{"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","url":"https:\/\/www.plcsparehub.com\/products\/990-04-50-02-05-990-vibration-transmitter-bently-nevada-module","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}