{"product_id":"bently-nevada-990-04-70-02-00-2-wire-vibration-transmitter","title":"Bently Nevada 990-04-70-02-00 2-Wire Vibration Transmitter","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e990-04-70-02-00\u003c\/strong\u003e is a loop-powered vibration transmitter designed for straightforward integration into rotating equipment protection and monitoring systems. It translates proximity probe vibration input into a standard 4 to 20 mA signal for use in PLC and DCS environments, focusing on stable long-term trending rather than full diagnostic vibration analysis.\u003c\/p\u003e\n\u003cp\u003eThis version uses a \u003cstrong\u003ebulkhead screw mounting design\u003c\/strong\u003e, making it more suitable for installations where panel surface mounting is preferred over DIN rail systems. In practice, it is often selected for compact OEM skids, retrofit panels, or locations where mechanical fixation strength is prioritized over modular rail layouts.\u003c\/p\u003e\n\u003cp\u003eEngineers typically deploy this model on compressors, pumps, and small rotating machines where vibration thresholds need continuous supervision without adding complexity to the control architecture. The integrated signal conditioning electronics reduce external wiring and simplify commissioning during machine build or site installation.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003e0-4 mils pp full-scale range\u003c\/strong\u003e supports tighter vibration resolution, which is useful in applications requiring early detection of mechanical wear or imbalance trends.\u003c\/p\u003e\n\u003ch3\u003eKey Design Characteristics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2-wire loop-powered vibration transmitter architecture\u003c\/li\u003e\n\u003cli\u003eConverts proximity probe input into 4 to 20 mA signal\u003c\/li\u003e\n\u003cli\u003eCompatible with 3300 NSv probe systems\u003c\/li\u003e\n\u003cli\u003eBulkhead screw mounting for direct panel installation\u003c\/li\u003e\n\u003cli\u003eIntegrated Proximitor signal conditioning module\u003c\/li\u003e\n\u003cli\u003eCompact sealed industrial housing\u003c\/li\u003e\n\u003cli\u003eSupports basic vibration trending applications\u003c\/li\u003e\n\u003cli\u003eAccess to raw vibration signal via PROX OUT\u003c\/li\u003e\n\u003cli\u003eExternal zero and span adjustment capability\u003c\/li\u003e\n\u003cli\u003eDesigned for continuous industrial operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eEquipment Type\u003c\/th\u003e\n\u003cth\u003eMonitoring Purpose\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmall centrifugal compressors\u003c\/td\u003e\n\u003ctd\u003eShaft vibration monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndustrial pumps\u003c\/td\u003e\n\u003ctd\u003eBearing condition trending\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFans and ventilation systems\u003c\/td\u003e\n\u003ctd\u003eImbalance detection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM machinery packages\u003c\/td\u003e\n\u003ctd\u003eEmbedded vibration feedback\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcess skids\u003c\/td\u003e\n\u003ctd\u003eContinuous condition monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuxiliary drive systems\u003c\/td\u003e\n\u003ctd\u003eBasic protection logic input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eOrdering Structure\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eCode Description\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 Vibration Transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull-scale Option\u003c\/td\u003e\n\u003ctd\u003e-04 = 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\u003e-70 = 7.0 metres (23.0 feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Option\u003c\/td\u003e\n\u003ctd\u003e-02 = Bulkhead screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAgency Approval Option\u003c\/td\u003e\n\u003ctd\u003e-00 = Not required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eTechnical Summary\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\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e990-04-70-02-00\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\u003eAvailability\u003c\/td\u003e\n\u003ctd\u003eIn Stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eNew \u0026amp; Original in Factory Packing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFactory Warranty\u003c\/td\u003e\n\u003ctd\u003e12 Months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Source\u003c\/td\u003e\n\u003ctd\u003e3300 NSv proximity probe system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003e+12 to +35 Vdc loop supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull-scale Range\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 Cable Length\u003c\/td\u003e\n\u003ctd\u003e7.0 metres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Method\u003c\/td\u003e\n\u003ctd\u003eBulkhead screw fixation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-35 degC to +85 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-51 degC to +100 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e0.54 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInterface Overview\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eTerminal \/ Interface\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\u003eProbe Input\u003c\/td\u003e\n\u003ctd\u003eAccepts 3300 NSv proximity probe signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4-20 mA Output\u003c\/td\u003e\n\u003ctd\u003eVibration signal to PLC\/DCS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Input\u003c\/td\u003e\n\u003ctd\u003eLoop-powered DC supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePROX OUT\u003c\/td\u003e\n\u003ctd\u003eDynamic vibration diagnostic output\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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Notes (Engineering Perspective)\u003c\/h3\u003e\n\u003cp\u003eThis version is typically installed directly onto a control panel surface using bulkhead screws, which provides better mechanical rigidity in environments with vibration or limited DIN rail availability.\u003c\/p\u003e\n\u003cp\u003eCable routing should maintain separation between low-level probe wiring and high-current conductors to reduce induced noise. Proper shielding and grounding practices are important for maintaining signal stability over long cable runs.\u003c\/p\u003e\n\u003cp\u003eDuring commissioning, verify probe gap alignment before energizing the loop. Once operational, confirm that the 4 to 20 mA signal stabilizes under steady machine conditions before enabling protection logic in the control system.\u003c\/p\u003e\n\u003cp\u003eThe PROX OUT interface should be used only with appropriate isolated measurement equipment to avoid ground loop effects.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy choose bulkhead screw mounting for this model?\u003c\/strong\u003e\u003cbr\u003eIt is preferred when panel rigidity and fixed mechanical mounting are required instead of DIN rail flexibility.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this transmitter suitable for PLC integration?\u003c\/strong\u003e\u003cbr\u003eYes, it provides a standard 4 to 20 mA output designed for PLC analog input modules.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat probe system is required?\u003c\/strong\u003e\u003cbr\u003eIt is designed for use with the Bently Nevada 3300 NSv proximity probe family.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the purpose of the 0-4 mils range?\u003c\/strong\u003e\u003cbr\u003eIt provides higher resolution vibration monitoring for tighter mechanical tolerances.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it support diagnostic signal access?\u003c\/strong\u003e\u003cbr\u003eYes, PROX OUT provides raw vibration data for external analysis tools.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a rack-based monitoring system?\u003c\/strong\u003e\u003cbr\u003eNo, it is a standalone transmitter intended for simplified machine protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens during probe failure?\u003c\/strong\u003e\u003cbr\u003eThe output drops to a fault condition below normal operating current levels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat environments can it operate in?\u003c\/strong\u003e\u003cbr\u003eIt is designed for industrial environments with temperatures from -35 degC to +85 degC.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be used on compressors and pumps?\u003c\/strong\u003e\u003cbr\u003eYes, it is commonly used on small rotating machinery such as compressors and pumps.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this version available immediately?\u003c\/strong\u003e\u003cbr\u003eYes, it is listed as in stock.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52666858504555,"sku":"990-04-70-02-00","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bently-nevada-990-04-70-02-00-vibration-transmitter-bipupyjwwre_1e9723c0-7f5c-48e5-a9e1-5e555f6e3465.jpg?v=1765449239","url":"https:\/\/www.plcprotech.com\/products\/bently-nevada-990-04-70-02-00-2-wire-vibration-transmitter","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}