{"product_id":"bently-nevada-991-25-50-03-05-probe-vibration-transmitter","title":"Bently Nevada 991-25-50-03-05 Probe Vibration Transmitter","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eWhen axial thrust monitoring in rotating machinery requires high reliability, the Bently Nevada 991-25-50-03-05 Probe Vibration Transmitter delivers precise displacement measurement. Designed for thrust applications, this 4-20 mA output transmitter mounts on a DIN rail and accepts a single non-contacting 3300 NSv proximity probe. Its Not OK\/Signal Defeat feature quickly identifies sensor faults, minimizing downtime. Made in the USA, the 991-25-50-03-05 carries CSA Division 2, ATEX Zone 0, ATEX Zone 2, and ABS maritime approvals.\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\u003eFull-Scale Option\u003c\/td\u003e\n\u003ctd\u003e25-0-25 mils\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Length Option\u003c\/td\u003e\n\u003ctd\u003e5.0 meters (16.4 ft)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eDIN rail with clips and 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\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4-20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\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\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 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1.5% over specified full scale (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum 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\u003eNot OK Signal\u003c\/td\u003e\n\u003ctd\u003eLess than 3.6 mA within 100 µs; restores within 0.1 s after condition cleared\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\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cp\u003eThe Bently Nevada 991-25-50-03-05 is ideal for axial thrust monitoring in steam turbines, compressors, and large pumps. It provides a 4-20 mA signal proportional to shaft displacement, enabling integration with PLCs and DCS systems. The rugged design withstands harsh industrial environments with operating temperatures from -35°C to +85°C.\u003c\/p\u003e\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\u003cp\u003eMount the 991-25-50-03-05 on a standard DIN rail using the included clips and screws. Connect a compatible 3300 NSv proximity probe and extension cable to the transmitter input. Apply +12 to +35 Vdc power. The 2-wire configuration simplifies wiring. Ensure the loop resistance does not exceed 1,000 Ω. Adjust zero and span using the non-interacting external potentiometers.\u003c\/p\u003e\u003ch2\u003eTroubleshooting Common Issues\u003c\/h2\u003e\u003cp\u003eIf the output remains at less than 3.6 mA, check for a Not OK condition. Verify probe and cable integrity. Ensure power supply is within +12 to +35 Vdc. Loop resistance exceeding 1,000 Ω may cause accuracy degradation. Use the non-interacting zero and span adjustments to calibrate if needed. The 991-25-50-03-05's fast response aids in quick diagnosis.\u003c\/p\u003e\u003ch2\u003eSelection Guide\u003c\/h2\u003e\u003cp\u003eWhen selecting the Bently Nevada 991-25-50-03-05, verify the full-scale option, system length, and agency approvals match your application. This transmitter works with standard DIN rail and requires a compatible 3300 NSv probe. For genuine automation spares, contact PLC Source PRO at ubest101.myshopify.com.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default","offer_id":44416878608483,"sku":"991-25-50-03-05","price":290.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.plcsourcepro.com\/products\/bently-nevada-991-25-50-03-05-probe-vibration-transmitter","provider":"PLC Source PRO","version":"1.0","type":"link"}