{"product_id":"bently-nevada-991-25-70-02-00-industrial-automation-module","title":"Bently Nevada 991-25-70-02-00 Industrial Automation Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eWhen axial thrust monitoring requires high reliability, the Bently Nevada 991-25-70-02-00 Probe Vibration Transmitter delivers precise 4-20 mA output. This industrial automation module is designed for axial position measurement using a 3300 NSv proximity probe. The 991-25-70-02-00 offers a full-scale range of 25-0-25 mils and operates from +12 to +35 Vdc.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eKey parameters of the Bently Nevada 991-25-70-02-00 include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Signal:\u003c\/strong\u003e 4-20 mA over full-scale range (2-wire)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e Within ±1.5% of full scale (typical)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax 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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.43 kg (0.9 lbm)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eLinear range for proximity output is 0.25 to 1.65 mm. Suitable for 0.6-0-0.6 mm or 25-0-25 mils current loop ranges. The unit accepts one non-contacting 3300 NSv probe and extension cable.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eMount the Bently Nevada 991-25-70-02-00 on a DIN rail using bulkhead screws (mounting option 02). Connect the 3300 NSv proximity probe and extension cable. Provide +12 to +35 Vdc at the transmitter terminal. Use non-interacting external adjustments for zero and span. The 4-20 mA output is in 2-wire configuration. Ensure loop resistance does not exceed 1,000 Ω.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eThe 991-25-70-02-00 includes a Not OK\/Signal Defeat feature. Signal output drops below 3.6 mA within 100 µs upon a detected fault, and restores within 0.1 seconds after the fault clears. This fail-safe behavior minimizes downtime. For ongoing reliability, verify power supply stability and loop resistance. The transmitter operates reliably from -35°C to +85°C and stores from -51°C to +100°C.\u003c\/p\u003e\u003ch2\u003eTroubleshooting Common Issues\u003c\/h2\u003e\u003cp\u003eIf output remains below 3.6 mA, check for an active Not OK condition (probe fault, cable break, power loss). Use the test signal input to verify accuracy. Confirm power supply meets +12 to +35 Vdc requirement. Excessive loop resistance (over 1,000 Ω) may reduce output signal swing. Adjust zero and span only with the probe in proper position. The current limiting at 23 mA protects the loop.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default","offer_id":44416902496355,"sku":"991-25-70-02-00","price":254.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/991-25-70-01-CN_908e4691-b3c1-4af0-8213-49775dc68685.jpg?v=1785255488","url":"https:\/\/www.plcsourcepro.com\/products\/bently-nevada-991-25-70-02-00-industrial-automation-module","provider":"PLC Source PRO","version":"1.0","type":"link"}