{"product_id":"990-05-70-02-cn-bently-nevada-990-vibration-transmitter","title":"990-05-70-02-CN | Bently Nevada | 990 Vibration Transmitter","description":"\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003e990 vibration transmitter\u003c\/strong\u003e converts proximity probe displacement into a proportional \u003cstrong\u003e4–20 mA vibration signal\u003c\/strong\u003e for continuous monitoring of rotating machinery. It is designed for compact OEM installations where vibration indication is required for control logic rather than full diagnostic analysis.\u003c\/p\u003e\n\u003cp\u003eThis configuration (\u003cstrong\u003e990-05-70-02-CN\u003c\/strong\u003e) uses a bulkhead-mounted housing and supports a 7.0 meter probe system length based on the \u003cstrong\u003e3300 NSv proximity probe platform\u003c\/strong\u003e. The measurement output represents peak-to-peak vibration amplitude under steady-state operating conditions.\u003c\/p\u003e\n\u003cp\u003eThe transmitter is typically installed close to machinery skid assemblies or panel structures where rigid mounting is preferred. Signal conditioning is fully integrated, eliminating the need for external Proximitor modules.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTwo-wire loop-powered vibration transmitter\u003c\/li\u003e\n\u003cli\u003e4–20 mA proportional vibration output\u003c\/li\u003e\n\u003cli\u003eCompatible with 3300 NSv proximity probe system\u003c\/li\u003e\n\u003cli\u003eIntegrated signal conditioning electronics\u003c\/li\u003e\n\u003cli\u003eBulkhead screw mounting configuration\u003c\/li\u003e\n\u003cli\u003eExternal zero and span adjustment capability\u003c\/li\u003e\n\u003cli\u003ePROX OUT diagnostic signal access\u003c\/li\u003e\n\u003cli\u003ePower-up inhibit and NOT OK fault indication\u003c\/li\u003e\n\u003cli\u003eDesigned for OEM machinery protection loops\u003c\/li\u003e\n\u003cli\u003eSuitable for compact installation environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCentrifugal compressors\u003c\/li\u003e\n\u003cli\u003eIndustrial pump systems\u003c\/li\u003e\n\u003cli\u003eCooling and ventilation fans\u003c\/li\u003e\n\u003cli\u003eElectric motor assemblies\u003c\/li\u003e\n\u003cli\u003eOEM packaged rotating equipment\u003c\/li\u003e\n\u003cli\u003eAuxiliary vibration monitoring points\u003c\/li\u003e\n\u003cli\u003eSmall to medium rotating machinery skids\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ch3\u003eGeneral\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e990-05-70-02-CN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e2-Wire Vibration Transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput\u003c\/td\u003e\n\u003ctd\u003e3300 NSv proximity probe system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput\u003c\/td\u003e\n\u003ctd\u003e4–20 mA vibration signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull-scale Range\u003c\/td\u003e\n\u003ctd\u003e0–5 mils pp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Length\u003c\/td\u003e\n\u003ctd\u003e7.0 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eElectrical\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoop Configuration\u003c\/td\u003e\n\u003ctd\u003e2-wire loop powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Loop Resistance\u003c\/td\u003e\n\u003ctd\u003e1000 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEnvironmental\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-35 C to +85 C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-51 C to +100 C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e100% condensing (non-submerged)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eMechanical\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmitter Weight\u003c\/td\u003e\n\u003ctd\u003e0.43 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal System Weight\u003c\/td\u003e\n\u003ctd\u003e0.82 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Target Size\u003c\/td\u003e\n\u003ctd\u003e9.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Style\u003c\/td\u003e\n\u003ctd\u003eBulkhead mounted enclosure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch2\u003eConnections \/ Interfaces\u003c\/h2\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eTerminal\u003c\/th\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLOOP +\u003c\/td\u003e\n\u003ctd\u003e4–20 mA output \/ power input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCOM\u003c\/td\u003e\n\u003ctd\u003eSignal reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePROX OUT\u003c\/td\u003e\n\u003ctd\u003eRaw vibration signal for diagnostics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTEST\u003c\/td\u003e\n\u003ctd\u003eLoop verification input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch2\u003eInstallation Guidelines\u003c\/h2\u003e\n\u003cp\u003eThe transmitter is intended for rigid mounting using bulkhead screw fixation. Installation should ensure stable mechanical coupling between enclosure and mounting surface to avoid resonance-induced signal variation.\u003c\/p\u003e\n\u003cp\u003eProbe cable routing must avoid parallel alignment with high-power conductors to reduce EMI coupling. Shield termination should be implemented at a single grounding point.\u003c\/p\u003e\n\u003cp\u003eDuring commissioning, verify probe gap alignment and confirm stable loop current under normal machine operating conditions before enabling alarm logic in the control system.\u003c\/p\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the main function of this transmitter?\u003c\/strong\u003e\u003cbr\u003eIt converts proximity probe vibration into a 4–20 mA signal for monitoring systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat probe system is required?\u003c\/strong\u003e\u003cbr\u003eIt is designed for the Bently Nevada 3300 NSv probe system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the bulkhead mounting provide?\u003c\/strong\u003e\u003cbr\u003eIt allows rigid installation directly onto panels or machine skids.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a diagnostic vibration system?\u003c\/strong\u003e\u003cbr\u003eNo, it is intended for trend-level monitoring only.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is PROX OUT used for?\u003c\/strong\u003e\u003cbr\u003eIt provides raw vibration signal access for maintenance diagnostics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if a probe fault occurs?\u003c\/strong\u003e\u003cbr\u003eThe output drops to indicate a NOT OK condition.\u003c\/p\u003e\n\u003ch2\u003eOrdering Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: 990 Vibration Transmitter\u003c\/li\u003e\n\u003cli\u003eFull-scale Option: 05 = 0–5 mils pp\u003c\/li\u003e\n\u003cli\u003eSystem Length Option: 70 = 7.0 meters\u003c\/li\u003e\n\u003cli\u003eMounting Option: 02 = Bulkhead screws\u003c\/li\u003e\n\u003cli\u003eAgency Option: CN variant marking\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52668308423019,"sku":"990-05-70-02-CN","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/990-05-70-02-CN-oaygg0ehdlq_bde42cfa-7566-42f5-8e4a-d0f6bc82e176.jpg?v=1765520754","url":"https:\/\/www.plcprotech.com\/products\/990-05-70-02-cn-bently-nevada-990-vibration-transmitter","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}