{"product_id":"991-25-70-01-cn-991-thrust-transmitter-bently-nevada","title":"991-25-70-01-CN 991 Thrust Transmitter | Bently Nevada","description":"\u003ch2\u003eBently Nevada 991-25-70-01-CN 991 Thrust Transmitter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 991-25-70-01-CN\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e991-25-70-01-CN\u003c\/strong\u003e 991 Thrust Transmitter, operates as a dedicated hardware component for axial shaft position measurement within machinery protection monitoring systems. The transmitter processes 3300 NSv proximity probe signals and converts thrust displacement into a 4-20 mA loop-powered output.\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\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\u003eModel\u003c\/td\u003e\n\u003ctd\u003e991-25-70-01-CN\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eThrust Transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003e991\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\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003e3300 NSv non-contacting proximity probe with extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Function\u003c\/td\u003e\n\u003ctd\u003eAxial shaft displacement \/ thrust position monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMeasurement Range\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 to 1.65 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Configuration\u003c\/td\u003e\n\u003ctd\u003e2-wire loop-powered transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\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\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003e35 mm DIN-rail mounting clips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop Accuracy\u003c\/td\u003e\n\u003ctd\u003eTypically within +\/-1.5 % of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1000 ohms at 35 VDC including cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Limitation\u003c\/td\u003e\n\u003ctd\u003eApproximately 23 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Failure Output\u003c\/td\u003e\n\u003ctd\u003eLess than 3.6 mA within 100 us\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZero and Span Adjustment\u003c\/td\u003e\n\u003ctd\u003eExternal non-interactive adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-35 deg C to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-51 deg C to +100 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Operating Temp\u003c\/td\u003e\n\u003ctd\u003e-35 deg C to +177 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Storage Temp\u003c\/td\u003e\n\u003ctd\u003e-51 deg C to +177 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApproximately 0.43 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e53.3 mm x 73.9 mm x 100.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eLoop-powered operation, dependent on supply voltage and loop resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEddy-Current Probe Scaling and Rotor Dynamics Processing\u003c\/h3\u003e\n\u003cp\u003eThe 991-25-70-01-CN uses an eddy-current measurement interface to process displacement signals from the 3300 NSv proximity probe. The transmitter applies probe scaling characteristics to convert gap-related voltage changes into proportional shaft position data.\u003c\/p\u003e\n\u003cp\u003eThe system design includes gap voltage validation principles based on eddy-current probe operation. A typical probe operating point uses a -10 VDC gap voltage target to maintain measurement linearity and displacement accuracy.\u003c\/p\u003e\n\u003cp\u003eThe transmitter output represents axial rotor movement and supports rotor dynamics analysis by providing continuous thrust position feedback. Signal conditioning functions maintain measurement stability by reducing electrical interference effects during machinery operation.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What type of input sensor is compatible with the 991-25-70-01-CN?\u003c\/strong\u003e\u003cbr\u003eA: The transmitter accepts input from a Bently Nevada 3300 NSv non-contacting proximity probe with a matching extension cable system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What electrical output does the transmitter provide?\u003c\/strong\u003e\u003cbr\u003eA: The unit provides a proportional 4-20 mA DC signal through a 2-wire loop-powered configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the transmitter require cabinet mounting hardware?\u003c\/strong\u003e\u003cbr\u003eA: The device uses 35 mm DIN-rail clips for installation inside industrial control panels.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the transmitter on a standard 35 mm DIN rail inside a protected control cabinet environment.\u003c\/li\u003e\n\u003cli\u003eConnect the proximity probe, extension cable, and transmitter input wiring according to the approved Bently Nevada installation documentation.\u003c\/li\u003e\n\u003cli\u003eMaintain proper cable routing separation between probe wiring and high-voltage power conductors to reduce electrical interference.\u003c\/li\u003e\n\u003cli\u003eVerify probe gap voltage before commissioning to confirm correct eddy-current measurement operation.\u003c\/li\u003e\n\u003cli\u003eConnect the 4-20 mA loop with correct polarity and confirm loop power availability before operation.\u003c\/li\u003e\n\u003cli\u003eUse shielded instrumentation wiring where required and terminate cable shields according to site grounding practices.\u003c\/li\u003e\n\u003cli\u003ePerform zero and span adjustment verification after mechanical installation and shaft position alignment.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":44350183735384,"sku":"991-25-70-01-CN","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/991-25-70-01-CN-3.jpg?v=1783589422","url":"https:\/\/www.industriaxplc.com\/products\/991-25-70-01-cn-991-thrust-transmitter-bently-nevada","provider":"IndustriaX Limited","version":"1.0","type":"link"}