{"product_id":"bently-nevada-991-25-70-02-05-industrial-automation-module","title":"Bently Nevada 991-25-70-02-05 Industrial Automation Module","description":"\u003ch2\u003eProduct Introduction\u003c\/h2\u003e\u003cp\u003eThe Bently Nevada 991-25-70-02-05 is a precision Probe Vibration Transmitter designed for axial thrust measurement in rotating machinery. This Industrial Automation Module replaces older thrust monitoring systems with a reliable 4-20 mA output, simplifying integration into modern PLC and DCS controllers. Manufactured in the U.S.A., the 991-25-70-02-05 offers a full-scale range of 25-0-25 mils and a system length of 7.0 meters (23.0 feet) with bulkhead screw mounting.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eKey performance parameters for the Bently Nevada 991-25-70-02-05 include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Signal:\u003c\/strong\u003e 4-20 mA in a two-wire configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Requirement:\u003c\/strong\u003e +12 to +35 Vdc at the transmitter terminal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLinear Range:\u003c\/strong\u003e 0.25 to 1.65 mm for proximity output (suitable for 0.6-0-0.6 mm or 25-0-25 mils current loop)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±1.5% over specified full scale (typical)\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\u003eOperating Temperature:\u003c\/strong\u003e -35°C to +85°C (-31°F to +185°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -51°C to +100°C (-60°F to +212°F)\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\u003eMounting:\u003c\/strong\u003e DIN rail compatible\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe 991-25-70-02-05 also features non-interacting zero and span adjustments, and a Not OK\/Signal Defeat function that forces the output below 3.6 mA within 100 µs when a fault is detected.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup\u003c\/h2\u003e\u003cp\u003eMount the Bently Nevada 991-25-70-02-05 on a standard DIN rail. Connect one non-contacting 3300 NSv proximity probe and extension cable to the input. Wire the two-wire 4-20 mA loop with a supply voltage between +12 and +35 Vdc. Ensure the bulkhead screws (option 02) are properly tightened. Calibrate the zero and span using the external adjustments. The system length of 7.0 meters covers most machine train distances.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eReliable axial thrust monitoring reduces unplanned downtime. The 991-25-70-02-05 operates over a wide temperature range (-35°C to +85°C) and includes agency approvals for hazardous locations: CSA Division 2, ATEX Zone 0, ATEX Zone 2, and ABS maritime. Periodic inspection of the probe and cable integrity is recommended. The current limiting feature (23 mA typical) protects the loop during transient events.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThis Industrial Automation Module integrates seamlessly with any system accepting 4-20 mA inputs. It replaces older thrust transmitters or mechanical probes by providing a linear current loop representation of axial position. Compatible with control systems from Allen-Bradley, Siemens, ABB, and others. The Not OK\/Signal Defeat function ensures fail-safe operation.\u003c\/p\u003e\u003ch2\u003eSelection Guide\u003c\/h2\u003e\u003cp\u003eWhen ordering the Bently Nevada 991-25-70-02-05, verify your probe and cable requirements. This variant includes the -25 full-scale option (25-0-25 mils) and -70 system length (7.0 meters). For assistance, contact ubest101 (your trusted PLC Source PRO distributor) to confirm stock and agency approvals.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default","offer_id":44416917471331,"sku":"991-25-70-02-05","price":250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/991-25-70-01-CN_d1fadbb7-d523-47e1-b9b3-462affaff220.jpg?v=1785255671","url":"https:\/\/www.plcsourcepro.com\/products\/bently-nevada-991-25-70-02-05-industrial-automation-module","provider":"PLC Source PRO","version":"1.0","type":"link"}