{"product_id":"bently-nevada-990-04-70-03-01-990-vibration-transmitter","title":"Bently Nevada 990-04-70-03-01 990 Vibration Transmitter","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eIn critical rotating machinery applications, precise vibration monitoring prevents costly failures. The Bently Nevada 990-04-70-03-01 990 Vibration Transmitter delivers reliable, real-time vibration data with a 4-20 mA output. Designed for non-hazardous, Zone 2, or Div 2 hazardous areas, this transmitter accepts one 3300 NSv proximity probe and extension cable. Its compact design and robust features make it an ideal upgrade for existing vibration monitoring systems.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eThe Bently Nevada 990-04-70-03-01 includes several key performance parameters derived from the product datasheet:\u003c\/p\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\u003e0-4 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\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\u003eDIN clips and screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAgency approval option\u003c\/td\u003e\n\u003ctd\u003eCSA Division 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003eAccepts 1 non-contacting 3300 NSv Proximity Probe\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\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.43 kg (0.9 lbm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4 to 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 6,000 Hz +0, -3 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum target size\u003c\/td\u003e\n\u003ctd\u003e9.5 mm (0.375 in) diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLeadwire length (max)\u003c\/td\u003e\n\u003ctd\u003e3 meters (10 feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal defeat (Not OK)\u003c\/td\u003e\n\u003ctd\u003eOutput \u0026lt;3.6 mA within 100 µs; restored in 2-3 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eApplication Examples\u003c\/h2\u003e\u003cp\u003eThe Bently Nevada 990-04-70-03-01 is suited for monitoring vibration on pumps, compressors, turbines, and fans. In a refinery, replacing older transmitters with this module improves accuracy and reduces false trips. Its fast signal defeat response (output drops below 3.6 mA within 100 µs) protects machinery by indicating fault conditions immediately.\u003c\/p\u003e\u003cp\u003eFor power generation, the 990-04-70-03-01 provides precise 4-20 mA output proportional to 0-4 mils peak-to-peak displacement. This allows seamless integration with existing PLC and DCS systems.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eMount the Bently Nevada 990-04-70-03-01 using the included DIN clips and screws. Ensure the probe gap is set between 0.5 and 1.75 mm from the target to guarantee full-scale range. Use a shielded cable for the Proximitor Sensor output, keeping the BNC cable length under 3 meters. Power the transmitter with +12 to +35 Vdc, observing polarity. After installation, perform a zero and span adjustment using the non-interacting external adjustments.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eThe Bently Nevada 990-04-70-03-01 requires minimal routine checks. Periodically verify the loop power remains within +12 to +35 Vdc and clean the probe face to maintain accuracy. The robust current limiting (23 mA typical) protects against overcurrent events. The CSA Division 2 rating ensures safe operation in hazardous environments.\u003c\/p\u003e\u003ch2\u003eSelection Guide \u0026amp; Purchasing Advice\u003c\/h2\u003e\u003cp\u003eBefore purchasing, verify that your existing system accepts a 4-20 mA input and can accommodate the 990-04-70-03-01's full-scale option of 0-4 mils pp. Confirm the system length option of 7.0 meters matches your probe-to-transmitter distance. If you need assistance, contact the team at ubest101 for expert guidance on compatibility and accessories. The Bently Nevada 990-04-70-03-01 is available from PLC Source PRO, your trusted source for industrial automation parts.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default","offer_id":44416587464803,"sku":"990-04-70-03-01","price":245.0,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.plcsourcepro.com\/products\/bently-nevada-990-04-70-03-01-990-vibration-transmitter","provider":"PLC Source PRO","version":"1.0","type":"link"}