{"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","url":"https:\/\/www.plcsparehub.com\/products\/990-08-50-02-01-bently-nevada-990-vibration-transmitter-990-series","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}