{"product_id":"bently-nevada-991-25-70-01-cn-industrial-automation-module","title":"Bently Nevada 991-25-70-01-CN Industrial Automation Module","description":"\u003ch2\u003eProduct Introduction\u003c\/h2\u003e\u003cp\u003eWhen axial thrust monitoring is critical to preventing catastrophic machinery failure, the Bently Nevada 991-25-70-01-CN provides reliable, continuous measurement. This probe vibration transmitter converts non-contacting proximity probe signals into a 4-20 mA output, engineered specifically for thrust position monitoring in rotating equipment. Designed in the USA, the 991-25-70-01-CN integrates seamlessly into existing control systems via DIN rail mounting.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications Breakdown\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\u003eFull-Scale Option\u003c\/td\u003e\n\u003ctd\u003e-25: 25-0-25 mils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Length\u003c\/td\u003e\n\u003ctd\u003e-70: 7.0 meters (23.0 feet)\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 Vdc\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\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-35°C to +85°C\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\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\u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003e1 non-contacting 3300 NSv probe and cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4-20 mA Loop Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1.5% typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1000 Ω 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\u003eNot OK\/Signal Defeat\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3.6 mA within 100 µs, restored in 0.1 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eEach specification ensures dependable operation in harsh industrial environments. The 991-25-70-01-CN offers non-interacting zero and span adjustments, simplifying calibration.\u003c\/p\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe Bently Nevada 991-25-70-01-CN excels in axial thrust monitoring for steam turbines, centrifugal compressors, and large pumps. In a typical turbine application, the transmitter provides a 4-20 mA signal proportional to shaft position, enabling early detection of thrust bearing wear. The built-in Not OK\/Signal Defeat feature drops the output below 3.6 mA within 100 µs during fault conditions, triggering alarms without delay.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eMount the Bently Nevada 991-25-70-01-CN on a standard DIN rail. Connect the 3300 NSv proximity probe and extension cable to the input terminals. Power the transmitter with +12 to +35 Vdc at the terminal block. The 4-20 mA loop wiring uses a simple two-wire configuration. Adjust zero and span using the non-interacting potentiometers. Ensure the system length option -70 (7.0 meters) matches your cable requirements.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eThe 991-25-70-01-CN operates reliably from -35°C to +85°C, with storage capability down to -51°C. The transmitter's robust design minimizes drift; periodic verification of loop accuracy (±1.5%) is recommended. The Not OK\/Signal Defeat circuit ensures failsafe operation, automatically restoring output within 0.1 seconds after the fault clears. No routine component replacement is needed under normal conditions.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eBefore purchasing the Bently Nevada 991-25-70-01-CN, verify the full-scale option (-25 for 25-0-25 mils) and system length (-70 for 7.0 meters). Confirm DIN rail availability and power supply range (+12 to +35 Vdc). For reliable sourcing, contact PLC Source PRO at ubest101.myshopify.com to ensure genuine Bently Nevada 991-25-70-01-CN units with proper agency approvals (-CN).\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default","offer_id":44416896172131,"sku":"991-25-70-01-CN","price":234.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/991-25-70-01-CN_8f1a49a6-0f23-42ec-842d-026e727265c5.jpg?v=1785255401","url":"https:\/\/www.plcsourcepro.com\/products\/bently-nevada-991-25-70-01-cn-industrial-automation-module","provider":"PLC Source PRO","version":"1.0","type":"link"}