{"product_id":"bently-nevada-991-06-50-01-00-991-series-thrust-transmitter","title":"Bently Nevada 991-06-50-01-00 991 Series Thrust Transmitter","description":"\u003ch2\u003eBently Nevada 991-06-50-01-00 991 Series Thrust Transmitter\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 991-06-50-01-00\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e991\u003c\/strong\u003e Thrust Transmitter, operates as a dedicated hardware component for axial displacement monitoring within industrial machinery control systems. Configured for proximity probe interfacing, the device transforms raw radio-frequency eddy-current signals from a 3300 NSv sensor into a linear 4-20 mA loop-powered output representing dynamic shaft position.\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\u003e991-06-50-01-00\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.44 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e7.4 x 6 x 10 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to +85 deg C (standard transmitter exposure rating)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eLoop-powered, 24 VDC nominal (requires 4-20 mA loop supply)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1000 ohms including cable at 35 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Limiting\u003c\/td\u003e\n\u003ctd\u003e23 mA 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\u003eInput Compatibility\u003c\/td\u003e\n\u003ctd\u003e3300 NSv proximity probe and matching extension cable (5 m or 7 m)\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 axial displacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e8537101190\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eMachinery Monitoring \u0026amp; Eddy-Current Probe Scaling\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada 991-06-50-01-00\u003c\/strong\u003e integrates the functionality of a traditional proximity sensor and transmitter into a singular potted enclosure. Internal drive circuits energize the connected 3300 NSv eddy-current probe, establishing an electromagnetic field near the target shaft surface. To ensure correct eddy-current probe scaling, the minimum target size must be a diameter of 9.5 mm (0.375 in). As the shaft shifts axially, the change in gap voltage is conditioned directly into a calibrated 4-20 mA current loop. For diagnostic validation, the raw gap voltage (-10 VDC target range) is accessible via the coaxial connector and the PROX OUT terminal. The integrated Not OK \/ Signal Defeat circuit monitors the integrity of this physical cable connection, clamping the loop output to prevent false high-signal trips or alarms in the event of an eddy-current probe breakdown or a disconnected extension line.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the absolute maximum loop resistance allowed for the 991-06-50-01-00 signal loop?\u003c\/p\u003e\n\u003cp\u003eA: The maximum loop resistance is 1000 ohms, which includes the resistance of the interconnecting field cable when operating at a loop voltage of 35 VDC.\u003c\/p\u003e\n\u003cp\u003eQ: How can the loop output of the 991-06-50-01-00 be verified without physically moving the machine shaft?\u003c\/p\u003e\n\u003cp\u003eA: The transmitter features a dedicated Test Input pin. By applying a variable external DC voltage source to this terminal, personnel can simulate gap changes to verify zero, span, and overall loop-signal precision across the 4-20 mA spectrum.\u003c\/p\u003e\n\u003cp\u003eQ: Does adjusting the zero setting on this transmitter alter the span setting?\u003c\/p\u003e\n\u003cp\u003eA: No. The 991-06-50-01-00 utilizes non-interacting external zero and span adjustments under the transmitter label, allowing individual parameter calibration without loop interaction.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Configurations\u003c\/strong\u003e: Secure the transmitter utilizing standard DIN-rail clips or direct bulkhead mounting screws. The potted construction allows deployment in high-humidity zones up to 100% condensing, but protection from direct liquid spray is required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Length Calibration\u003c\/strong\u003e: The transmitter must match the selected system length option (5 m or 7 m). Altering or trimming the length of the 3300 NSv extension cable will invalidate the factory eddy-current calibration and introduce measurement linearity errors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotentiometer Adjustments\u003c\/strong\u003e: Zero and span adjustments must be executed via the non-interacting potentiometers located beneath the transmitter label. Use a non-conductive tuning tool to prevent electrical shorts or signal fluctuations during field calibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Isolation\u003c\/strong\u003e: Maintain shield continuity through the probe-to-extension connection using insulation sleeves. Ground the overall cable shield exclusively at a single point inside the receiver control panel to suppress common-mode electromagnetic noise.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":44318941184099,"sku":null,"price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/991-06-50-01-01-2.jpg?v=1783324773","url":"https:\/\/precisemodule.com\/products\/bently-nevada-991-06-50-01-00-991-series-thrust-transmitter","provider":"Precise Module Ltd.","version":"1.0","type":"link"}