{"product_id":"bently-nevada-991-06-50-02-05-industrial-automation-module","title":"Bently Nevada 991-06-50-02-05 Industrial Automation Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Bently Nevada 991-06-50-02-05 Probe Vibration Transmitter is a precision axial thrust transmitter designed for critical rotating machinery. In the event of a sensor fault or abnormal condition, this module's Not OK\/Signal Defeat function forces the output below 3.6 mA within 100 µs, preventing false readings and triggering protective actions. Built for harsh environments, it operates reliably from -35°C to +85°C and stores from -51°C to +100°C. The 991-06-50-02-05 accepts one non-contacting 3300 NSv proximity probe and extension cable, making it a direct upgrade for older thrust monitoring systems.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e991 - Thrust Transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull-scale Option\u003c\/td\u003e\n\u003ctd\u003e06: 0.6-0-0.6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Length Option\u003c\/td\u003e\n\u003ctd\u003e-50: 5.0 meters (16.4 feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Option\u003c\/td\u003e\n\u003ctd\u003e02: Bulkhead screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAgency Approvals\u003c\/td\u003e\n\u003ctd\u003eCSA Division 2, ATEX Zone 0, ATEX Zone 2, ABS maritime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eDIN rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA (2-wire)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUse\u003c\/td\u003e\n\u003ctd\u003eAxial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Input\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 Vdc at transmitter terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLinear Range (Prox Out)\u003c\/td\u003e\n\u003ctd\u003e0.25 to 1.65 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Loop Linear Ranges\u003c\/td\u003e\n\u003ctd\u003e0.6-0-0.6 mm or 25-0-25 mils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003e±1.5% over full scale (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1,000 Ω 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\u003eZero and Span\u003c\/td\u003e\n\u003ctd\u003eNon-interacting external adjustments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNot OK\/Signal Defeat\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3.6 mA within 100 µs; restores in 0.1 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-35°C to +85°C (-31°F to +185°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-51°C to +100°C (-60°F to +212°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.43 kg (0.9 lbm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe Bently Nevada 991-06-50-02-05 thrives in axial vibration monitoring for steam turbines, gas compressors, and large pumps. In a typical turbine train, a fault in the thrust bearing can cause rapid damage; this transmitter's Not OK\/Signal Defeat ensures the control system receives an unambiguous low-current alarm within 100 µs, initiating a safe shutdown. The ±1.5% accuracy over the 0.6-0-0.6 mm range provides reliable data for predictive maintenance programs, reducing unplanned downtime.\u003c\/p\u003e\u003ch2\u003eInstallation and Setup\u003c\/h2\u003e\u003cp\u003eMount the Bently Nevada 991-06-50-02-05 on a standard DIN rail using the bulkhead screw option (option 02). Connect a compatible 3300 NSv proximity probe and extension cable to the input. The 5.0 meter system length (option -50) accommodates typical machine train distances. Power the transmitter with +12 to +35 Vdc at its terminal. Adjust zero and span using the non-interacting external potentiometers — no internal calibration required. Once configured, verify the 4-20 mA loop response and Not OK signal defeat behavior with a test input.\u003c\/p\u003e\u003ch2\u003eMaintenance and Reliability\u003c\/h2\u003e\u003cp\u003eRoutine inspection of the Bently Nevada 991-06-50-02-05 focuses on the probe and cable integrity. The transmitter's wide operating temperature range (-35°C to +85°C) ensures consistent performance in both arctic and tropical environments. The current limiting feature (23 mA typical) protects the loop from overcurrent conditions. Due to its robust design and ±1.5% accuracy, the 991-06-50-02-05 delivers long service life with minimal drift, reducing total cost of ownership.\u003c\/p\u003e\u003ch2\u003eBuying Guide and Selection Advice\u003c\/h2\u003e\u003cp\u003eWhen ordering the Bently Nevada 991-06-50-02-05, verify the full-scale option (06 = 0.6-0-0.6 mm) and system length (-50 = 5.0 m) match your application. Ensure your existing proximity probe is a 3300 NSv type. The transmitter carries CSA Division 2, ATEX Zone 0\/2, and ABS maritime approvals, making it suitable for hazardous and marine environments. For reliable sourcing, contact ubest101 — a trusted supplier of industrial automation spares — to confirm stock and availability.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default","offer_id":44416695631971,"sku":"991-06-50-02-05","price":217.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.plcsourcepro.com\/products\/bently-nevada-991-06-50-02-05-industrial-automation-module","provider":"PLC Source PRO","version":"1.0","type":"link"}