{"product_id":"bently-nevada-990-04-70-03-cn-industrial-automation-module","title":"Bently Nevada 990-04-70-03-CN Industrial Automation Module","description":"\u003ch2\u003eProduct Introduction\u003c\/h2\u003e\u003cp\u003eWhen unexpected machinery vibration threatens production uptime, the Bently Nevada 990-04-70-03-CN provides accurate, real-time vibration monitoring. This 990 Vibration Transmitter accepts one non-contacting 3300 NSv Proximity Probe and extension cable, converting vibration into a 4-20 mAdc signal. The 990-04-70-03-CN is designed for continuous condition monitoring in industrial environments, helping detect developing faults before they cause catastrophic failure.\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\u003e04: 0-4 mils pp (0-100 μm pp)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Length Option\u003c\/td\u003e\n\u003ctd\u003e70: 7.0 meters (23.0 feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Option\u003c\/td\u003e\n\u003ctd\u003e03: DIN clips and screws\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\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\u003eTransmitter Weight\u003c\/td\u003e\n\u003ctd\u003e0.43 kg (0.9 lbm)\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 specified full-scale range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e5 Hz to 6,000 Hz +0, -3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Gap Range\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\u003eNOT OK\/Signal Defeat\u003c\/td\u003e\n\u003ctd\u003eOutput goes below 3.6 mA within 100 µs after Not OK condition\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 990-04-70-03-CN excels in rotating machinery protection. Typical applications include monitoring sleeve bearing vibration in pumps, compressors, turbines, and fans. In a petrochemical plant, early detection of shaft vibration using the 990-04-70-03-CN prevented a unplanned shutdown by alerting operators to a developing imbalance. Its 4-20 mA output integrates directly with PLCs and DCS systems for seamless alarm and trip logic.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eWhen installing the Bently Nevada 990-04-70-03-CN, ensure the probe is gapped between 0.5 and 1.75 mm from the target to guarantee full-scale range. Use the supplied DIN clips and screws for secure mounting. The power supply must provide +12 to +35 Vdc at the transmitter terminal. For Proximitor Sensor Output via BNC connector, keep cable distance under 3 meters (10 feet). The zero and span adjustments are non-interacting, simplifying calibration.\u003c\/p\u003e\u003ch2\u003eTroubleshooting \u0026amp; Common Issues\u003c\/h2\u003e\u003cp\u003eA common issue with vibration transmitters is signal loss due to improper gap setting. The 990-04-70-03-CN includes NOT OK\/signal defeat functionality: if a fault occurs (e.g., probe damage), the output drops below 3.6 mA within 100 µs, providing a definite diagnostic indicator. After the fault clears, output restores within 2-3 seconds. If readings appear erratic, verify loop resistance does not exceed 1,000 Ω. Current limiting at 23 mA typical prevents damage from short circuits.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eFor long-term reliability, periodically inspect the probe face for contamination and verify cable integrity. The 990-04-70-03-CN operates in non-hazardous, Zone 2, or Div 2 hazardous area locations with a 28 V power supply. Routine checks of the 4-20 mA loop accuracy against a calibrated reference ensure measurement integrity. Its compact design (0.43 kg) and rugged construction minimize maintenance needs, reducing total cost of ownership.\u003c\/p\u003e\u003ch2\u003eBuying Guide\u003c\/h2\u003e\u003cp\u003eBefore purchasing the Bently Nevada 990-04-70-03-CN, confirm compatibility with your existing 3300 NSv probe and extension cable. Verify the full-scale range (0-4 mils pp) matches your application. For reliable sourcing, trust ubest101 as your industrial automation parts supplier. They provide genuine, factory-sealed modules backed by quality assurance.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default","offer_id":44416589201507,"sku":"990-04-70-03-CN","price":250.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.plcsourcepro.com\/products\/bently-nevada-990-04-70-03-cn-industrial-automation-module","provider":"PLC Source PRO","version":"1.0","type":"link"}