{"product_id":"bently-nevada-990-04-50-02-cn-2-wire-vibration-transmitter","title":"Bently Nevada 990-04-50-02-CN Émetteur de vibration 2 fils","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e990-04-50-02-CN\u003c\/strong\u003e is a loop-powered vibration transmitter designed for converting proximity probe signals into a standardized 4 to 20 mA output for machinery monitoring systems. It is used in rotating equipment applications where vibration needs to be continuously tracked without deploying a full vibration monitoring rack.\u003c\/p\u003e\n\u003cp\u003eThis configuration is typically chosen when a \u003cstrong\u003ebulkhead-mounted installation\u003c\/strong\u003e is preferred over DIN rail mounting. In practical panel design, this is often the case when engineers want the transmitter fixed directly to the enclosure wall for improved mechanical stability or simplified wiring layout.\u003c\/p\u003e\n\u003cp\u003eThe device is intended for use with a 3300 NSv proximity probe system and supports a 5.0 meter system length. This makes it suitable for compact to medium-sized rotating machinery installations such as compressors, pumps, and fan assemblies where probe routing remains relatively short and controlled.\u003c\/p\u003e\n\u003cp\u003eFrom a field engineering perspective, this version is often used when installation rigidity and straightforward panel layout take priority over modular mounting flexibility.\u003c\/p\u003e\n\u003ch3\u003eEngineering Characteristics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2-wire loop-powered vibration transmitter architecture\u003c\/li\u003e\n\u003cli\u003eConverts proximity probe displacement into 4–20 mA output\u003c\/li\u003e\n\u003cli\u003eDesigned for 3300 NSv probe system compatibility\u003c\/li\u003e\n\u003cli\u003eBulkhead screw mounting for direct enclosure installation\u003c\/li\u003e\n\u003cli\u003eIntegrated signal conditioning electronics\u003c\/li\u003e\n\u003cli\u003eStable output for continuous vibration trending\u003c\/li\u003e\n\u003cli\u003eExternal zero\/span adjustment for calibration\u003c\/li\u003e\n\u003cli\u003ePROX OUT available for diagnostic signal access\u003c\/li\u003e\n\u003cli\u003eFault detection with current drop behavior on signal failure\u003c\/li\u003e\n\u003cli\u003eSealed compact industrial housing design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplication Context\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\u003ePractical Role\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCentrifugal 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 tracking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFans and blowers\u003c\/td\u003e\n\u003ctd\u003eImbalance detection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM skid packages\u003c\/td\u003e\n\u003ctd\u003eEmbedded protection input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcess auxiliary systems\u003c\/td\u003e\n\u003ctd\u003ePLC-based alarm input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGeneral rotating equipment\u003c\/td\u003e\n\u003ctd\u003eContinuous vibration trending\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\u003eSegment\u003c\/th\u003e\n\u003cth\u003eCode Meaning\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\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\u003e50 = 5.0 meters (16.4 feet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Option\u003c\/td\u003e\n\u003ctd\u003e02 = Bulkhead screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAgency Option\u003c\/td\u003e\n\u003ctd\u003eCN configuration variant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEnvironmental Limits\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\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature (Transmitter)\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 (Transmitter)\u003c\/td\u003e\n\u003ctd\u003e-52 C to +100 C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature (Probe)\u003c\/td\u003e\n\u003ctd\u003e-52 C to +177 C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature (Probe)\u003c\/td\u003e\n\u003ctd\u003e-52 C to +177 C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\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 Data\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\u003e990-04-50-02-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\u003eMinimum Target Size\u003c\/td\u003e\n\u003ctd\u003e9.5 mm (0.375 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (H x W x D)\u003c\/td\u003e\n\u003ctd\u003e53.3 mm x 73.9 mm x 100.1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody Height (without DIN clip)\u003c\/td\u003e\n\u003ctd\u003e42.6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Hole Distance\u003c\/td\u003e\n\u003ctd\u003e63.5 mm x 69.9 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Hole Diameter\u003c\/td\u003e\n\u003ctd\u003e5.8 mm\u003c\/td\u003e\n\u003c\/tr\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\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\u003eInterface\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\u003e3300 NSv proximity probe connection\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 system\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\u003eRaw 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 (Field Engineering View)\u003c\/h3\u003e\n\u003cp\u003eBulkhead mounting changes the mechanical behavior of the installation compared to DIN rail versions. In real panel work, this model is usually mounted directly onto the enclosure wall to reduce movement and improve strain resistance on wiring.\u003c\/p\u003e\n\u003cp\u003eCable routing should be planned to avoid long parallel runs with motor feeders or inverter output cables. This is especially important in compressor and pump packages where electromagnetic noise can distort low-level probe signals.\u003c\/p\u003e\n\u003cp\u003eBefore system start-up, probe gap alignment should be verified carefully. After power-up, allow the loop signal to stabilize under steady machine conditions before enabling alarm logic in the control system.\u003c\/p\u003e\n\u003cp\u003ePROX OUT is typically used during commissioning or troubleshooting rather than continuous operation.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy choose bulkhead mounting for this version?\u003c\/strong\u003e\u003cbr\u003eIt provides a fixed mechanical installation point directly on the enclosure wall.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this compatible with PLC systems?\u003c\/strong\u003e\u003cbr\u003eYes, it outputs a standard 4–20 mA signal for PLC or DCS inputs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat probe system does it require?\u003c\/strong\u003e\u003cbr\u003eIt is designed for Bently Nevada 3300 NSv proximity probes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a full diagnostic system?\u003c\/strong\u003e\u003cbr\u003eNo, it is intended for vibration trending and basic protection logic.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the function of PROX OUT?\u003c\/strong\u003e\u003cbr\u003eIt provides raw vibration signal output for diagnostic measurement tools.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if the probe fails?\u003c\/strong\u003e\u003cbr\u003eThe output drops to a low-current fault state.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere is it typically used?\u003c\/strong\u003e\u003cbr\u003eOn compressors, pumps, fans, and other rotating machinery.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it require external signal conditioning?\u003c\/strong\u003e\u003cbr\u003eNo, conditioning is fully integrated into the transmitter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it suitable for skid-mounted equipment?\u003c\/strong\u003e\u003cbr\u003eYes, especially where rigid enclosure mounting is preferred.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it operate in humid environments?\u003c\/strong\u003e\u003cbr\u003eYes, it is designed for high humidity and condensing conditions.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52666861125995,"sku":"990-04-50-02-CN","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bently-nevada-990-04-50-02-cn-vibration-monitor-4epp5ugexd4_8904adbf-22ea-4ebc-98e7-af0a99c75075.jpg?v=1765449302","url":"https:\/\/www.plcprotech.com\/fr\/products\/bently-nevada-990-04-50-02-cn-2-wire-vibration-transmitter","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}