{"product_id":"991-01-xx-01-00-mod-288865-01-bently-nevada-990-991-series-thrust-transmitter","title":"991-01-XX-01-00 MOD 288865-01 Bently Nevada 990\/991 Series Thrust Transmitter","description":"\u003cp\u003eThe \u003cstrong\u003eBently Nevada 991-01-XX-01-00 MOD 288865-01\u003c\/strong\u003e serves as the primary \u003cstrong\u003e991\u003c\/strong\u003e Thrust Transmitter utilized to execute non-contacting shaft axial displacement monitoring across 990\/991 Series platforms. The device conditions raw proximity signals from field-mounted components into a linear 4-20 mA current loop proportional to total thrust position.\u003c\/p\u003e\n\u003ch3\u003eNomenclature \u0026amp; Configuration Code\u003c\/h3\u003e\n\u003cp\u003eThe alphanumerical block specifies the physical options built into this hardware assembly:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e991\u003c\/strong\u003e: Base module number for the specialized thrust measurement loop transmitter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e01\u003c\/strong\u003e: Core configuration options mapping internal conversion profiles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eXX\u003c\/strong\u003e: Denotes the field system length selection, supporting 5.0 meters (16.4 feet) or 7.0 meters (23.0 feet) sensor calibrations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e01\u003c\/strong\u003e: Equips the housing with 35 mm DIN-rail clips for mounting orientation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e00\u003c\/strong\u003e: Denotes that standard regional agency approval options are not required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMOD 288865-01\u003c\/strong\u003e: Factory hardware modification identifier tracking internal electronic line iterations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePhysical \u0026amp; Loop Parameters\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\u003e991-01-XX-01-00 MOD 288865-01\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e10 x 7.4 x 6 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-35 to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 Vdc input at terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA DC analog current loop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Limiting\u003c\/td\u003e\n\u003ctd\u003e23 mA typical threshold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProximity Core Compatibility\u003c\/td\u003e\n\u003ctd\u003e5mm and 8mm transducer variants\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eTransducer Scaling and Rotor Dynamics Processing\u003c\/h3\u003e\n\u003cp\u003eThe electronic assembly performs direct eddy-current probe scaling to generate a continuous 4-20 mA analog output representation of mechanical motion. During structural alignment, field technicians perform gap voltage validation (-10 VDC targets) through the dedicated BNC test terminal to verify that the integrated proximity sensor sits properly within its linear measurement window. The conversion circuit processes high-frequency signals to identify real-time changes in rotor dynamics, passing filtered displacement data downstream to process networks. The multi-layered circuit layout integrates cross-talk suppression paths, blocking high-frequency noise interference between adjacent rail units sharing the same power rail distribution line.\u003c\/p\u003e\n\u003ch3\u003eSystem Shipment Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x 991 Thrust Transmitter Module\u003c\/li\u003e\n\u003cli\u003e2 x Factory Mounted 35 mm DIN-rail clips\u003c\/li\u003e\n\u003cli\u003e1 x Product Installation Leaflet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Assembly \u0026amp; Electrical Connections\u003c\/h3\u003e\n\u003ch3\u003eMechanical Orientation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the unit onto standard 35 mm symmetric DIN rails inside an enclosed instrument cabinet.\u003c\/li\u003e\n\u003cli\u003eMaintain clear space zones above and below the module ventilation openings to permit natural cooling airflow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Cable Grounding\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTerminate the sensor cable shield directly at the transmitter housing ground terminal block.\u003c\/li\u003e\n\u003cli\u003eEnsure the main field ground network connects back to the common instrumentation grounding bus.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLoop Wiring Sequence\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify loop supply power remains switched off before attaching +12 Vdc to +35 Vdc distribution wires.\u003c\/li\u003e\n\u003cli\u003eAdhere to local terminal block tightening specs to maintain constant contact pressure under active field vibrations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Engineering FAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCan the transmitter unit be mounted directly on the machinery block?\u003c\/p\u003e\n\u003cp\u003eNo. The unit must be mounted within a protective environmental enclosure or control room cabinet to remain within the specified -35 to +85 deg C operating temp boundary.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat occurs if the supply loop current exceeds the typical 23 mA threshold?\u003c\/p\u003e\n\u003cp\u003eThe internal safety current limiting protective circuit triggers at 23 mA, clamping loop current to prevent terminal damage if a sensor fault develops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes this transmitter module support hot-swapping under live loop power?\u003c\/p\u003e\n\u003cp\u003eNo. Disconnecting active loop wiring will interrupt the loop power circuit and drop the downstream 4-20 mA signal level to 0 mA, tripping safety interlocks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow is the proximity raw gap monitored without disturbing the 4-20 mA output loop?\u003c\/p\u003e\n\u003cp\u003eAttach a high-impedance digital voltmeter directly to the coaxial BNC test port located on the front panel to view the raw voltage without affecting current outputs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the significance of the MOD 288865-01 factory number on the casing?\u003c\/p\u003e\n\u003cp\u003eThis number indicates a factory modification package mapping particular internal filter constants or operational changes specialized to this tracking variant.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat field issues result from incorrect system length cable settings?\u003c\/p\u003e\n\u003cp\u003eMatching the wrong system length will alter the eddy-current probe scaling, producing linearity deviation errors across the 4-20 mA conversion scale.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs an external calibration instrument needed during the physical mounting process?\u003c\/p\u003e\n\u003cp\u003eNo mechanical calibration is needed on the unit; adjusting physical probe clearance to hit the targeted baseline voltage is all that is required.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAre specialized isolation modules required for the 4-20 mA transmission loop?\u003c\/p\u003e\n\u003cp\u003eIf common ground noise exists between the field cabinet and the DCS input cards, use standard loop isolators to safeguard signal integrity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":46025401729197,"sku":"991-01-XX-01-00 288865-01","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/Bently991-25-70-01-01_1_6_ce01446e-3a96-4afb-a145-883c4b94231a.jpg?v=1784119988","url":"https:\/\/www.maxwellplc.com\/ru\/products\/991-01-xx-01-00-mod-288865-01-bently-nevada-990-991-series-thrust-transmitter","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}