guide\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eQ: How does the transmitter handle sensor fault conditions during continuous monitoring?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: When a Not OK condition occurs, the signal output drops below 3.6 mA within 100 microseconds to alert the control system.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: What is the required target size for proper operation with the \u003cspan style=\"color: #0056b3;\"\u003e\u003cb\u003e990-05-XX-01-00\u003c\/b\u003e\u003c\/span\u003e?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: The rotating shaft target must have a minimum diameter of 9.5 mm (0.375 in) to maintain linear measurement accuracy.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Can technicians adjust zero and span settings without causing cross-talk errors?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The unit features non-interacting external adjustments allowing independent calibration of zero and span.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: What are the maximum leadwire limitations for the Proximitor sensor output connector?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: The maximum cable distance for the BNC connector output is restricted to 3 meters (10 feet).\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: How do engineers select the correct full-scale option during procurement?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: Match the full-scale option (such as option 05 for 0-5 mils pp) to the maximum expected peak-to-peak vibration displacement of your specific machinery.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures_8ba4a14f-832f-4772-a484-c09fd48b12f9.png?v=1784875470\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013971468470,"sku":"990-05-XX-01-00","price":197.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_6_7280cf37-192b-45bb-a587-2505e8af42fb.jpg?v=1789108193"},{"product_id":"bently-nevada-990-04-50-01-00-transmitter-unit-fast-delivery","title":"Bently Nevada 990-04-50-01-00 Transmitter Unit - Fast Delivery","description":"\u003ch3\u003e\u003cb\u003eTransmitter Architecture and Core Overview\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003e990-04-50-01-00\u003c\/b\u003e\u003c\/span\u003e is an advanced industrial vibration transmitter manufactured by \u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003eBently Nevada\u003c\/b\u003e\u003c\/span\u003e within the \u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003e990\u003c\/b\u003e\u003c\/span\u003e series. Engineered to interface directly with non-contacting proximity probe systems, it converts raw vibration parameters into a standardized 4 to 20 mA loop-powered output. Its compact DIN-rail mount design streamlines installation in remote junction boxes and machinery control panels.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eModel Configuration Breakdown\u003c\/b\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eConfiguration Parameter\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cb\u003eSelected Suffix Option \u0026amp; Description\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eBase Model \u0026amp; Type\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cb\u003e990\u003c\/b\u003e = 990 Vibration Transmitter Platform\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eFull-Scale Range Option\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cb\u003e04\u003c\/b\u003e = 0 to 4 mils pp (0 to 100 micrometers pp) displacement scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eSystem Length Option\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cb\u003e50\u003c\/b\u003e = 5.0 metres (16.4 feet) total system length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eMounting Hardware Option\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cb\u003e01\u003c\/b\u003e = 35 mm DIN rail mounting clips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eAgency Approval Option\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cb\u003e00\u003c\/b\u003e = Standard non-hazardous area configuration (not required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cb\u003eTechnical Specifications \u0026amp; Performance Matrix\u003c\/b\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003ePerformance Category\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cb\u003eEngineering Specification Detail\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eInput Sensor Compatibility\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003eAccepts 1 non-contacting 3300 NSv Proximity Probe and extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eLoop Power Supply Requirement\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 Vdc input applied directly at terminal blocks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eCurrent Output \u0026amp; Accuracy\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mAdc loop output; within plus-minus 1.5% loop accuracy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eFrequency Response\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e5 Hz to 6,000 Hz (+0, -3 dB) bandwidth range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eMaximum Loop Resistance\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e1,000 ohms including cabling at 35 Vdc operating voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003ePhysical Weight\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e0.43 kg (0.9 lbm) net transmitter assembly weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cb\u003eInstallation and Mechanical Guidelines\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the unit securely onto a standard 35 mm industrial DIN rail inside a protective enclosure.\u003c\/li\u003e\n\u003cli\u003eEnsure the connected 3300 NSv proximity probe is statically gapped between 0.5 and 1.75 mm from the target.\u003c\/li\u003e\n\u003cli\u003eVerify that external loop resistance does not exceed 1,000 ohms at 35 Vdc supply voltage.\u003c\/li\u003e\n\u003cli\u003eConnect shield drain wires properly to prevent ground loops across long signal transmission runs.\u003c\/li\u003e\n\u003cli\u003eUse the non-interacting external zero and span potentiometers for precise field calibration adjustments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eDiagnostic Capabilities and Fault Detection\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eThe unit features built-in Not-OK signal defeat circuitry that automatically forces output current below 3.6 mA within 100 microseconds if a sensor fault or broken cable occurs. This rapid downscale behavior alerts control systems to probe failures instantly, preventing false trip commands while ensuring operators are notified of telemetry loss before machinery damage escalates.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eTarget Equipment and Application Scenarios\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSmall to Medium-Sized Industrial Centrifugal Pumps\u003c\/li\u003e\n\u003cli\u003eBalanced-Draft Fans and Blowers in Power Plants\u003c\/li\u003e\n\u003cli\u003eIndustrial Gearboxes and Auxiliary Compressor Trains\u003c\/li\u003e\n\u003cli\u003eCompact Steam Turbines and Motor-Driven Centrifuges\u003c\/li\u003e\n\u003cli\u003eBalance-of-Plant Skids requiring direct 4-20mA PLC integration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eComparative Selection Analysis\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eWhen selecting monitoring hardware for specialized machinery, engineers frequently compare displacement ranges and scale configurations. For an alternative configuration featuring an extended 0 to 8 mils pp full-scale range and a 7.0-meter system length with agency approvals, review the \u003ca href=\"https:\/\/www.plcsparehub.com\/products\/990-08-70-03-01-bently-nevada-990-vibration-transmitter\"\u003e\u003cb\u003e990-08-70-03-01\u003c\/b\u003e\u003c\/a\u003e model. While the subject model is calibrated for tight 0-4 mils vibration monitoring, the comparative unit accommodates higher vibration thresholds.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eGlobal PLC Spare HUB Insight\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003eInstrumentation engineers operating the \u003cspan style=\"color: #b91c1c;\"\u003e\u003cb\u003e990-04-50-01-00\u003c\/b\u003e\u003c\/span\u003e note that utilizing the front BNC connection for temporary test equipment hookups allows quick raw signal verification without breaking 4-20mA loop wiring. For example, connecting a portable spectrum analyzer to the BNC port during routine maintenance isolates mechanical unbalance from electrical noise instantly.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eLogistics, Fulfillment, and Warranty\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eExpedited order processing and dispatch within 24 to 48 hours of purchase confirmation.\u003c\/li\u003e\n\u003cli\u003eReliable international shipping channels coordinated via FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003ePackaged securely in heavy-duty industrial materials to prevent transit damage.\u003c\/li\u003e\n\u003cli\u003eFully backed by a comprehensive 12-month manufacturer replacement warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eBuying Guide and Engineering FAQ\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eQ: What is the primary function of the Not-OK signal defeat feature?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: It drops the 4-20mA output below 3.6 mA during sensor faults to signal control systems that the vibration reading is invalid.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Why must the probe gap be maintained between 0.5 and 1.75 mm?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: This specific gap range guarantees linear electrical response across the full 0 to 4 mils pp measurement scale.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: Can I connect this transmitter directly to standard PLC analog input cards?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the 2-wire 4-20mA loop output integrates seamlessly with any standard PLC or DCS analog input card.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: How does loop resistance affect maximum cable run distances?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: Total loop resistance including wiring must remain under 1,000 ohms at 35 Vdc to maintain proper transmitter operating current.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eQ: What type of proximity probe is required for this transmitter model?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA: It requires a non-contacting Bently Nevada 3300 NSv Proximity Probe and matching extension cable system.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures_8ba4a14f-832f-4772-a484-c09fd48b12f9.png?v=1784875470\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013971599542,"sku":"990-04-50-01-00","price":203.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_5_5ea3619a-d24f-414c-a100-cffa1ef66dfe.jpg?v=1788428188"},{"product_id":"990-04-50-02-05-990-vibration-transmitter-bently-nevada-module","title":"990-04-50-02-05 990 Vibration Transmitter Bently Nevada Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e990-04-50-02-05\u003c\/span\u003e\u003c\/strong\u003e is a compact, loop-powered vibration monitoring solution developed by \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eBently Nevada\u003c\/span\u003e\u003c\/strong\u003e within the trusted \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e990 Series\u003c\/span\u003e\u003c\/strong\u003e. Designed as an integrated \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eVibration Transmitter\u003c\/span\u003e\u003c\/strong\u003e, this unit directly accepts inputs from a 3300 NSv proximity probe and extension cable, converting mechanical displacement into a standard 4 to 20 mA proportional output for direct connection to PLC or DCS control architectures.\u003c\/p\u003e\n\u003ch3\u003eConfiguration Breakdown \u0026amp; Suffix Codes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Model:\u003c\/strong\u003e \u003cspan style=\"color: #0056b3;\"\u003e990\u003c\/span\u003e Vibration Transmitter System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-Scale Option (04):\u003c\/strong\u003e 0 to 4 mils pp (0 to 100 micrometers pp) measurement range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Length Option (50):\u003c\/strong\u003e 5.0 meters (16.4 feet) total system length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Option (02):\u003c\/strong\u003e Bulkhead mounting screws configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgency Approval Option (05):\u003c\/strong\u003e CSA Division 2, ATEX Zone 0, ATEX Zone 2, and ABS maritime approvals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e \u003cspan style=\"color: #0056b3;\"\u003eBently Nevada\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e \u003cspan style=\"color: #0056b3;\"\u003e990-04-50-02-05\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Compatibility:\u003c\/strong\u003e One non-contacting 3300 NSv Proximity Probe and extension cable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e +12 to +35 Vdc input at transmitter terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Output:\u003c\/strong\u003e 4 to 20 mAdc over specified full-scale range in 2-wire configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Accuracy:\u003c\/strong\u003e Within plus-minus 1.5 percent over specified full-scale range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Loop Resistance:\u003c\/strong\u003e 1,000 Ohms including cable at 35 Vdc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Limiting:\u003c\/strong\u003e 23 mA typical protection threshold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 5 Hz to 6,000 Hz (+0, -3 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Gap Requirement:\u003c\/strong\u003e 0.5 to 1.75 mm (20 to 55 mils) from target\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Target Size:\u003c\/strong\u003e 9.5 mm (0.375 in) diameter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Weight:\u003c\/strong\u003e 0.43 kg (0.9 lbm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePackaging List \u0026amp; Commercial Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOne \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e990-04-50-02-05\u003c\/span\u003e\u003c\/strong\u003e vibration transmitter unit\u003c\/li\u003e\n\u003cli\u003eBulkhead mounting hardware pack\u003c\/li\u003e\n\u003cli\u003eManufacturer compliance documentation and calibration sheet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Comprehensive 12-month factory coverage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFulfillment:\u003c\/strong\u003e Rapid global shipping via FedEx, UPS, and DHL within 24-48 hours\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTarget Machinery \u0026amp; Application Scenarios\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSmall to medium-sized industrial centrifugal pumps and blowers.\u003c\/li\u003e\n\u003cli\u003eCompact electric motors and overhung process compressors.\u003c\/li\u003e\n\u003cli\u003eMarine auxiliary rotating equipment requiring ABS maritime certification.\u003c\/li\u003e\n\u003cli\u003eSkid-mounted balance-of-plant machinery where rack-based monitors are unnecessary.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic Capability\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProvides continuous 4-20mA trend data for real-time shaft relative vibration tracking.\u003c\/li\u003e\n\u003cli\u003eFeatures automated NOT OK signal defeat, dropping output below 3.6 mA within 100 microseconds upon transducer faults.\u003c\/li\u003e\n\u003cli\u003eSupports local diagnostic signal checking via BNC connector with up to 3 meters of leadwire accommodation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cp\u003eWhen commissioning the \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e990-04-50-02-05\u003c\/span\u003e\u003c\/strong\u003e in harsh industrial environments, instrument technicians should verify that total loop resistance—including barrier impedances—does not exceed 1,000 Ohms at 35 Vdc. Proper shielding grounded strictly at the control system cabinet prevents electromagnetic induction from corrupting the low-level 4-20mA process loop.\u003c\/p\u003e\n\u003ch3\u003eModel Selection and Comparison Analysis\u003c\/h3\u003e\n\u003cp\u003eWhen engineering machinery protection loops, selecting the correct transmitter variant depends heavily on the mechanical measurement axis and physical scale requirements. For instance, comparing the current radial vibration unit with the alternative model \u003ca href=\"https:\/\/www.plcsparehub.com\/products\/991-06-50-02-01-bently-nevada-thrust-vibration-transmitter-module-unit\"\u003e991-06-50-02-01 Bently Nevada Thrust Vibration Transmitter Module Unit\u003c\/a\u003e highlights a fundamental application shift: while the \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e990-04-50-02-01\u003c\/span\u003e\u003c\/strong\u003e series is engineered primarily for radial shaft vibration monitoring (0 to 4 mils range), the 991 series is specifically optimized for axial thrust position (monitor axial displacement) with distinct scale factors and hazardous ratings (such as CSA\/ATEX Zone 2 with option 01). Choose the 990 transmitter for casing-mounted radial displacement tracking, and reserve 991 units strictly for rotor end-play and thrust bearing wear monitoring.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion: What action does the transmitter take during a transducer failure?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAnswer: Under a Not OK condition, the signal output drops below 3.6 mA within 100 microseconds to alert the control system of a loop fault.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion: Can I adjust the zero and span settings in the field?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAnswer: Yes, the unit features non-interacting external adjustments allowing precise calibration during routine maintenance checks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion: What is the maximum allowable cable distance for the BNC test port?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAnswer: The maximum leadwire length for the Proximitor Sensor BNC output connector is restricted to 3 meters (10 feet).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion: Are zero and span adjustments mutually dependent?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAnswer: No, the transmitter utilizes non-interacting external adjustments, meaning modifying the zero setting does not alter the calibrated span.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion: How should loop power supplies be configured in Class I Division 2 areas?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAnswer: Ensure the DC power supply output does not exceed 28 volts when operating within non-hazardous or Zone 2\/Div 2 classified per installation drawings.\u003c\/p\u003e\n\u003ch3\u003eBuying Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that your control system input card accepts standard 2-wire 4 to 20 mA loop signals.\u003c\/li\u003e\n\u003cli\u003eConfirm that the 5.0-meter system length matches the physical separation distance between your probe installation point and transmitter mounting location.\u003c\/li\u003e\n\u003cli\u003eSelect expedited courier options like DHL or FedEx to ensure rapid delivery for urgent plant turnarounds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures_8ba4a14f-832f-4772-a484-c09fd48b12f9.png?v=1784875470\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013971632310,"sku":"990-04-50-02-05","price":185.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_2_344c3773-19fb-45ab-b0e9-290d6cb18145.jpg?v=1786421349"},{"product_id":"990-08-50-02-cn-bently-nevada-vibration-transmitter-0-8-mils-range","title":"990-08-50-02-CN Bently Nevada Vibration Transmitter 0-8 Mils Range","description":"\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cp\u003eInstrument engineers deploying machinery protection loops often balance loop resistance constraints with long cable runs. The \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e990-08-50-02-CN\u003c\/span\u003e\u003c\/strong\u003e transmitter integrates signal processing locally at the skids, converting proximity probe gaps directly into a 4-20 mA current loop. For example, on remote centrifugal compressors, mounting this unit on bulkhead brackets near the casing minimizes high-frequency noise pickup before signals travel back to the central control room.\u003c\/p\u003e\n\u003ch3\u003eProduct Overview and Technical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eBently Nevada\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e990-08-50-02-CN\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e990 Vibration Transmitter Series\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Parameters:\u003c\/strong\u003e Accepts 1 non-contacting 3300 NSv Proximity Probe and matching extension cable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Requirements:\u003c\/strong\u003e +12 to +35 Vdc input at transmitter terminal; 28 V for hazardous locations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Output:\u003c\/strong\u003e 4 to 20 mAdc over specified full-scale range in 2-wire configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Accuracy:\u003c\/strong\u003e Within ±1.5% over full-scale range measured across a 250 ohm loop resistance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 5 Hz to 6,000 Hz (+0, -3 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Limits:\u003c\/strong\u003e Maximum 1,000 ohm loop resistance at 35 Vdc; 23 mA typical current limiting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFault Handling:\u003c\/strong\u003e Drops below 3.6 mA within 100 microseconds during a Not OK condition\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eConfiguration Breakdown\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e08 Option:\u003c\/strong\u003e Full-scale range of 0 to 8 mils peak-to-peak (0 to 200 micrometers peak-to-peak)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 Option:\u003c\/strong\u003e System length configuration of 5.0 meters (16.4 feet)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e02 Option:\u003c\/strong\u003e Bulkhead screws mounting configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCN Option:\u003c\/strong\u003e Country-specific agency approvals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComparison and Selection Guide\u003c\/h3\u003e\n\u003cp\u003eEngineers matching replacement monitoring hardware should evaluate scale ranges against shaft displacement thresholds. Review the alternative part number below for different measurement spans:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.plcsparehub.com\/products\/bently-nevada-990-05-70-02-00-vibration-transmitter-0-5-mils-range\"\u003e\u003cspan style=\"color: #0056b3;\"\u003e990-05-70-02-00\u003c\/span\u003e\u003c\/a\u003e\u003c\/strong\u003e: Features a 0 to 5 mils range with a 7.0-meter system length, suited for tighter clearance tolerances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e990-08-50-02-CN\u003c\/span\u003e\u003c\/strong\u003e: Features a 0 to 8 mils range with a 5.0-meter system length, optimized for standard industrial machinery displacement boundaries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications and Diagnostic Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Steam turbines, hydro turbines, pipeline booster pumps, and industrial gearboxes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostics:\u003c\/strong\u003e Detects radial shaft vibration anomalies, journal bearing clearance loss, unbalance, and early-stage shaft misalignment before catastrophic failure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty and Logistics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Coverage:\u003c\/strong\u003e Backed by a full 12-month operational warranty from the invoice date.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFulfillment Partners:\u003c\/strong\u003e Express dispatch handled securely via FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispatch Timeline:\u003c\/strong\u003e Guaranteed worldwide shipping within 24 to 48 hours of order confirmation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat specific maintenance step prevents calibration drift on the \u003cspan style=\"color: #0056b3;\"\u003e990-08-50-02-CN\u003c\/span\u003e unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTechnicians should periodically verify zero and span potentiometer settings using a precision signal generator connected to the test input terminals while monitoring the 4-20 mA loop current.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy does the \u003cspan style=\"color: #0056b3;\"\u003e990-08-50-02-CN\u003c\/span\u003e output drop below 3.6 mA during operation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis drop indicates a Not OK status triggered by a disconnected probe, severed cable, or a probe gap outside the required 0.5 to 1.75 mm operating window.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does system length selection affect the \u003cspan style=\"color: #0056b3;\"\u003e990-08-50-02-CN\u003c\/span\u003e installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 5.0-meter system length option dictates the combined electrical length of the probe and extension cable, which must match the transmitter calibration to preserve scale factor linearity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the \u003cspan style=\"color: #0056b3;\"\u003e990-08-50-02-CN\u003c\/span\u003e transmitter drive long control room cable loops?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, provided the total loop resistance does not exceed 1,000 ohms at a +35 Vdc supply voltage level.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat selection criteria matter most when replacing a legacy transmitter with the \u003cspan style=\"color: #0056b3;\"\u003e990-08-50-02-CN\u003c\/span\u003e?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures_8ba4a14f-832f-4772-a484-c09fd48b12f9.png?v=1784875470\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eVerify that the full-scale option code matches your machine's vibration trip limits and ensure the mechanical bulkhead mounting pattern aligns with your existing junction box layout.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013971763382,"sku":"990-08-50-02-CN","price":203.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_5_7c424b7a-52d2-486c-b9ff-e4e7ae4716ee.jpg?v=1784875492"},{"product_id":"990-08-xx-03-00-bently-nevada-probe-transmitter-4-20-ma-axial-monitoring","title":"990-08-XX-03-00 Bently Nevada Probe Transmitter | 4-20 mA Axial Monitoring","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview: Axial Motion Monitoring with a 4–20 mA Output\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #2e74b5;\"\u003eBently Nevada 990-08-XX-03-00\u003c\/span\u003e\u003c\/strong\u003e is a probe vibration transmitter configuration for axial displacement monitoring. It converts a compatible proximity probe signal into a standard \u003cstrong\u003e4–20 mA current output\u003c\/strong\u003e for industrial control and monitoring systems.\u003c\/p\u003e\n\u003cp\u003eThe transmitter accepts one non-contacting \u003cstrong\u003e3300 NSv proximity probe\u003c\/strong\u003e and its compatible extension cable. Its two-wire loop design supports integration with PLC analog inputs, DCS controllers, and other compatible current-loop receivers.\u003c\/p\u003e\n\u003cp\u003eThe 08 full-scale option represents \u003cstrong\u003e0–8 mils peak-to-peak (0–200 μm peak-to-peak)\u003c\/strong\u003e. The 03 mounting option specifies DIN clips and screws. The 00 agency approval option indicates that no agency approval is specified by that ordering code.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Bently Nevada\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Number:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #2e74b5;\"\u003e990-08-XX-03-00\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Probe vibration transmitter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrdering Model Description:\u003c\/strong\u003e 991 thrust transmitter family, as provided in the ordering information\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Purpose:\u003c\/strong\u003e Axial displacement monitoring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 4–20 mA DC, two-wire configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e DIN rail using clips and screws\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing Origin:\u003c\/strong\u003e USA, according to the supplied product information\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 months, subject to supplier terms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Number\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan style=\"color: #2e74b5;\"\u003e990-08-XX-03-00\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eProbe vibration transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Application\u003c\/td\u003e\n\u003ctd\u003eAxial displacement \/ thrust position monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Input\u003c\/td\u003e\n\u003ctd\u003eOne non-contacting 3300 NSv proximity probe with compatible extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull-Scale Option\u003c\/td\u003e\n\u003ctd\u003e08: 0–8 mils peak-to-peak (0–200 μm peak-to-peak)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Length Option\u003c\/td\u003e\n\u003ctd\u003eXX: Specify the required MOD number\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Option\u003c\/td\u003e\n\u003ctd\u003e03: DIN clips and screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAgency Approval Option\u003c\/td\u003e\n\u003ctd\u003e00: Not required by the ordering option\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4–20 mA DC, two-wire loop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Supply\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 VDC at the transmitter terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecified Linear Range\u003c\/td\u003e\n\u003ctd\u003e0.25–1.65 mm for Prox Out, according to the supplied specification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop Accuracy\u003c\/td\u003e\n\u003ctd\u003eTypically within ±1.5% of specified full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1,000 Ω, including cable, at 35 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Limiting\u003c\/td\u003e\n\u003ctd\u003e23 mA typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZero and Span Adjustment\u003c\/td\u003e\n\u003ctd\u003eExternal, non-interacting adjustments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNot OK Response\u003c\/td\u003e\n\u003ctd\u003eOutput falls below 3.6 mA within 100 μs after a Not OK condition occurs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Recovery\u003c\/td\u003e\n\u003ctd\u003eOutput returns within 0.1 seconds after the Not OK condition clears\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-35°C to +85°C (-31°F to +185°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-51°C to +100°C (-60°F to +212°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Weight\u003c\/td\u003e\n\u003ctd\u003e0.43 kg (0.9 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration note:\u003c\/strong\u003e The XX system-length field requires the applicable MOD number. Confirm this value before ordering to match the transmitter with the installed probe system.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHow the Transmitter Supports Machinery Protection\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe transmitter converts a compatible proximity probe measurement into a current signal that downstream equipment can interpret. This arrangement allows control-system engineers to monitor axial movement without relying solely on a local vibration rack display.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Measurement:\u003c\/strong\u003e The 3300 NSv proximity probe senses the position of a compatible conductive target.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Conversion:\u003c\/strong\u003e The transmitter converts the probe system signal into a proportional 4–20 mA output within its configured range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl-System Integration:\u003c\/strong\u003e A compatible PLC, DCS, or monitoring input reads the current signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlarm Processing:\u003c\/strong\u003e Engineers configure warning and trip thresholds in the receiving system when the application requires them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFault Investigation:\u003c\/strong\u003e Technicians compare the current signal with independent measurements and operating conditions.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e The transmitter provides a measurement signal, not a complete machine shutdown function. The receiving system must implement the required alarms, interlocks, and protection logic.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSignal Performance and Loop Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eReliable readings depend on correct probe compatibility, system length, loop power, and input configuration. Engineers should verify these parameters before connecting the transmitter to an operating control system.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Power:\u003c\/strong\u003e Supply 12–35 VDC at the transmitter terminals. Account for voltage drops across the receiver, wiring, and other loop components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad Resistance:\u003c\/strong\u003e Keep the total loop resistance within 1,000 Ω at a 35 VDC supply. Recalculate the allowable load at lower supply voltages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Scaling:\u003c\/strong\u003e Configure the receiving analog input for 4–20 mA and apply the correct engineering-unit range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e The stated typical accuracy is ±1.5% of full scale under the specified test conditions. The reference uses the TEST signal input and voltage measured across a 250 Ω loop resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero and Span:\u003c\/strong\u003e Use the external adjustments during authorized calibration. Record the initial and final readings for traceability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFault Signaling:\u003c\/strong\u003e The specified Not OK response drops below 3.6 mA. Confirm that the receiving device recognizes this condition correctly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 0–8 mils peak-to-peak option describes the ordered full-scale measurement setting. Do not assume that every output configuration has the same engineering-unit scaling.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRecommended Equipment and Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eEquipment or System\u003c\/th\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003cth\u003eEngineering Benefit\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSteam Turbines\u003c\/td\u003e\n\u003ctd\u003eAxial shaft position trending\u003c\/td\u003e\n\u003ctd\u003eHelps operators identify changes in thrust position.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompressors\u003c\/td\u003e\n\u003ctd\u003eThrust movement monitoring\u003c\/td\u003e\n\u003ctd\u003eSupports investigation of changing axial position during load changes.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndustrial Pumps\u003c\/td\u003e\n\u003ctd\u003eAxial displacement observation\u003c\/td\u003e\n\u003ctd\u003eProvides a current signal for compatible control-system monitoring.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGearboxes\u003c\/td\u003e\n\u003ctd\u003eAxial movement trending\u003c\/td\u003e\n\u003ctd\u003eHelps maintenance teams compare movement across operating conditions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePLC Systems\u003c\/td\u003e\n\u003ctd\u003eAnalog input acquisition\u003c\/td\u003e\n\u003ctd\u003eAllows current-loop measurements to enter the control application.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDCS Systems\u003c\/td\u003e\n\u003ctd\u003eProcess and machinery monitoring\u003c\/td\u003e\n\u003ctd\u003eSupports centralized trend displays and alarm handling.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eUse this transmitter only where the measured variable, probe arrangement, and required protection function match the application. Confirm the equipment manufacturer's requirements before applying it to a critical machine.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation and Commissioning Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 1 — Confirm the System Length:\u003c\/strong\u003e Identify the required MOD number and verify the complete probe system configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 2 — Mount the Transmitter:\u003c\/strong\u003e Secure the DIN clips and screws to a suitable rail or approved mounting arrangement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 3 — Verify the Probe:\u003c\/strong\u003e Confirm that the installed 3300 NSv probe and extension cable match the transmitter requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 4 — Check the Power Supply:\u003c\/strong\u003e Measure the DC voltage at the transmitter terminals before commissioning.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 5 — Inspect the Loop:\u003c\/strong\u003e Check polarity, terminal tightness, cable continuity, and total loop resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 6 — Configure the Analog Input:\u003c\/strong\u003e Select 4–20 mA operation and set the correct engineering-unit scaling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 7 — Verify the Output:\u003c\/strong\u003e Compare the current output against an approved test signal or known operating condition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 8 — Test Fault Handling:\u003c\/strong\u003e Verify how the PLC or DCS responds when the transmitter reports a Not OK condition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStep 9 — Document the Results:\u003c\/strong\u003e Record the MOD number, calibration settings, supply voltage, output values, and alarm thresholds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFollow approved site procedures before disconnecting any machinery protection circuit. Do not adjust zero or span while relying on unverified process measurements.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDiagnostic Capabilities and Field Troubleshooting\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe transmitter's current output gives technicians a useful starting point for diagnosing measurement-loop problems. Correct interpretation requires the configured measurement range and the receiver's fault-handling logic.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eObserved Condition\u003c\/th\u003e\n\u003cth\u003ePossible Cause\u003c\/th\u003e\n\u003cth\u003eRecommended Check\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput below 3.6 mA\u003c\/td\u003e\n\u003ctd\u003eNot OK condition, probe-system fault, or wiring issue\u003c\/td\u003e\n\u003ctd\u003eCheck transmitter status, probe connections, supply voltage, and the receiver's fault interpretation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput remains near 4 mA\u003c\/td\u003e\n\u003ctd\u003eLow measured value, incorrect scaling, or incorrect adjustment\u003c\/td\u003e\n\u003ctd\u003eVerify the actual axial position, configured range, and zero setting.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput remains near 20 mA\u003c\/td\u003e\n\u003ctd\u003eHigh measured value, incorrect scaling, or span adjustment issue\u003c\/td\u003e\n\u003ctd\u003eCheck the operating position and confirm the intended full-scale configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal fluctuates unexpectedly\u003c\/td\u003e\n\u003ctd\u003eLoose wiring, electrical interference, unstable probe readings, or machine movement\u003c\/td\u003e\n\u003ctd\u003eCompare loop current with independent measurements and inspect wiring and mounting.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePLC and field readings disagree\u003c\/td\u003e\n\u003ctd\u003eIncorrect input scaling, loop resistance, or analog input configuration\u003c\/td\u003e\n\u003ctd\u003eMeasure the loop current and verify the PLC input configuration and engineering-unit conversion.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFault clears but readings remain abnormal\u003c\/td\u003e\n\u003ctd\u003ePersistent probe, cable, calibration, or mechanical issue\u003c\/td\u003e\n\u003ctd\u003eCheck the complete probe system and confirm the calibration against an approved reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eField example:\u003c\/strong\u003e A turbine axial-position trend may suddenly fall below its normal operating range after maintenance. Before changing alarm limits, technicians should check the transmitter supply, probe connections, current loop, and receiving-channel scaling.\u003c\/p\u003e\n\u003cp\u003eThese checks help distinguish electrical faults from genuine shaft movement. They do not replace the machine manufacturer's protection procedures or an independent mechanical assessment.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eMechanical and Environmental Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Tip:\u003c\/strong\u003e Polyphenylene sulfide (PPS).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Case:\u003c\/strong\u003e AISI 303 or 304 stainless steel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Cable:\u003c\/strong\u003e 75 Ω coaxial cable with fluoroethylene propylene (FEP) insulation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional Cable Armor:\u003c\/strong\u003e Flexible AISI 302 stainless steel, with an optional FEP outer jacket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Specified Tensile Strength:\u003c\/strong\u003e 222 N (50 lbf) between the probe case and probe lead.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmitter Temperature:\u003c\/strong\u003e -35°C to +85°C during operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -51°C to +100°C.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProtect probe leads from sharp bends, crushing, abrasion, and excessive pulling force. Route signal cables away from high-current conductors where practical, and follow the approved grounding and shielding scheme.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFor axial monitoring, engineers should prioritize correct system length and signal scaling before investigating small changes in the 4–20 mA trend. An incorrect MOD number or receiver range can create misleading readings even when the loop appears electrically healthy.\u003c\/p\u003e\n\u003cp\u003eDuring a turbine overhaul, for example, a maintenance team may replace a proximity probe while retaining the existing transmitter. The team should verify the replacement probe's compatibility, extension cable arrangement, and system length before returning the channel to service.\u003c\/p\u003e\n\u003cp\u003eAfter commissioning, technicians should record the current output at a known operating condition. They should also document the configured zero, span, alarm thresholds, and response to a Not OK condition.\u003c\/p\u003e\n\u003cp\u003eThis approach improves fault isolation and helps prevent unnecessary transmitter replacement. It also gives the next maintenance team a clear reference for evaluating changes in axial position.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePackaging, Warranty, and Shipping\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Bently Nevada 990-08-XX-03-00 probe vibration transmitter configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 months, subject to the supplier's applicable terms and conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Carriers:\u003c\/strong\u003e FedEx, UPS, and DHL, subject to destination and service availability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDispatch Target:\u003c\/strong\u003e 24–48 hours after order confirmation, subject to stock verification and order processing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder Verification:\u003c\/strong\u003e Confirm the complete part number and required MOD number before dispatch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e Confirm the transmitter, mounting accessories, and included documentation against the supplier's packing list.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Why does the XX code require confirmation before purchase?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe XX field represents a system-length option that requires a MOD number. The correct value depends on the intended probe system configuration. Confirm the existing system documentation before ordering a replacement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: How should engineers interpret a current output that changes after a machine load change?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFirst, compare the change with the expected axial movement and the configured measurement range. Check the machine operating condition and verify the signal against independent data before treating the change as a fault.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: What is the most useful commissioning record for future troubleshooting?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRecord the MOD number, transmitter supply voltage, loop current, analog input scaling, and normal operating readings. Include alarm thresholds and the observed response to a verified Not OK condition.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: How can a buyer determine whether this transmitter suits an existing control cabinet?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the DIN mounting arrangement, available DC supply, input resistance, and two-wire 4–20 mA interface. Check the required engineering-unit range and the receiving input's handling of signals below 3.6 mA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: When should a technician adjust zero and span instead of replacing the transmitter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAdjustments may be appropriate when an approved calibration test identifies a correctable offset or scaling error. Verify the probe system, MOD number, supply voltage, and loop configuration first. Replace components only after testing identifies a fault and approved procedures permit the change.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRequest Pricing and Technical Confirmation\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eContact Global PLC Spare HUB to request a quotation for the \u003cstrong\u003e\u003cspan style=\"color: #2e74b5;\"\u003eBently Nevada 990-08-XX-03-00\u003c\/span\u003e\u003c\/strong\u003e. Provide the required MOD number, quantity, and intended application to help verify system compatibility before purchase.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures_8ba4a14f-832f-4772-a484-c09fd48b12f9.png?v=1784875470\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013971796150,"sku":"990-08-XX-03-00","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_5_1ccb7293-c5e2-4bc9-83a3-eb4bf01d7f67.jpg?v=1792463940"},{"product_id":"990-10-50-01-00-series-990-machinery-vibration-transmitter-bently-nevada","title":"990-10-50-01-00 Series 990 Machinery Vibration Transmitter Bently Nevada","description":"\u003ch3\u003e\u003cstrong\u003eBently Nevada \u003cstrong\u003e990-10-50-01-00\u003c\/strong\u003e Vibration Transmitter Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Bently Nevada \u003cstrong\u003e990-10-50-01-00\u003c\/strong\u003e acts as a compact, loop-powered vibration monitoring transmitter designed to convert raw proximity probe signals into a proportional 4-20 mA analog output. As a staple model in the Bently Nevada \u003cstrong\u003e990\u003c\/strong\u003e Series, this instrument interfaces directly with 3300 NSv probes to track radial vibration on small to medium industrial machinery. Global PLC Spare HUB's Insight highlights this transmitter for its reliable DIN-rail installation footprint, rapid Not-OK signal defeat response, and essential loop diagnostics in non-hazardous or Zone 2 locations.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eModel \u003cstrong\u003e990-10-50-01-00\u003c\/strong\u003e Configuration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Bently Nevada\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Series:\u003c\/strong\u003e Bently Nevada \u003cstrong\u003e990\u003c\/strong\u003e Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Part Number:\u003c\/strong\u003e \u003cstrong\u003e990-10-50-01-00\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-Scale Option (10):\u003c\/strong\u003e 0 to 10 mils pp (0 to 250 micrometers pp) measurement range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Length Option (50):\u003c\/strong\u003e 5.0 meters (16.4 feet) total system cable configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Option (01):\u003c\/strong\u003e 35 mm DIN rail clips for fast cabinet installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgency Approval Option (00):\u003c\/strong\u003e Standard non-hazardous \/ general purpose specification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in U.S.A.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications \u0026amp; Performance Parameters\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Signal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAccepts one non-contacting 3300 NSv Proximity Probe and matching extension cable.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Power Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRequires +12 to +35 Vdc input applied across the transmitter terminals.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Loop Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mAdc over specified full-scale range in a standard 2-wire loop configuration.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLoop Accuracy \u0026amp; Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWithin ±1.5% loop accuracy; maximum loop resistance up to 1,000 ohms including cable at 35 Vdc.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5 Hz to 6,000 Hz (+0, -3 dB) frequency transmission range.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLightweight compact design weighing approximately 0.43 kg (0.9 lbm).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eDiagnostic Capabilities \u0026amp; System Safety\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstantaneous Not-OK signal defeat forces output below 3.6 mA within 100 microseconds upon sensor faults.\u003c\/li\u003e\n\u003cli\u003eNon-interacting external zero and span potentiometers allow quick field calibration adjustments.\u003c\/li\u003e\n\u003cli\u003eBuilt-in current limiting restricts loop current to 23 mA typical during electrical overloads.\u003c\/li\u003e\n\u003cli\u003eProximitor sensor BNC output supports temporary diagnostic data collection with up to 3 meters cable distance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatible Equipment \u0026amp; Application Environments\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBently Nevada 3300 NSv non-contacting proximity probes and extension cables.\u003c\/li\u003e\n\u003cli\u003eIndustrial centrifugal air compressors, pumps, and small steam turbines.\u003c\/li\u003e\n\u003cli\u003eDIN rail control cabinets in plant balance-of-plant (BOP) monitoring enclosures.\u003c\/li\u003e\n\u003cli\u003eNon-hazardous and Zone 2 \/ Division 2 hazardous plant locations using proper barriers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003ePackaging, Warranty \u0026amp; Logistics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSecure factory cushioning designed to prevent electronic component damage during transit.\u003c\/li\u003e\n\u003cli\u003eStandard 12-month manufacturing warranty covering component and assembly defects.\u003c\/li\u003e\n\u003cli\u003eRapid 24-48 hour order dispatch window for immediate project deployment.\u003c\/li\u003e\n\u003cli\u003eGlobal delivery services fulfilled via premier logistics carriers including FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the primary function of the \u003cstrong\u003e990-10-50-01-00\u003c\/strong\u003e vibration transmitter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt processes signals from a 3300 NSv proximity probe to output a direct 4-20 mA loop current proportional to shaft vibration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat proper gap distance must be maintained between the probe tip and target?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe probe must be gapped strictly between 0.5 and 1.75 mm (20 and 55 mils) from the target surface to ensure accurate full-scale range performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the transmitter behave when a sensor fault or Not-OK condition occurs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe signal output drops below 3.6 mA within 100 microseconds to alert the control system of a loop anomaly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat factors should engineers evaluate when selecting loop resistance limits?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEnsure total resistance—including wire harness and control card impedance—does not exceed 1,000 ohms when operating at 35 Vdc power input.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this transmitter be mounted directly inside standard control panel racks?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, it features convenient 35 mm DIN rail clips designed for efficient snap-on cabinet installations.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures_8ba4a14f-832f-4772-a484-c09fd48b12f9.png?v=1784875470\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013971828918,"sku":"990-10-50-01-00","price":185.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_6_1c55276f-8b56-4d16-bca0-f21228d0a92b.jpg?v=1787731136"},{"product_id":"990-10-50-02-00-transmitter-bently-nevada-990-vibration-monitoring-module","title":"990-10-50-02-00 Transmitter Bently Nevada 990 Vibration Monitoring Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eGlobal PLC Spare HUB's Insight: Industrial machinery monitoring requires converting raw proximity probe signals into reliable 4-20 mA control loops without complex rack systems. The \u003cb\u003eBently Nevada\u003c\/b\u003e \u003cb\u003e990-10-50-02-00\u003c\/b\u003e from the robust \u003cb\u003e990\u003c\/b\u003e series provides a compact, field-mounted solution for continuous casing and shaft vibration tracking. Based on our practical engineering experience, this standalone vibration transmitter eliminates the need for full-rack monitors on smaller balance-of-plant equipment, directly integrating with standard PLC or DCS analog input cards while maintaining high signal fidelity.\u003c\/p\u003e\n\u003ch3\u003ePart Configuration Breakdown\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003e990\u003c\/b\u003e - Base Model: \u003cb\u003e990 Vibration Transmitter\u003c\/b\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eFull-scale Option\u003c\/b\u003e: \u003cb\u003e10\u003c\/b\u003e = 0-10 mils pp (0-250 μm pp) range configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSystem Length Option\u003c\/b\u003e: \u003cb\u003e50\u003c\/b\u003e = 5.0 meters (16.4 feet) total system length\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMounting Option\u003c\/b\u003e: \u003cb\u003e02\u003c\/b\u003e = Bulkhead screws for secure mechanical installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eAgency Approval Option\u003c\/b\u003e: \u003cb\u003e00\u003c\/b\u003e = Not required \/ Standard commercial tier\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth style=\"text-align: left;\"\u003eParameter Metric\u003c\/th\u003e\n\u003cth style=\"text-align: left;\"\u003eOperating Value\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eBrand\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cb\u003eBently Nevada\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eModel \/ Part Number\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cb\u003e990-10-50-02-00\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cb\u003eSeries \/ Type\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cb\u003e990\u003c\/b\u003e \/ \u003cb\u003eVibration Transmitter\u003c\/b\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Compatibility\u003c\/td\u003e\n\u003ctd\u003e1 non-contacting 3300 NSv Proximity Probe and extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 Vdc input at transmitter terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Output\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mAdc (2-wire configuration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop Accuracy\u003c\/td\u003e\n\u003ctd\u003eWithin ±1.5% over specified full-scale range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e5 Hz to 6,000 Hz (+0, -3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1,000 Ω including cable at 35 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Weight\u003c\/td\u003e\n\u003ctd\u003e0.43 kg (0.9 lbm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSupply Chain and Commercial Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCondition: Brand new and original in factory packaging.\u003c\/li\u003e\n\u003cli\u003eFactory Warranty: Comprehensive 12-month coverage.\u003c\/li\u003e\n\u003cli\u003eShipping Carriers: FedEx, UPS, DHL.\u003c\/li\u003e\n\u003cli\u003eFulfillment Window: Fast dispatch within 24 to 48 hours of order clearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTarget Equipment and Application Scenarios\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBalance-of-plant centrifugal pumps and auxiliary motor drives.\u003c\/li\u003e\n\u003cli\u003eCompact industrial air compressors and small blower systems.\u003c\/li\u003e\n\u003cli\u003eIndustrial gearboxes requiring direct 4-20 mA loop vibration feedback.\u003c\/li\u003e\n\u003cli\u003eSkid-mounted package units where rack space is restricted.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDelivers rapid Not OK signal defeat (under 3.6 mA within 100 μs) during sensor open-circuit faults.\u003c\/li\u003e\n\u003cli\u003eTracks broad frequency vibrations from 5 Hz to 6 kHz for early fault identification.\u003c\/li\u003e\n\u003cli\u003eProvides local BNC connector access for temporary diagnostic data collection up to 3 meters.\u003c\/li\u003e\n\u003cli\u003eFacilitates precise non-interacting external zero and span calibration adjustments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eWhy does the 990-10-50-02-00 require specific probe gap spacing between 0.5 and 1.75 mm?\u003c\/b\u003e\u003cbr\u003eMaintaining the target gap within 20 to 55 mils ensures the linear output curve matches the 0-10 mils full-scale range without clipping the 4-20 mA loop output.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eHow does the Not OK signal defeat function protect control systems?\u003c\/b\u003e\u003cbr\u003eIf a probe or cable fault occurs, the transmitter drops output current below 3.6 mA within 100 microseconds, alerting the DCS to ignore invalid process data instantly.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWhat is the maximum allowable cable length for the BNC test output?\u003c\/b\u003e\u003cbr\u003eThe BNC connector supports diagnostic leadwire lengths up to 3 meters (10 feet) for temporary data collectors without introducing heavy signal attenuation.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eCan technicians adjust zero and span settings independently?\u003c\/b\u003e\u003cbr\u003eYes, the transmitter features non-interacting external adjustments, allowing field engineers to fine-tune calibration without affecting the cross-parameter scaling.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWhy is loop resistance limitation critical when powering via +35 Vdc?\u003c\/b\u003e\u003cbr\u003eThe total loop impedance must not exceed 1,000 ohms to guarantee sufficient voltage drop across the transmitter terminals for stable 2-wire loop operation.\u003c\/p\u003e\n\u003ch3\u003eSelection Guide and Technical Comparison\u003c\/h3\u003e\n\u003cp\u003eChoosing the correct full-scale option depends on the expected vibration displacement amplitude of your machinery. Compare the \u003cb\u003eBently Nevada\u003c\/b\u003e \u003cb\u003e990-10-50-02-00\u003c\/b\u003e with alternative configurations to match your monitoring requirements.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.plcsparehub.com\/products\/990-08-50-02-cn-bently-nevada-vibration-transmitter-0-8-mils-range\"\u003e990-08-50-02-CN\u003c\/a\u003e: Features a 0-8 mils pp range configuration with Chinese certification markings, suitable for installations requiring strict local compliance metrics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures_8ba4a14f-832f-4772-a484-c09fd48b12f9.png?v=1784875470\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013971861686,"sku":"990-10-50-02-00","price":185.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_2_fd7825a2-b791-4b2a-b63f-22c84d270d02.jpg?v=1785312300"},{"product_id":"991-06-70-01-05-probe-vibration-transmitter-by-bently-nevada","title":"991-06-70-01-05 Probe Vibration Transmitter by Bently Nevada","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e991-06-70-01-05\u003c\/strong\u003e is an advanced thrust vibration transmitter engineered by Bently Nevada to provide continuous, direct monitoring of axial machine displacement. Designed to interface seamlessly with 3300 NSv proximity probes and extension cables, this unit converts raw transducer signals into a proportional 4-20 mA current loop. Industrial automation professionals rely on the \u003cstrong\u003e991-06-70-01-05\u003c\/strong\u003e for reliable machinery protection, streamlined PLC integration, and early detection of thrust bearing wear in critical rotating equipment.\u003c\/p\u003e\n\u003ch3\u003ePart Number Configuration Breakdown\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Model (991):\u003c\/strong\u003e Thrust Vibration Transmitter Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-Scale Option (-06):\u003c\/strong\u003e 0.6-0-0.6 mm linear measurement range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Length Option (-70):\u003c\/strong\u003e 7.0 meters (23.0 feet) total probe and cable length compatibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Option (01):\u003c\/strong\u003e 35 mm DIN-rail mounting clips for secure panel installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgency Approval Option (05):\u003c\/strong\u003e CSA Division 2, ATEX Zone 0, ATEX Zone 2, and ABS maritime approvals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Bently Nevada (Made in U.S.A.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 991 Thrust Transmitter Platform\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e \u003cstrong\u003e991-06-70-01-05\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Probe Vibration \/ Thrust Transmitter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Compatibility:\u003c\/strong\u003e Accepts one (1) non-contacting 3300 NSv proximity probe and extension cable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply Requirements:\u003c\/strong\u003e +12 to +35 Vdc input at transmitter terminals (2-wire configuration)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Output:\u003c\/strong\u003e 4 to 20 mAdc proportional to the specified full-scale range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Accuracy:\u003c\/strong\u003e Within ±1.5% typical over specified range (tested across 250 ohm loop resistance)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Loop Resistance:\u003c\/strong\u003e 1,000 ohms including cable at 35 Vdc\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Limiting:\u003c\/strong\u003e 23 mA typical protection threshold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot OK \/ Signal Defeat:\u003c\/strong\u003e Drops output below 3.6 mA within 100 µs upon fault detection; restores within 0.1 seconds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmitter Weight:\u003c\/strong\u003e 0.43 kg (0.9 lbm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -35°C to +85°C (-31°F to +185°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -51°C to +100°C (-60°F to +212°F)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation \u0026amp; Integration Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN-Rail Mounting:\u003c\/strong\u003e Mount the transmitter securely onto standard 35 mm DIN rails inside your local instrument enclosure or control cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Wiring:\u003c\/strong\u003e Connect the 2-wire 4-20 mA current loop using properly shielded instrumentation cabling, ensuring total loop resistance remains under 1,000 ohms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Input:\u003c\/strong\u003e Supply a stable DC voltage source ranging from +12 to +35 Vdc directly to the transmitter terminal blocks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransducer Connection:\u003c\/strong\u003e Link the compatible 3300 NSv proximity probe system directly into the transmitter input stage while maintaining correct cable length matching (-70 configuration).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommissioning \u0026amp; Maintenance Ease\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero and Span Adjustments:\u003c\/strong\u003e Utilize the built-in non-interacting external adjustment screws to calibrate zero and span parameters precisely during loop checkout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus Defeat Monitoring:\u003c\/strong\u003e Leverage the automatic Not OK signal defeat feature, which instantly drives loop output below 3.6 mA to indicate sensor faults or disconnected wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Panel Access:\u003c\/strong\u003e Compact 0.43 kg footprint and clip-on mounting simplify replacement and physical inspection procedures during scheduled plant turnarounds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Certifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor Compatibility:\u003c\/strong\u003e Optimized exclusively for 3300 NSv proximity probes and associated extension cables.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Integration:\u003c\/strong\u003e Interfaces directly with standard PLC, DCS, or SCADA analog input cards accepting 4-20 mA current loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Approvals:\u003c\/strong\u003e Certified safe for hazardous locations under CSA Division 2, ATEX Zone 0 and Zone 2, alongside official ABS maritime compliance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePacking List \u0026amp; Warranty Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePacking List:\u003c\/strong\u003e One (1) \u003cstrong\u003e991-06-70-01-05\u003c\/strong\u003e Vibration Transmitter, 35 mm DIN-rail mounting clips, and compliance documentation sheet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Terms:\u003c\/strong\u003e Fully covered by a comprehensive 12-month warranty ensuring complete operational reliability from the date of purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping \u0026amp; Logistics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCourier Network:\u003c\/strong\u003e Secure, expedited international shipping handled through trusted global carriers including FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFulfillment Window:\u003c\/strong\u003e Orders are rigorously verified, securely packaged, and dispatched within 24-48 hours to prevent costly project delays.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Application Scenes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteam \u0026amp; Gas Turbines:\u003c\/strong\u003e Monitoring continuous axial shaft displacement and thrust bearing wear to prevent catastrophic internal rub damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge Centrifugal Compressors:\u003c\/strong\u003e Tracking rotor end-float and axial position in high-pressure industrial gas compression trains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine Propulsion Systems:\u003c\/strong\u003e Overseeing thrust load dynamics on shipboard drive shafts under certified ABS marine operational conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB Insight \u0026amp; Field Experience\u003c\/h3\u003e\n\u003cp\u003eWhen deploying loop-powered transmitters like the \u003cstrong\u003e991-06-70-01-05\u003c\/strong\u003e over long cable runs, voltage drop calculation is critical. Field experience indicates that if total loop resistance approaches the 1,000-ohm limit while using a lower supply voltage (e.g., +12 Vdc), current loop saturation can occur. Our engineering team recommends supplying at least +24 Vdc to +35 Vdc to the loop terminal when interfacing with distant control systems to guarantee full 23 mA current-limiting headroom and stable signal transmission.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the primary function of the Not OK \/ Signal Defeat feature on this transmitter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Not OK feature automatically drives the 4-20 mA output signal below 3.6 mA within 100 microseconds if a sensor fault, open circuit, or power disruption occurs, alerting the control system to a transducer problem.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 991-06-70-01-05 be powered using a standard 12V DC power source?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the unit accepts an input voltage ranging from +12 to +35 Vdc, though higher supply voltages are recommended if your total loop wiring resistance is extensive.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat proximity probe series is required to feed this thrust transmitter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis transmitter is specifically engineered to accept input signals from a single 3300 NSv non-contacting proximity probe and matching extension cable system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow are zero and span calibrations performed on site?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCalibration is performed using non-interacting external adjustment potentiometers located on the transmitter housing for quick, accurate loop tuning without internal board access.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat key selection factors should I evaluate when replacing an existing vibration transmitter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlways verify your required full-scale measurement range (such as -06 for 0.6-0-0.6 mm), system cable length configuration, mounting style (DIN-rail clips), and hazardous area approval ratings to match your plant specifications.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_524659a5-cbca-478a-b812-374d1b70ec8e.png?v=1784875246\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013971959990,"sku":"991-06-70-01-05","price":168.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_2_b998b6a1-04c2-4dcb-8fe3-9801f28e4a1b.jpg?v=1786515942"},{"product_id":"991-06-70-02-00-bently-nevada-transmitter-991-thrust-module","title":"991-06-70-02-00 Bently Nevada Transmitter 991 Thrust Module","description":"\u003ch3\u003e\u003cstrong\u003eEngineering Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eBently Nevada\u003c\/span\u003e \u003cspan style=\"color: #d9534f;\"\u003e991-06-70-02-00\u003c\/span\u003e\u003c\/strong\u003e functions as a loop-powered axial position signal conditioning module belonging to the high-reliability \u003cstrong\u003e\u003cspan style=\"color: #d9534f;\"\u003e991 Series\u003c\/span\u003e\u003c\/strong\u003e thrust transmitter platform. Designed to process proximity sensor telemetry without requiring an external Proximitor driver, this 2-wire unit converts mechanical shaft displacement directly into a calibrated 4 to 20 mA DC current loop signal for direct PLC, DCS, or SCADA integration.\u003c\/p\u003e\n\u003cp\u003eCapable of mounting on standard 35mm DIN rails or cabinet bulkheads, the \u003cstrong\u003e\u003cspan style=\"color: #d9534f;\"\u003e991-06-70-02-00\u003c\/span\u003e\u003c\/strong\u003e operates with a dedicated 3300 NSv proximity probe and extension cable across a total 7.0-meter system length. Built-in non-interacting zero\/span adjustments and high-speed \"Not OK\" fault defeat logic protect plant machinery against false trips and unmonitored axial rotor movement.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePart Number Configuration Breakdown\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Part Number: \u003cspan style=\"color: #d9534f;\"\u003e991\u003c\/span\u003e\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eDesignation: 991 Thrust \/ Axial Position Vibration Transmitter Module.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-scale Option: -06\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eDesignation: 0.6-0-0.6 mm (suitable for 25-0-25 mils linear axial measurement range).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Length Option: -70\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eDesignation: 7.0 meters (23.0 feet) total electrical system length (probe plus extension cable).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Option: -02\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eDesignation: Bulkhead screw mounting hardware (with standard DIN rail adapter provision).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgency Approval Option: -00\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eDesignation: Standard uncertified hardware version (Agency approvals not required).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer Brand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eBently Nevada\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull Part Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan style=\"color: #d9534f;\"\u003e991-06-70-02-00\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan style=\"color: #d9534f;\"\u003e991 Series \/ 991 Transmitter\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Function\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-Wire Axial Position \/ Thrust Vibration Transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Input Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAccepts 1 non-contacting 3300 NSv proximity probe and extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull Scale Measurement Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.6-0-0.6 mm (Linear proximity range: 0.25 to 1.65 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Electrical Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.0 meters (23.0 feet) total loop length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog Output Signal\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA DC 2-wire current loop (Sourced loop supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Power Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 VDC continuous input at module terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLoop Signal Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWithin ±1.5% of specified full-scale range (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Loop Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,000 Ω (including line wiring resistance at 35 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current Limit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e23 mA typical current cap under fault overload\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNot OK \/ Signal Defeat Logic\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOutput drops below 3.6 mA within 100 µs on fault (restores in 0.1 s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature Window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-35°C to +85°C (-31°F to +185°F) field transmitter limit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhysical Mass\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.43 kg (0.9 lbs) net weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eTarget Equipment and Industrial Application Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #d9534f;\"\u003e991-06-70-02-00\u003c\/span\u003e\u003c\/strong\u003e transmitter provides continuous axial protection across critical plant rotating assets:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSteam turbine high-pressure axial rotor position monitoring.\u003c\/li\u003e\n\u003cli\u003eMultistage boiler feed pump thrust bearing wear detection.\u003c\/li\u003e\n\u003cli\u003eHigh-speed centrifugal gas compressor rotor displacement loops.\u003c\/li\u003e\n\u003cli\u003eIndustrial fan and blower axial shaft shift monitoring in balance-of-plant automation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eAdvanced Fault Diagnostics and Protection Capabilities\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #d9534f;\"\u003e991 Series\u003c\/span\u003e\u003c\/strong\u003e module includes specialized diagnostics to protect control loops:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstantaneous \"Not OK\" fault response drops signal to under 3.6 mA within 100 microseconds during probe cable open\/short conditions.\u003c\/li\u003e\n\u003cli\u003eBuffered raw proximity output test terminal for connecting portable vibration analyzers during active operation.\u003c\/li\u003e\n\u003cli\u003eNon-interacting zero and span adjustment pots simplify zero-point shaft alignment in field enclosures.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eDuring a balance-of-plant upgrade on a power plant cooling tower pump, engineers experienced nuisance trips due to noisy analog input cards on their legacy DCS. The site lacked dedicated rack monitors and needed direct 4-20 mA telemetry into the PLC. By installing the \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003eBently Nevada\u003c\/span\u003e \u003cspan style=\"color: #d9534f;\"\u003e991-06-70-02-00\u003c\/span\u003e\u003c\/strong\u003e paired with a 7-meter 3300 NSv probe system, we delivered a clean 4-20 mA axial signal straight to the control system. Its fast 100 µs Not-OK circuit instantly flagged a loose terminal screw during commissioning before it could trigger an unnecessary automated plant trip.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal Shipping and Warranty Terms\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWe supply factory-grade machinery protection components under reliable commercial terms:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Month Coverage:\u003c\/strong\u003e Backed by a comprehensive \u003cstrong\u003e12-month factory warranty\u003c\/strong\u003e effective from receipt date.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-48 Hour Dispatch:\u003c\/strong\u003e In-stock hardware undergoes physical inspection and ships within \u003cstrong\u003e24 to 48 hours\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpress Couriers:\u003c\/strong\u003e Fast international air shipment available via premium carriers: \u003cstrong\u003eFedEx\u003c\/strong\u003e, \u003cstrong\u003eUPS\u003c\/strong\u003e, and \u003cstrong\u003eDHL\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSelection and Commissioning Procurement Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eVerify these critical system factors before finalizing purchase of the \u003cstrong\u003e\u003cspan style=\"color: #d9534f;\"\u003e991-06-70-02-00\u003c\/span\u003e\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe System Pairing:\u003c\/strong\u003e Ensure your field probe and extension cable total exactly 7.0 meters and belong to the 3300 NSv series; pairing with 5m or 9m systems causes severe scale inaccuracy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Direction:\u003c\/strong\u003e Confirm that your thrust span matches the 0.6-0-0.6 mm option (centered zero position) for bi-directional axial rotor float detection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Powering:\u003c\/strong\u003e Verify your loop power supply delivers at least +12 to +35 VDC across the terminal block, factoring in total loop resistance up to 1,000 Ω.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion 1: What is the main advantage of using a 991 series transmitter over a traditional Proximitor sensor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 991 transmitter outputs a direct 4-20 mA loop current proportional to axial position, allowing direct wiring into PLC or DCS analog inputs without needing a specialized machinery monitoring rack system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion 2: How does the \"Not OK\" feature on the \u003cspan style=\"color: #d9534f;\"\u003e991-06-70-02-00\u003c\/span\u003e interact with a connected PLC system?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf the proximity probe cable breaks or detaches, the transmitter forces its output below 3.6 mA in under 100 microseconds. The PLC detects this low current as a transducer fault rather than a false high-thrust shutdown.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion 3: Can I connect a standard 3300 XL 8mm probe to the \u003cspan style=\"color: #d9534f;\"\u003e991-06-70-02-00\u003c\/span\u003e transmitter module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. This specific transmitter configuration is factory-calibrated exclusively for 3300 NSv proximity probes and matching 7.0-meter total system length cables.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion 4: Do the zero and span adjustments on the front panel affect each other during calibration?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The 991 series features non-interacting zero and span potentiometer controls, allowing independent zeroing without shifting the full-scale span setting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion 5: What causes the 4-20 mA signal on a thrust transmitter to lock at maximum scale (over 20 mA)?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis typically occurs when the mechanical gap between the probe tip and target collar exceeds the maximum linear range (1.65 mm) or when the probe cable suffers from severe grounding noise or loose terminal connections.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_524659a5-cbca-478a-b812-374d1b70ec8e.png?v=1784875246\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013972025526,"sku":"991-06-70-02-00","price":168.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_5_248b2417-9ab7-4dde-b43b-03bb73e53d0f.jpg?v=1785835526"},{"product_id":"bently-nevada-991-25-70-02-00-vibration-transmitter-fast-shipping","title":"Bently Nevada 991-25-70-02-00 Vibration Transmitter - Fast Shipping","description":"\u003ch3\u003e991-25-70-02-00 Bently Nevada 991 Thrust Transmitter 991-25-70-02-00 - In Stock\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eGlobal PLC Spare HUB Review\u003c\/strong\u003e analyzes the \u003cstrong\u003e\u003cstrong\u003e991-25-70-02-00\u003c\/strong\u003e\u003c\/strong\u003e device as a compact, loop-powered signal conditioner engineered for industrial machine health loops. \u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e indicates that integrating the 3300 NSv probe input directly into a 4–20 mA output stream streamlines PLC and DCS integration without needing a separate Proximitor rack. Maintenance engineers deploy this transmitter to achieve reliable axial position monitoring on critical turbomachinery.\u003c\/p\u003e\n\u003ch3\u003ePart Number Configuration Hierarchy\u003c\/h3\u003e\n\u003cpre\u003e991 Series Thrust Transmitter Breakdown:\n├── Base Model Identifier: 991 (Thrust Transmitter Unit)\n├── Full-scale Range Option: -25 (25-0-25 mils \/ 0.6-0-0.6 mm scale)\n├── System Length Option: -70 (7.0 meters \/ 23.0 feet total loop length)\n├── Mechanical Mounting Option: 02 (DIN rail mounting via bulkhead screws)\n└── Agency Approval Option: -00 (Standard configuration, not required)\n\u003c\/pre\u003e\n\u003ch3\u003eCore Technical Specifications Table\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTechnical Parameter\u003c\/th\u003e\n\u003cth\u003eTransmitter Specification Details\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand \u0026amp; Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e\u003cstrong\u003eBently Nevada\u003c\/strong\u003e\u003c\/strong\u003e \u003cstrong\u003e\u003cstrong\u003e991-25-70-02-00\u003c\/strong\u003e\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type \u0026amp; Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProximity Vibration Transmitter \/ \u003cstrong\u003e\u003cstrong\u003e991 Series\u003c\/strong\u003e\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Power Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 Vdc input applied directly at transmitter terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Loop Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mAdc across specified full-scale span in 2-wire setup\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLoop Accuracy \u0026amp; Limit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWithin ±1.5% loop accuracy; max loop resistance up to $1,000\\ \\Omega$ at 35 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironmental Operating Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-35°C to +85°C (-31°F to +185°F) ambient temperature tolerance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMachinery Suitability and Diagnostic Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Equipment\u003c\/strong\u003e: Integrated into control panels monitoring steam turbines, hydroelectric generators, heavy-duty axial compressors, and large industrial pumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic Focus\u003c\/strong\u003e: Tracks continuous axial rotor displacement (thrust wear), detects imminent thrust bearing failure, and prevents catastrophic rub events by triggering rapid loop alarms during abnormal rotor migration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSupply Chain, Fulfillment, and Warranty Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFulfillment Logistics\u003c\/strong\u003e: Rapid dispatch within 24 to 48 hours utilizing premier global couriers including FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Protection\u003c\/strong\u003e: Fully backed by an exclusive 12-month replacement and performance guarantee from \u003cstrong\u003eGlobal PLC Spare HUB\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSelection Guidance and Variant Comparison\u003c\/h3\u003e\n\u003cp\u003eWhen specifying transmitter configurations for retrofits or new panel builds, verify your enclosure mounting and connection terminal layouts. For an alternative configuration featuring a different mounting style and agency certification tier, review the companion option below:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003ca href=\"https:\/\/www.plcsparehub.com\/products\/bently-nevada-991-25-70-01-01-thrust-transmitter-4-20ma\"\u003e991-25-70-01-01\u003c\/a\u003e\u003c\/strong\u003e: Incorporates alternative installation hardware and hazardous area approval ratings. Always cross-reference your cabinet layout drawings with the exact terminal configuration before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch3\u003eHow does the 991-25-70-02-00 transmitter handle sensor fault conditions?\u003c\/h3\u003e\n\u003cp\u003eWhen a \"Not OK\" condition occurs—such as a severed probe cable or open circuit—the signal output drops below 3.6 mA within 100 microseconds to alert the host control system immediately.\u003c\/p\u003e\n\u003ch3\u003eWhat is the maximum allowable loop resistance when powering the unit at 35 Vdc?\u003c\/h3\u003e\n\u003cp\u003eThe transmitter supports a maximum loop resistance of up to $1,000\\ \\Omega$ (including field wiring) when supplied with a 35 Vdc power source.\u003c\/p\u003e\n\u003ch3\u003eCan I calibrate zero and span adjustments independently in the field?\u003c\/h3\u003e\n\u003cp\u003eYes. The transmitter features non-interacting external potentiometers that allow technicians to adjust zero and span settings cleanly during periodic loop calibrations.\u003c\/p\u003e\n\u003ch3\u003eWhy does this unit specifically require a 3300 NSv proximity probe input?\u003c\/h3\u003e\n\u003cp\u003eThe internal signal conditioning circuitry is optimized for the sensitivity profile of non-contacting 3300 NSv probes, ensuring accurate linear measurements across smaller target displacement spans.\u003c\/p\u003e\n\u003ch3\u003eWhat precautions are necessary when mounting the unit on a DIN rail?\u003c\/h3\u003e\n\u003cp\u003eEnsure the enclosure maintains proper ventilation to keep operating temperatures between -35°C and +85°C, preventing thermal drift in the 4–20 mA current loop output.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_524659a5-cbca-478a-b812-374d1b70ec8e.png?v=1784875246\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013972058294,"sku":"991-25-70-02-00","price":168.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_5.jpg?v=1785312288"},{"product_id":"991-06-50-02-01-bently-nevada-thrust-vibration-transmitter-module-unit","title":"991-06-50-02-01 Bently Nevada Thrust Vibration Transmitter Module Unit","description":"\u003ch3\u003eProduct Overview \u0026amp; Configuration Breakdown\u003c\/h3\u003e\n\u003cp\u003eManufacturer: \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eBently Nevada\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eModel: \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e991-06-50-02-01\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSeries: \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e991 Thrust Transmitter Module\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eCondition: Factory New \u0026amp; Original Packaging\u003c\/p\u003e\n\u003cp\u003eFulfillment: 24-48 Hour Express Dispatch via FedEx, UPS, and DHL\u003c\/p\u003e\n\u003cp\u003eWarranty: Comprehensive 12-Month Factory Warranty\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConfiguration Breakdown Code Analysis:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBase Model: \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e991\u003c\/strong\u003e\u003c\/span\u003e - Thrust Transmitter Unit\u003c\/li\u003e\n\u003cli\u003eFull-scale Option: \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e06\u003c\/strong\u003e\u003c\/span\u003e - 0.6-0-0.6 mm measurement scale\u003c\/li\u003e\n\u003cli\u003eSystem Length Option: \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e50\u003c\/strong\u003e\u003c\/span\u003e - 5.0 meters (16.4 feet) system calibration\u003c\/li\u003e\n\u003cli\u003eMounting Option: \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e02\u003c\/strong\u003e\u003c\/span\u003e - Bulkhead screw mounting hardware\u003c\/li\u003e\n\u003cli\u003eAgency Approval Option: \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e01\u003c\/strong\u003e\u003c\/span\u003e - CSA Division 2 hazardous area certification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight:\u003c\/strong\u003e Direct-mount loop-powered transmitters eliminate the need for full rack enclosures in compact skid packages. The \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e991-06-50-02-01\u003c\/strong\u003e\u003c\/span\u003e integrates signal conditioning directly into field junction boxes, converting probe gaps straight into standard 4-20 mA control loops with robust Not OK fault protection.\u003c\/p\u003e\n\u003ch3\u003eAdvanced Technical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInput Channel: Accepts 1 non-contacting 3300 NSv proximity probe and extension cable assembly\u003c\/li\u003e\n\u003cli\u003eSignal Output: Two-wire 4 to 20 mAdc proportional to specified full-scale range\u003c\/li\u003e\n\u003cli\u003eLinear Range: 0.25 to 1.65 mm for proximity output, matching 0.6-0-0.6 mm current loops\u003c\/li\u003e\n\u003cli\u003eLoop Accuracy: Within plus or minus 1.5 percent over full scale across a 250 ohm resistance\u003c\/li\u003e\n\u003cli\u003ePower Requirements: External DC supply requiring +12 to +35 Vdc input at transmitter terminals\u003c\/li\u003e\n\u003cli\u003eMaximum Loop Resistance: Up to 1000 ohms including cabling at 35 Vdc operational voltage\u003c\/li\u003e\n\u003cli\u003eFault Indication: Drops below 3.6 mA within 100 microseconds upon detecting a Not OK condition\u003c\/li\u003e\n\u003cli\u003eEnvironmental Limits: Operating temperature range from -35°C to +85°C (-31°F to +185°F)\u003c\/li\u003e\n\u003cli\u003ePhysical Weight: Lightweight industrial footprint of 0.43 kg (0.9 lbm) configured for DIN rail or bulkhead mounting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Selection and Comparative Analysis\u003c\/h3\u003e\n\u003cp\u003eWhen selecting between thrust transmitters for rotating machinery protection, engineers must evaluate system length parameters and hazardous area approvals. For alternative configurations within the same product family, review the \u003ca href=\"https:\/\/www.plcsparehub.com\/products\/991-06-70-02-00-bently-nevada-transmitter-991-thrust-module\" style=\"color: #0056b3; text-decoration: underline;\"\u003e\u003cstrong\u003e991-06-70-02-00\u003c\/strong\u003e\u003c\/a\u003e model variant, which utilizes a 7.0-meter system length option instead of the 5.0-meter setup found in the \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e991-06-50-02-01\u003c\/strong\u003e\u003c\/span\u003e. Ensure your probe cable length matches the transmitter system length code to maintain loop calibration integrity.\u003c\/p\u003e\n\u003ch3\u003eIndustrial Application Scenarios \u0026amp; Diagnostic Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTarget Machinery: Axial thrust monitoring on steam turbines, gas expanders, centrifugal pumps, and heavy industrial compressors.\u003c\/li\u003e\n\u003cli\u003eDiagnostic Function: Tracks continuous rotor axial displacement to prevent catastrophic internal rubbing against thrust bearing pads.\u003c\/li\u003e\n\u003cli\u003eFailure Detection: Rapidly identifies thrust collar degradation, excessive load shifts, and sudden lubrication film breakdowns via automated 3.6 mA loop dropouts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What causes the 991-06-50-02-01 output to drop below 3.6 mA during operation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The transmitter automatically triggers a Not OK status and pulls current below 3.6 mA if it detects a severed probe cable, disconnected power supply, or internal transducer fault.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this unit be mounted directly inside a standard field junction box?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module supports bulkhead screw mounting or standard DIN rail installation inside local weatherproof enclosures near the machine train.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the system length option impact field calibration?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Option 50 is calibrated specifically for a 5.0-meter total probe and extension cable length. Mixing different cable lengths will introduce scale factor errors unless recalibrated.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What field wiring specification is required for the 4-20 mA current loop?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Use twisted shielded pair cabling connected to a regulated +12 to +35 Vdc power source, ensuring total loop resistance remains under 1000 ohms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are zero and span adjustments interactive on this transmitter model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, the module features non-interacting external potentiometers, allowing technicians to calibrate zero and span settings independently during routine maintenance checks.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_524659a5-cbca-478a-b812-374d1b70ec8e.png?v=1784875246\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013972123830,"sku":"991-06-50-02-01","price":115.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_2_6f8438a7-679e-4861-b17e-112c2572a54f.jpg?v=1786344557"},{"product_id":"991-06-50-03-00-bently-nevada-probe-vibration-transmitter-din-mount","title":"991-06-50-03-00 Bently Nevada Probe Vibration Transmitter DIN Mount","description":"\u003ch3\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e991-06-50-03-00 Bently Nevada\u003c\/strong\u003e\u003c\/span\u003e Thrust Vibration Transmitter is a heavy-duty, DIN rail-mounted field transducer designed to integrate continuous axial position and thrust wear monitoring directly into industrial control loops. Configured for a full-scale axial displacement range of 0.6–0–0.6 mm, this unit interfaces with a 3300 NSv eddy current proximity probe and extension cable assembly (5.0-meter system length). Operating on a standard 2-wire, 24V DC loop power configuration (+12 to +35 Vdc input), it conditions non-contact probe signals into an isolated proportional 4-20mA current loop for direct connection to PLCs, DCS networks, or plant SCADA systems.\u003c\/p\u003e\n\u003ch3\u003eConfiguration Architecture Breakdown\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eBently Nevada 991 Thrust Transmitter Platform\u003c\/strong\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Series [991]:\u003c\/strong\u003e 2-Wire Proximity Probe Axial Thrust \/ Position Transmitter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-Scale Range Option [06]:\u003c\/strong\u003e 0.6–0–0.6 mm (25–0–25 mils) Axial Displacement Range\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Cable Length Option [50]:\u003c\/strong\u003e 5.0 Meters (16.4 Feet) Total Probe \u0026amp; Extension Cable Tuning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardware Mounting Option [03]:\u003c\/strong\u003e Complete with DIN Rail Mounting Clips and Assembly Screws\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgency Approval Option [00]:\u003c\/strong\u003e Standard Commercial \/ Non-Approved Variant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications \u0026amp; Operating Boundaries\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eEngineering Parameter\u003c\/th\u003e\n\u003cth\u003eField Specification Detail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003eBently Nevada\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e991-06-50-03-00\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e991 Probe Vibration Transmitter\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrimary Measurement Axis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAxial Shaft Displacement \/ Rotor Thrust Position Monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAnalog Signal Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4-20 mAdc Proportional Current Loop (2-Wire Loop Powered)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLoop Measurement Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWithin ±1.5% over full-scale range (measured across 250 Ω loop resistance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage Window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+12 Vdc to +35 Vdc Loop Power Input at Transmitter Terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Impedance Load\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,000 Ω Loop Resistance (including interconnect cabling at 35 Vdc)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensor Hardware Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAccepts 1 x non-contacting 3300 NSv Proximity Probe \u0026amp; Extension Cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProx Out Linear Gap Window\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.25 mm to 1.65 mm (0.6-0-0.6 mm process output range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLoop Current Limiting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e23 mA typical under over-range shaft deflection conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Installation \u0026amp; Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mm Standard DIN Rail Mount (Net Weight: 0.43 kg \/ 0.9 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Ambient Limits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-35°C to +85°C (-31°F to +185°F) Environment Rating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCompatible Hardware \u0026amp; Operational Deployments\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Components \u0026amp; Interfacing:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e3300 NSv Proximity Probes\u003c\/strong\u003e\u003c\/span\u003e and matching 5.0-meter extension cables.\u003c\/li\u003e\n\u003cli\u003eProgrammable Logic Controllers (PLCs), Distributed Control Systems (DCS), and SCADA analog input cards.\u003c\/li\u003e\n\u003cli\u003ePortable vibration analyzers via the raw Prox Out buffered voltage test terminal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Machinery \u0026amp; Industrial Applications:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eRotor axial position surveillance on multi-stage centrifugal gas compressors.\u003c\/li\u003e\n\u003cli\u003eThrust bearing shoe wear detection in steam turbines, large blowers, and boiler feed pumps.\u003c\/li\u003e\n\u003cli\u003eHydro-turbine runner displacement and gearbox thrust collar monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic \u0026amp; Predictive Self-Monitoring Capabilities\u003c\/h3\u003e\n\u003cp\u003eThe \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e991-06-50-03-00 Bently Nevada\u003c\/strong\u003e\u003c\/span\u003e transmitter features built-in self-testing routines that monitor probe gap integrity and loop health. If a broken cable, open circuit, or severe target over-gap occurs, the unit initiates a \"Not OK \/ Signal Defeat\" sequence: dropping loop current below 3.6 mA in under 100 microseconds to suppress false process trips. Once the fault clears, normal current output restores automatically within 0.1 seconds. Furthermore, non-interacting external zero and span potentiometers allow fast field recalibration without affecting raw buffered voltage outputs.\u003c\/p\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cp\u003eIn a petrochemical plant modernization project, engineers needed to incorporate thrust position protection into an existing PLC cabinet without the high capital expense of adding a dedicated 3500 rack rack system. Installing the \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e991-06-50-03-00 Bently Nevada\u003c\/strong\u003e\u003c\/span\u003e transmitter on a standard DIN rail solved the space constraint. By outputting direct 4-20mA signals into the control system, the team established reliable rotor position monitoring while keeping raw BNC signal access available for handheld predictive maintenance instruments.\u003c\/p\u003e\n\u003ch3\u003eWarranty, Logistics \u0026amp; Fast Shipping\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Condition:\u003c\/strong\u003e 100% Brand New and Genuine Factory Stock\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Protection:\u003c\/strong\u003e Full 12-Month Quality Warranty from dispatch date\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder Processing Window:\u003c\/strong\u003e Fast handling, shipping within 24 to 48 hours post-payment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Express Courier:\u003c\/strong\u003e Direct door-to-door delivery via FedEx, UPS, and DHL networks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Selection \u0026amp; Operational FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy must the system cable length match the specified -50 option precisely?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe internal driver circuitry of the transmitter is factory-calibrated to match the total capacitance and inductance of a 5.0-meter probe and extension cable system. Mixing probe lengths will throw off linearity and zero-point calibration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the purpose of the buffered Prox Out terminal on the transmitter body?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe raw buffered terminal provides an unfiltered voltage signal proportional to physical probe gap. Technicians connect oscilloscope probes or portable vibration data collectors here to analyze dynamic shaft behavior without disturbing the 4-20mA loop.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does the 991 series handle power supply fluctuations within field panels?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe unit incorporates internal voltage regulation that accepts input ranges from +12 Vdc to +35 Vdc. As long as the terminal voltage stays within these boundaries, the 4-20mA loop accuracy remains stable across varying load resistances up to 1,000 Ω.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan this transmitter interface with standard 3300 XL 8 mm probes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The \u003cspan style=\"color: #0056b3;\"\u003e\u003cstrong\u003e991-06-50-03-00\u003c\/strong\u003e\u003c\/span\u003e transmitter circuit is specifically calibrated for use with 3300 NSv narrow-side-view proximity probes designed for tight mounting clearances. Connecting standard 8 mm probes results in improper scale factor response.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat zero-point voltage reading should technicians expect during initial mechanical gapping?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen setting up a 0.6–0–0.6 mm transmitter, mechanically gap the probe tip until the raw voltage reading at the test terminal reads approximately mid-scale (typically -9.0 Vdc to -10.0 Vdc bias depending on shaft target material), corresponding to a baseline 12 mA loop output.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_524659a5-cbca-478a-b812-374d1b70ec8e.png?v=1784875246\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013972156598,"sku":"991-06-50-03-00","price":218.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_2_9cecce00-bd0f-4f4a-a808-6cfd998f993c.jpg?v=1787731125"},{"product_id":"bently-nevada-991-25-70-01-01-thrust-transmitter-4-20ma","title":"Bently Nevada 991-25-70-01-01 Thrust Transmitter | 4-20mA","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada\u003c\/strong\u003e \u003cstrong\u003e991-25-70-01-01\u003c\/strong\u003e \u003cstrong\u003e991 Series\u003c\/strong\u003e Probe Vibration Transmitter delivers reliable, continuous measurement of axial shaft position in critical rotating machinery. Designed specifically for industrial automation environments, this 2-wire loop-powered unit translates non-contacting proximity probe inputs into a standard industrial control signal. Engineered and manufactured in the United States, the unit guarantees high operational integrity for machinery protection systems.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications \u0026amp; MECE Classification\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \u0026amp; Model:\u003c\/strong\u003e \u003cstrong\u003eBently Nevada\u003c\/strong\u003e \u003cstrong\u003e991-25-70-01-01\u003c\/strong\u003e (\u003cstrong\u003e991 Series\u003c\/strong\u003e)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Range \u0026amp; Linear Range:\u003c\/strong\u003e Full-scale option features 25-0-25 mils, supporting linear ranges of 0.6-0-0.6 mm or 25-0-25 mils with a linear range of 0.25 to 1.65 mm for Prox Out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensitivity \u0026amp; Accuracy:\u003c\/strong\u003e 4 to 20 mA loop accuracy remains within plus or minus 1.5% over the specified full-scale range under typical operating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response \u0026amp; Signal Characteristics:\u003c\/strong\u003e Current limiting is set at 23 mA typical with a maximum loop resistance of 1,000 ohms at 35 Vdc. The unit features non-interacting external zero and span adjustments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResolution \u0026amp; Diagnostics:\u003c\/strong\u003e Not OK\/Signal Defeat logic drops output below 3.6 mA within 100 microseconds during fault conditions and restores output within 0.1 seconds after fault removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range \u0026amp; Environmental Tolerances:\u003c\/strong\u003e Transmitter operating temperature spans from minus 35 degrees Celsius to plus 85 degrees Celsius, while storage temperature ranges from minus 51 degrees Celsius to plus 100 degrees Celsius.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterference Immunity \u0026amp; Power:\u003c\/strong\u003e Requires plus 12 to plus 35 Vdc input power at the transmitter terminal in a 2-wire configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhysical \u0026amp; Mechanical Parameters:\u003c\/strong\u003e Weighs 0.43 kg (0.9 lbm). Features Polyphenylene sulfide transducer tip material, AISI 303 or 304 stainless steel case, and a 75-ohm coaxial probe cable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation \u0026amp; Commissioning Guide\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSecure the transmitter directly onto standard 35 mm DIN-rail clips inside the industrial cabinet.\u003c\/li\u003e\n\u003cli\u003eConnect one non-contacting 3300 NSv proximity probe and its matching extension cable to the designated input terminals.\u003c\/li\u003e\n\u003cli\u003eVerify that the 2-wire loop power supply provides between plus 12 and plus 35 Vdc with total loop resistance under 1,000 ohms.\u003c\/li\u003e\n\u003cli\u003eAdjust the non-interacting external zero and span potentiometers carefully during initial system calibration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaintenance \u0026amp; Operational Usability\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe modular DIN-rail setup allows rapid physical replacement without complicated mounting procedures.\u003c\/li\u003e\n\u003cli\u003eExternal zero and span controls permit field calibration without requiring proprietary configuration software.\u003c\/li\u003e\n\u003cli\u003eBuilt-in Not OK signal defeat circuitry automatically flags probe failures or open circuits to protect the control loop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; System Integration\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFully compatible with \u003cstrong\u003eBently Nevada\u003c\/strong\u003e 3300 NSv proximity probes and associated extension cables.\u003c\/li\u003e\n\u003cli\u003eInterfaces smoothly with standard distributed control systems or programmable logic controllers accepting 4-20 mA current loops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCertifications \u0026amp; Compliance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCSA Division 2 hazardous area approval for safe deployment in volatile industrial sectors.\u003c\/li\u003e\n\u003cli\u003eComplies with rigorous industrial manufacturing standards and carries a comprehensive 12-month service warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePackage Contents \u0026amp; Logistics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIncludes the \u003cstrong\u003eBently Nevada\u003c\/strong\u003e \u003cstrong\u003e991-25-70-01-01\u003c\/strong\u003e transmitter unit, 35 mm DIN-rail clips, and technical documentation.\u003c\/li\u003e\n\u003cli\u003eShipped securely via FedEx, UPS, or DHL with rapid 24-48 hour dispatch schedules.\u003c\/li\u003e\n\u003cli\u003eBacked by a full 12-month operational warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications \u0026amp; Diagnostic Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMonitors axial thrust displacement on centrifugal air compressors, industrial pumps, large motors, and fans.\u003c\/li\u003e\n\u003cli\u003eProvides early warning diagnostics for thrust bearing wear, preventing catastrophic machinery failures in oil, gas, and power generation plants.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSelection Comparison \u0026amp; Technical Guidance\u003c\/h3\u003e\n\u003cp\u003eWhen evaluating alternative configurations, consider the \u003ca href=\"https:\/\/www.plcsparehub.com\/products\/991-25-70-03-00-bently-nevada-thrust-transmitter-4-20ma-vibration-monitor\"\u003e991-25-70-03-00\u003c\/a\u003e model if your installation layout requires different mounting clips or hardware options. Engineering teams should match the system length option (such as the 7.0-meter cable option on the \u003cstrong\u003e991-25-70-01-01\u003c\/strong\u003e) precisely with physical probe placement to prevent signal attenuation.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What causes the transmitter output to drop below 3.6 mA?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The Not OK\/Signal Defeat circuit triggers this drop within 100 microseconds if it detects a severed probe cable, power loss, or internal sensor fault.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I adjust the zero and span settings in the field?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the device features non-interacting external adjustments that allow calibration technicians to tune the 4-20 mA output directly on the DIN rail.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the maximum allowable cable resistance for the 4-20 mA loop?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The maximum loop resistance is 1,000 ohms, which includes the total wiring resistance when operating at 35 Vdc.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_524659a5-cbca-478a-b812-374d1b70ec8e.png?v=1784875246\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013972222134,"sku":"991-25-70-01-01","price":133.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991_2.jpg?v=1784875460"},{"product_id":"991-25-70-03-00-bently-nevada-thrust-transmitter-4-20ma-vibration-monitor","title":"991-25-70-03-00 Bently Nevada Thrust Transmitter | 4-20mA Vibration Monitor","description":"\u003ch3\u003e991-25-70-03-00 Bently Nevada Thrust Transmitter | 4-20mA Vibration Monitor\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #d84315;\"\u003e991-25-70-03-00\u003c\/span\u003e\u003c\/strong\u003e is a precision-engineered thrust transmitter from \u003cstrong\u003e\u003cspan style=\"color: #d84315;\"\u003eBently Nevada\u003c\/span\u003e\u003c\/strong\u003e, designed for continuous axial position monitoring in mission-critical rotating machinery. By converting inputs from 3300 NSv proximity probes into a standardized 4-20 mA signal, this module ensures reliable communication with your existing industrial control and safety systems.\u003c\/p\u003e\n\u003ch3\u003eConfiguration Breakdown\u003c\/h3\u003e\n\u003ctable style=\"border-collapse: collapse; width: 100%;\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"padding: 10px; background-color: #f8f9fa;\"\u003eSegment\u003c\/th\u003e\n\u003cth style=\"padding: 10px; background-color: #f8f9fa;\"\u003eOption\u003c\/th\u003e\n\u003cth style=\"padding: 10px; background-color: #f8f9fa;\"\u003eDescription\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e991\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003eAxial Thrust Transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px;\"\u003eFull-Scale\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e25\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e25-0-25 mils range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px;\"\u003eSystem Length\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e70\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e7.0 meters (23.0 feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003e03\u003c\/td\u003e\n\u003ctd style=\"padding: 10px;\"\u003eDIN rail clips and screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #d84315;\"\u003e991-25-70-03-00\u003c\/span\u003e\u003c\/strong\u003e is a vital component for axial rotor protection. We particularly value its \"Not OK\" diagnostic capability—the transmitter drives the signal below 3.6 mA within 100 microseconds during a fault. This ultra-fast response is essential for preventing catastrophic machinery failure in compressors and turbines.\u003c\/p\u003e\n\u003ch3\u003eApplication and Technical Advice\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuitable Equipment:\u003c\/strong\u003e Centrifugal compressors, steam\/gas turbines, and industrial pumps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical Suggestion:\u003c\/strong\u003e Always verify your probe system is the 3300 NSv type. Using non-compatible probe hardware will cause non-linear output errors in the 4-20 mA loop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLogistics and Warranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDispatch: 24-48 hour processing for in-stock orders.\u003c\/li\u003e\n\u003cli\u003eShipping: Secure global transit via FedEx, UPS, or DHL.\u003c\/li\u003e\n\u003cli\u003eWarranty: All units include a 12-month performance guarantee.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eExpert Frequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does the \"Not OK\" signal indicate in my DCS?\u003c\/strong\u003e\u003cbr\u003eA: It indicates a loss of signal (e.g., probe disconnection, cable fault, or internal power failure) that requires immediate maintenance investigation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this transmitter with a 3300 XL probe?\u003c\/strong\u003e\u003cbr\u003eA: No, the 991 transmitter is explicitly tuned for the 3300 NSv system; using a different series will result in inaccurate axial position data.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the maximum cable run for the 4-20 mA loop?\u003c\/strong\u003e\u003cbr\u003eA: The loop can support up to 1,000 Ω of total resistance, which generally allows for long runs, provided your power supply voltage is at least 35 Vdc.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I adjust the span if my reading is slightly off?\u003c\/strong\u003e\u003cbr\u003eA: The module features non-interacting external zero and span adjustments; please use a precision current calibrator to verify the output against the physical gap distance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the DIN rail mounting?\u003c\/strong\u003e\u003cbr\u003eA: The 03 mounting option ensures secure installation in standard control cabinets, minimizing vibration-induced contact resistance at the terminals.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/991.png?v=1781085041\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013972254902,"sku":"991-25-70-03-00","price":133.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_6_b2c16fac-85af-4c16-9c29-6d59d788f28e.jpg?v=1781085073"},{"product_id":"bently-nevada-990-05-70-02-00-vibration-transmitter-0-5-mils-range","title":"Bently Nevada 990-05-70-02-00 Vibration Transmitter 0-5 Mils Range","description":"\u003ch3\u003eTechnical Overview: \u003cstrong\u003e\u003cspan style=\"color: #2c3e50;\"\u003e990-05-70-02-00\u003c\/span\u003e\u003c\/strong\u003e Transmitter\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #2c3e50;\"\u003e990-05-70-02-00\u003c\/span\u003e\u003c\/strong\u003e is a precision-engineered 2-wire vibration transmitter from the Bently Nevada 990 series. It is designed to interface directly with 3300 NSv proximity probes, converting displacement data into a standard 4-20 mA industrial signal. This loop-powered device is optimized for balance-of-plant machinery where cost-effective, reliable monitoring is required without the complexity of full rack-based protection systems.\u003c\/p\u003e\n\u003ch3\u003eConfiguration Breakdown\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e990\u003c\/strong\u003e - Series: 990 Vibration Transmitter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e05\u003c\/strong\u003e - Full-scale Option: 0-5 mils pp (0-125 μm pp)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e70\u003c\/strong\u003e - System Length Option: 7.0 meters (23.0 feet)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e02\u003c\/strong\u003e - Mounting Option: Bulkhead screws\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e00\u003c\/strong\u003e - Agency Approval: Not required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKey Performance Metrics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 4-20 mAdc (2-wire configuration).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Response:\u003c\/strong\u003e 5 Hz to 6,000 Hz (+0, -3 dB).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Requirement:\u003c\/strong\u003e +12 to +35 Vdc input.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Integrity:\u003c\/strong\u003e 1,000 Ω max resistance at 35 Vdc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFailure Mode:\u003c\/strong\u003e Signal drops to \u0026lt; 3.6 mA upon \"Not OK\" detection (100 µs response).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComparison \u0026amp; Technical Selection Guide\u003c\/h3\u003e\n\u003cp\u003eChoosing between the \u003cstrong\u003e\u003cspan style=\"color: #2c3e50;\"\u003e990-05-70-02-00\u003c\/span\u003e\u003c\/strong\u003e and the \u003ca href=\"https:\/\/www.plcsparehub.com\/products\/990-10-70-03-cn-bently-nevada-vibration-transmitter-4-20ma\"\u003e990-10-70-03-CN\u003c\/a\u003e depends on your machine's mechanical threshold:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRange Sensitivity:\u003c\/strong\u003e The \u003cstrong\u003e\u003cspan style=\"color: #2c3e50;\"\u003e990-05-70-02-00\u003c\/span\u003e\u003c\/strong\u003e (0-5 mils) is ideal for high-precision monitoring of machinery with low vibration tolerance. The \u003ca href=\"https:\/\/www.plcsparehub.com\/products\/990-10-70-03-cn-bently-nevada-vibration-transmitter-4-20ma\"\u003e990-10-70-03-CN\u003c\/a\u003e (0-10 mils) is better suited for standard industrial pumps and motors with higher amplitude baselines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Considerations:\u003c\/strong\u003e The 02 mounting (bulkhead) versus the 03 mounting (DIN rail\/other) must align with your existing cabinet infrastructure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTechnical Advice:\u003c\/strong\u003e Always ensure the probe gap is set to 0.5-1.75 mm. Using the wrong range setting will lead to signal clipping or insufficient resolution for your SCADA system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #2c3e50;\"\u003e990-05-70-02-00\u003c\/span\u003e\u003c\/strong\u003e is highly effective for critical balance-of-plant assets. Its diagnostic capability is excellent—it automatically reports a \"Not OK\" status by driving the loop below 3.6 mA, effectively signaling a sensor or cable failure to your PLC\/DCS. When implementing, prioritize clean wiring to minimize EMI, as this device relies on sensitive proximity probe signal processing.\u003c\/p\u003e\n\u003ch3\u003eLogistics and Warranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Protected by a 12-month quality assurance warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFulfillment:\u003c\/strong\u003e Rapid 24-48 hour dispatch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping:\u003c\/strong\u003e Secure global transit via FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eExpert FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the typical use case for a 0-5 mils range transmitter?\u003c\/strong\u003e\u003cbr\u003eThis range is specifically chosen for equipment requiring sensitive vibration detection, such as high-speed gearboxes or precision rotating shafts where small deviations indicate imminent wear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this with any proximity probe?\u003c\/strong\u003e\u003cbr\u003eNo, the 990 series is strictly calibrated for the Bently Nevada 3300 NSv proximity probe system. Mismatched probes will yield incorrect output and void safety compliance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow can I diagnose a \"Not OK\" condition remotely?\u003c\/strong\u003e\u003cbr\u003eMonitor the 4-20 mA loop current; if it drops below 3.6 mA, the transmitter has detected a fault in the probe, extension cable, or internal circuitry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the probe gap critical for accuracy?\u003c\/strong\u003e\u003cbr\u003eAbsolutely. If the gap is outside the 0.5-1.75 mm range, the transmitter's linear response is compromised, and the output signal will not represent the true vibration amplitude.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSelection Tip: How do I choose between different system lengths?\u003c\/strong\u003e\u003cbr\u003eThe system length must match your probe-to-transmitter cable run. Incorrect cable lengths introduce signal attenuation, which negatively impacts the calibration of the 4-20 mA output.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/990_Graphs_and_Figures.png?v=1775026312\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013981233334,"sku":"990-05-70-02-00","price":115.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada990_3_de5b668c-d84c-486b-886f-bc7c504caa4a.jpg?v=1781084528"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/collections\/990_991_And_177230_Transmitter.webp?v=1774338186","url":"https:\/\/www.plcsparehub.com\/collections\/990-991-and-177230-transmitter.oembed?page=3","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}