{"product_id":"bently-nevada-991-06-50-01-01-industrial-automation-module","title":"Bently Nevada 991-06-50-01-01 Industrial Automation Module","description":"\u003ch2\u003eProduct Introduction\u003c\/h2\u003e\u003cp\u003eIn axial thrust monitoring applications, the \u003cstrong\u003eBently Nevada 991-06-50-01-01\u003c\/strong\u003e Probe Vibration Transmitter provides reliable 4-20 mA signals for precise measurement. This industrial automation module, manufactured in the USA, is specifically designed for axial displacement monitoring in rotating machinery. The 991-06-50-01-01 accepts a single non-contacting 3300 NSv proximity probe and extension cable, converting probe gap into a linear current loop output.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications Breakdown\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eBently Nevada 991-06-50-01-01\u003c\/strong\u003e includes these key parameters from the factory:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-Scale Option:\u003c\/strong\u003e 06 (0.6-0-0.6 mm) – ideal for thrust bearing clearance measurement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Length:\u003c\/strong\u003e 5.0 meters (16.4 feet) – probe and cable assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e 35 mm DIN-rail clips (Mounting Option 01).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e +12 to +35 Vdc input at the transmitter terminal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Signal:\u003c\/strong\u003e 4-20 mAdc over full-scale range, 2-wire configuration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e Within ±1.5% of full scale (typical), measured across a 250 Ω load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Loop Resistance:\u003c\/strong\u003e 1,000 Ω including cable at 35 Vdc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Limiting:\u003c\/strong\u003e 23 mA typical.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLinear Range:\u003c\/strong\u003e 0.25 to 1.65 mm for Prox Out; suitable for 0.6-0-0.6 mm or 25-0-25 mils current loop ranges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Limits:\u003c\/strong\u003e Operating -35°C to +85°C, Storage -51°C to +100°C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.43 kg (0.9 lbm).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgency Approval:\u003c\/strong\u003e CSA Division 2 (Agency Approval Option 01).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eReal-World Applications\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eBently Nevada 991-06-50-01-01\u003c\/strong\u003e is used for axial thrust position monitoring in steam turbines, compressors, and large pumps. Its 0.6-0-0.6 mm full-scale range suits typical clearance measurements. The fast Not OK\/Signal Defeat function (output \u0026lt;3.6 mA within 100 µs) enables early detection of probe faults or cable breaks, minimizing downtime. This makes the 991-06-50-01-01 a critical component for predictive maintenance programs.\u003c\/p\u003e\u003ch2\u003eTroubleshooting \u0026amp; Common Issues\u003c\/h2\u003e\u003cp\u003eA common failure mode in vibration monitoring is signal loss due to probe damage or cable deterioration. The \u003cstrong\u003eBently Nevada 991-06-50-01-01\u003c\/strong\u003e addresses this with its Not OK\/Signal Defeat feature: if a fault occurs, the output drops below 3.6 mA within 100 µs, and restores within 0.1 seconds after the condition clears. This rapid response allows operators to take corrective action before machine damage occurs. Non-interacting zero and span adjustments simplify recalibration after probe replacement.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eMount the \u003cstrong\u003eBently Nevada 991-06-50-01-01\u003c\/strong\u003e on a standard 35 mm DIN rail using the provided clips. Ensure the probe tip is positioned within the specified linear range (0.25 to 1.65 mm). Connect the probe and extension cable to the transmitter input. Power the unit with +12 to +35 Vdc; the 4-20 mA loop supplies power in a 2-wire configuration. Verify that total loop resistance does not exceed 1,000 Ω at 35 Vdc. Adjust zero and span using the external potentiometers for non-interacting calibration.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eWhen ordering a replacement or new installation, confirm the system length option (–50 = 5.0 meters) and agency approval (01 = CSA Division 2) match your environment. The 991-06-50-01-01 requires a compatible 3300 NSv proximity probe and extension cable (sold separately). For reliable supply, trust \u003cstrong\u003ePLC Source PRO\u003c\/strong\u003e (formerly ubest101) – your partner for industrial automation spares. Verify that the full-scale option (06 = 0.6-0-0.6 mm) meets your thrust bearing clearance requirements.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default","offer_id":44416680853603,"sku":"991-06-50-01-01","price":290.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.plcsourcepro.com\/products\/bently-nevada-991-06-50-01-01-industrial-automation-module","provider":"PLC Source PRO","version":"1.0","type":"link"}