{"product_id":"bently-nevada-990-08-70-02-cn-industrial-automation-module","title":"Bently Nevada 990-08-70-02-CN Industrial Automation Module","description":"\u003ch2\u003eProduct Introduction\u003c\/h2\u003e\u003cp\u003eWhen undetected bearing faults or rotor imbalances threaten critical machinery, the Bently Nevada 990-08-70-02-CN provides reliable vibration monitoring to prevent catastrophic failures. This 990 Vibration Transmitter accepts one non-contacting 3300 NSv Proximity Probe and extension cable, converting probe signals into a 4-20 mA loop output. With a full-scale range of 0-8 mils pp (0-200 μm pp) and a system length of 7.0 meters (23.0 feet), it is designed for continuous vibration monitoring in demanding industrial environments.\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\u003e0-8 mils pp (0-200 μm pp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Length\u003c\/td\u003e\n\u003ctd\u003e7.0 meters (23.0 feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Option\u003c\/td\u003e\n\u003ctd\u003eBulkhead screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003e1 non-contacting 3300 NSv Proximity Probe and extension cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\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\u003eMaximum Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1000 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\u003e4-20 mA Loop Accuracy\u003c\/td\u003e\n\u003ctd\u003eWithin ±1.5% over full-scale range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Gap\u003c\/td\u003e\n\u003ctd\u003e0.5 to 1.75 mm (20 to 55 mils)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e5 Hz to 6000 Hz +0, 3 dB\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\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe Bently Nevada 990-08-70-02-CN excels in rotating machinery applications such as turbines, centrifugal pumps, compressors, and motors. In a petrochemical plant, for example, continuous vibration monitoring with this transmitter can detect imbalance or misalignment early, reducing unplanned downtime. Its 4-20 mA output integrates seamlessly with PLCs, DCS systems, and standalone vibration monitors, enabling proactive maintenance strategies.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eMount the Bently Nevada 990-08-70-02-CN using the bulkhead screw option in a suitable enclosure near the monitored machinery. The probe must be gapped between 0.5 and 1.75 mm (20 and 55 mils) from the target to ensure full-scale range. Use a shielded cable for the probe and extension; the leadwire from the transmitter to the power supply should not exceed 3 meters (10 feet) for proximity output (BNC connector). Power the unit with +12 to +35 Vdc, observing polarity. After installation, perform a zero and span adjustment using the non-interacting external potentiometers.\u003c\/p\u003e\u003ch2\u003eTroubleshooting \u0026amp; Common Issues\u003c\/h2\u003e\u003cp\u003eIf the signal output drops below 3.6 mA, the Bently Nevada 990-08-70-02-CN has detected a NOT OK condition (e.g., probe gap out of range or internal fault). The output will go low within 100 µs and restore within 2-3 seconds after the fault clears. To diagnose loop issues, measure voltage across a 250 Ω resistor and compare with expected 4-20 mA values. Verify the probe gap using a dial gauge; adjust if outside 0.5-1.75 mm. For persistent current limiting at 23 mA, check cable resistance and ensure total loop resistance (including cable) does not exceed 1000 Ω at 35 Vdc.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eBefore ordering the Bently Nevada 990-08-70-02-CN, confirm your full-scale requirement (0-8 mils pp), system length (7.0 meters), mounting preference (bulkhead screws), and agency approval (CN for country-specific approvals). The transmitter requires a compatible 3300 NSv proximity probe and extension cable – ensure these are sourced separately if not included. For reliable supply of this industrial automation module, contact ubest101, a trusted source for PLC and DCS spares.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default","offer_id":44416616693859,"sku":"990-08-70-02-CN","price":238.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/990-08-70-02-CN-1_93cdca96-d20c-4d95-9b51-e182fef3078e.jpg?v=1785247378","url":"https:\/\/www.plcsourcepro.com\/products\/bently-nevada-990-08-70-02-cn-industrial-automation-module","provider":"PLC Source PRO","version":"1.0","type":"link"}