{"product_id":"990-05-70-02-00-bently-nevada-990-vibration-transmitter","title":"990-05-70-02-00 Bently Nevada 990 Vibration Transmitter","description":"\u003cp\u003eThe \u003cstrong\u003eBently Nevada 990-05-70-02-00\u003c\/strong\u003e serves as the primary \u003cstrong\u003e990\u003c\/strong\u003e Vibration Transmitter utilized to execute proximity signal conditioning and velocity-proportional loop current conversion across machinery monitoring platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e990-05-70-02-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eVibration Transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e5 Hz to 6000 Hz (+0, -3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop Voltage\u003c\/td\u003e\n\u003ctd\u003e12 to 36 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC proportional to vibration velocity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProx Out Linear Range\u003c\/td\u003e\n\u003ctd\u003e1.4 mm (begins at approx. 0.25 mm from target)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProx Out Incremental Scale Factor\u003c\/td\u003e\n\u003ctd\u003e7.87 mV\/um typical\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\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C (-40 to 185 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 990 enclosure profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eStandard 990 housing weight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eLoop-powered via 4-20 mA current loop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eGap Voltage Validation (-10 VDC Targets) \u0026amp; Eddy-Current Probe Scaling\u003c\/h3\u003e\n\u003cp\u003eThe transmitter interfaces directly with an eddy-current proximity probe, evaluating target displacement via an incremental scale factor of 7.87 mV\/um over a 1.4 mm linear range. Proper field setup requires gap voltage validation to ensure the probe tip is offset approximately 0.25 mm from the target surface, achieving the ideal -10 VDC bias point for unclipped dynamic tracking. This accurate probe scaling allows reliable processing of dynamic shaft movements before transmitting a proportional 4-20 mA signal to process control hardware.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What power input is required to operate the transmitter current loop?\u003c\/p\u003e\n\u003cp\u003eA: The transmitter uses a 2-wire loop-powered configuration accepting a loop voltage between 12 VDC and 36 VDC to drive the 4-20 mA output signal.\u003c\/p\u003e\n\u003cp\u003eQ: What is the frequency measurement range for vibration velocity processing?\u003c\/p\u003e\n\u003cp\u003eA: The module processes vibration signals within a frequency response bandwidth of 5 Hz to 6000 Hz (+0, -3 dB).\u003c\/p\u003e\n\u003cp\u003eQ: What are the physical target requirements for the proximity probe interface?\u003c\/p\u003e\n\u003cp\u003eA: The proximity sensor requires a minimum conductive target surface diameter of 9.5 mm (0.375 in) to maintain accurate scale factor calibration.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eMount the transmitter module securely inside an enclosure or onto panel mounting points using appropriate mechanical fasteners.\u003c\/li\u003e\n\u003cli\u003eConnect the eddy-current proximity probe extension cable to the dedicated transmitter input terminal.\u003c\/li\u003e\n\u003cli\u003eMeasure static DC voltage across the raw proximity output terminals to validate proper target gap distance (-10 VDC target bias).\u003c\/li\u003e\n\u003cli\u003eRun 2-wire shielded cable from the 4-20 mA loop terminals to the PLC or DCS analog input card, observing correct DC voltage polarity.\u003c\/li\u003e\n\u003cli\u003eTerminate the cable shield at the system rack earthing bar to prevent electromagnetic interference and ground loop noise.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":43824929800282,"sku":"990-05-70-02-00","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/990-05-70-01-011_012cbc40-227d-4f87-b383-a07a4b479625.png?v=1786433994","url":"https:\/\/www.spareoil.com\/products\/990-05-70-02-00-bently-nevada-990-vibration-transmitter","provider":"SpareOil Automation","version":"1.0","type":"link"}