{"product_id":"bently-nevada-991-25-70-01-00-991-thrust-transmitter","title":"Bently Nevada 991-25-70-01-00 991 Transmetteur de poussée","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 991-25-70-01-00\u003c\/strong\u003e is a two-wire, loop-powered \u003cstrong\u003ethrust transmitter\u003c\/strong\u003e designed primarily for original equipment manufacturers (OEMs) of centrifugal air compressors, small pumps, motors, or fans. It accepts input signals from a \u003cstrong\u003e3300 NSv proximity probe\u003c\/strong\u003e and matching extension cable, transforming displacement data into a simple 4 to 20 mA proportional axial displacement (\u003cstrong\u003ethrust\u003c\/strong\u003e) signal. This configuration enables seamless integration directly into a machinery control system, PLC, or DCS without requiring an external Proximitor sensor unit.\u003c\/p\u003e\n\u003cp\u003eThe device features non-isolated \"PROX OUT\" and \"COM\" terminals alongside a coaxial connector, providing a dynamic vibration and gap voltage signal output for machinery diagnostics and maintenance verification.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIntegrated Proximitor sensor functionality eliminates the need for a separate signal conditioning unit.\u003c\/li\u003e\n\u003cli\u003eDirect 4 to 20 mA current loop output matches standard machinery control system inputs.\u003c\/li\u003e\n\u003cli\u003eDynamic diagnostic signal output via non-isolated coaxial connector for convenient troubleshooting.\u003c\/li\u003e\n\u003cli\u003eDesigned for compatibility with 3300 NSv proximity probe systems.\u003c\/li\u003e\n\u003cli\u003eRobust design tailored for mounting near monitored machinery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCentrifugal air compressors axial displacement monitoring\u003c\/li\u003e\n\u003cli\u003eIndustrial pumps and fans machinery protection systems\u003c\/li\u003e\n\u003cli\u003eSmall electric motors thrust bearing wear detection\u003c\/li\u003e\n\u003cli\u003eBalance drum monitoring on high-pressure fluid machinery\u003c\/li\u003e\n\u003cli\u003eBalance piston position tracking in rotating equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003ch3\u003e991-25-70-01-00\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e991\u003c\/strong\u003e: Thrust Transmitter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25\u003c\/strong\u003e: Full-scale option: 25-0-25 mils\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e70\u003c\/strong\u003e: System length option: 7.0 metres (23.0 feet)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e01\u003c\/strong\u003e: Mounting option: 35 mm DIN-rail clips\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e00\u003c\/strong\u003e: Agency approval option: Not required \/ Standard approvals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical 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\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBently Nevada (Baker Hughes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e991-25-70-01-00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThrust Transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnited States (USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull-Scale Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25-0-25 mils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.0 meters (23.0 feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mm DIN-rail clips\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgency Approvals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo hazardous area approvals required (-00 option)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 to 35 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA DC proportional axial displacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProximity Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 to 65 mils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Stability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eScale factor within plus\/minus 10% of 7.87 mV\/micrometer (200 mV\/mil) from 0 degC to 70 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmitter Operating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-35 degC to +85 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmitter Storage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-51 degC to +100 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSignal Output Maximum Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e13 km (8 miles) maximum between transmitter and receiving device\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProximitor Output Distance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMaximum cable distance of 3 meters (10 feet) via BNC connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApproximate Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.43 kg (unit only) \/ Shipping weight approx 2.00 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApproximate Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 mm x 74 mm x 53.3 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnections\/Interfaces\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eConnector Pin \/ Terminal\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePROX OUT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNon-isolated dynamic transducer signal for diagnostics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCOM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCommon \/ Ground return reference point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSIG\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA loop current signal output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePWR\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePositive loop power supply input terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoaxial Connector\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect connection point for 3300 NSv probe matching extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003ch3\u003eDIN Rail Installation\u003c\/h3\u003e\n\u003cp\u003eMount the transmitter using the pre-installed 35 mm DIN-rail clips. Ensure the rail is properly grounded and located in an area with minimal physical exposure to falling debris or direct process fluid leaks.\u003c\/p\u003e\n\u003ch3\u003eShielding and Grounding\u003c\/h3\u003e\n\u003cp\u003eAlways employ twisted, shielded pair cabling for the 4 to 20 mA loop connections. Connect the cable shield to the instrumentation ground at the control system or DCS side only. Do not ground the shield at both ends to avoid ground loop current errors.\u003c\/p\u003e\n\u003ch3\u003eCable Routing\u003c\/h3\u003e\n\u003cp\u003eRun the signal cables away from high-voltage AC power lines, electric motor feed cables, or switching relays to minimize EMI\/RFI noise interference on the low-voltage 4 to 20 mA loop signal.\u003c\/p\u003e\n\u003ch3\u003eProbe Gap Adjustment\u003c\/h3\u003e\n\u003cp\u003eSet the initial probe gap using the \"PROX OUT\" and \"COM\" terminals to monitor the initial DC gap voltage. Verify that the physical distance between the probe tip and the target material places the output safely within the linear operation range of 10 to 65 mils.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the primary function of the Bently Nevada 991?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt converts raw proximity probe data into a standard 4 to 20 mA loop signal representing axial shaft displacement or thrust.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich proximity probe family is compatible with this model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis model is designed specifically to interface with the Bently Nevada 3300 NSv proximity probe series and matching extension cables.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat power supply is required to drive the transmitter loop?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe transmitter operates on a standard loop power supply ranging between 12 Vdc and 35 Vdc.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I read raw dynamic signals while the transmitter is running?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the transmitter includes a non-isolated BNC coaxial connector and PROX OUT terminals to capture dynamic gap and vibration signals for diagnostic analysis.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat mounting option does the 991-25-70-01-00 feature?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis configuration includes integrated 01-option mounting hardware suited for standard 35 mm DIN rails.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52666541605227,"sku":"991-25-70-01-00","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bently-nevada-991-25-70-01-00-991-thrust-transmitter-czcnkkkmhcj_abbb7e1f-2cf6-410b-91de-238f48d0cb95.jpg?v=1765440474","url":"https:\/\/www.plcprotech.com\/fr\/products\/bently-nevada-991-25-70-01-00-991-thrust-transmitter","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}