{"product_id":"21508-02-12-05-02-bently-nevada-proximity-sensors-21000-series","title":"21508-02-12-05-02 Bently Nevada Proximity Sensors 21000 Series","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Bently Nevada 21508-02-12-05-02 is a specialized proximity probe designed for high-accuracy vibration monitoring in industrial rotating machinery. As part of the classic Bently Nevada transducer portfolio, this probe is engineered to deliver reliable non-contact displacement measurements. For facility engineers and maintenance teams managing turbomachinery, this sensor provides the critical diagnostic data needed to monitor radial vibration and axial shaft position, ensuring that equipment operates within safe design limits.\u003c\/p\u003e\n\u003cp\u003eWhen you\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ebuy 21508-02-12-05-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esensors, you are investing in a mature, field-proven sensing technology that remains essential for many legacy monitoring systems still in active service today. As a specialist\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e21508-02-12-05-02 supplier\u003c\/strong\u003e, Maxwell PLC understands the importance of maintaining legacy protection loops. We ensure that our inventory consists of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003egenuine Bently Nevada parts\u003c\/strong\u003e, so your monitoring infrastructure remains reliable and your compliance standards are fully met.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Precision Displacement Sensing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProvides linear voltage output proportional to the gap between the probe tip and the observed shaft, ideal for vibration analysis.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRugged Industrial Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBuilt to withstand the harsh thermal and chemical environments typical of petrochemical plants and power generation facilities.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProven Reliability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eA staple design in Bently Nevada’s transducer history, offering consistent performance in demanding rotating machinery applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEMI\/RFI Immunity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOptimized to minimize interference from high-voltage electrical environments, ensuring stable signal transmission.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVersatile Application:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSuitable for a wide range of machinery, including steam turbines, centrifugal compressors, and industrial pumps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct Model\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e21508-02-12-05-02\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eManufacturer\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProbe Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eProximity Vibration Probe\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eSystem Platform\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e21000 Series\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eThreading\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1\/4-28 UNF\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProbe Case Length\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.5 inches\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eUnthreaded Length\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.2 inches\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eConnector Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMiniature Coaxial\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eAgency Approval\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eStandard Industrial\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.20 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e15.0 x 10.0 x 5.0 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eTariff Code\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8537101190\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCountry of Origin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eModel Configuration Explanation\u003c\/h3\u003e\n\u003cp\u003eThe part number 21508-02-12-05-02 follows a specific Bently Nevada configuration hierarchy:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e21508:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe series identifier for this specific proximity vibration probe.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e02:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIndicates the mounting thread and case diameter configuration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e12:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRepresents the unthreaded length (1.2 inches).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e05:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRefers to the total probe case length (0.5 inches).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e02:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSpecifies the cable interface and connection standard.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSteam and Gas Turbines:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMonitoring radial shaft vibration and rotor position.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCentrifugal Compressors:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDetecting internal mechanical faults such as rotor imbalance or instability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLarge Industrial Pumps:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTracking shaft displacement to prevent mechanical failure in process-critical pumps.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePredictive Maintenance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProviding essential inputs for TSI (Turbine Supervisory Instrumentation) systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLaboratory Testing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHighly accurate displacement measurement for research and development applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSystem Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis probe is designed for seamless integration with compatible Bently Nevada Proximitor sensors. To ensure accurate 200 mV\/mil output, the system length (probe plus extension cable) must match the requirements of the Proximitor unit. It is broadly compatible with standard 21000-series signal conditioning modules, making it an excellent replacement choice for existing monitoring arrays.\u003c\/p\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003col class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAlignment:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnsure the probe is mounted perpendicular to the target shaft to prevent non-linear output.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGap Setting:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUse a feeler gauge to achieve the specified initial gap (check your site-specific Proximitor calibration).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCable Management:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSecure the coaxial cable using industrial ties every 30-50 cm to prevent stress on the probe tip or connector.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShielding:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMaintain shield integrity through the entire cabling path to prevent RFI noise from affecting the vibration waveform.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eProduct Advantages\u003c\/h3\u003e\n\u003cp\u003eBy choosing to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ebuy 21508-02-12-05-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eunits, you avoid the risks associated with non-OEM components, which often fail to meet the rigorous calibration standards required for Bently Nevada systems. Maxwell PLC provides\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eindustrial automation spare parts\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ethat you can trust for 24\/7 protection. Our genuine parts ensure your monitoring system remains accurate, minimizing the chance of undetected mechanical wear or \"false-trip\" events.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cp\u003eWe maintain the 21508-02-12-05-02\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ein stock\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto support your maintenance schedules. For an accurate\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e21508-02-12-05-02 price\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eor to check current availability for your project, please reach out to our sales team. We offer fast, international shipping to keep your operations running.\u003c\/p\u003e\n\u003ch3\u003eLogistics and Shipping\u003c\/h3\u003e\n\u003cp\u003eWe prioritize the safety of your instrumentation during transit. Every probe is shipped in professional\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eanti-static industrial packaging\u003c\/strong\u003e, preventing electrostatic discharge (ESD) damage and providing robust protection against the impacts of global logistics. Your components arrive in factory-pristine condition, ready for the machine floor.\u003c\/p\u003e\n\u003ch3\u003eWhy Choose Maxwell PLC\u003c\/h3\u003e\n\u003cp\u003eWith 30 years of experience in the industrial sector, Maxwell PLC provides more than just hardware; we provide assurance. We have cultivated direct, long-standing relationships with leading manufacturers, allowing us to guarantee the authenticity of every item we provide. Before shipment, our technical team performs a rigorous inspection and functional test of the unit. We provide detailed testing reports upon request, giving your engineers the documentation they need to verify system health before installation.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a genuine Bently Nevada sensor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, we specialize in providing 100% genuine Bently Nevada industrial automation spare parts.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs the 21508-02-12-05-02 in stock?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, we keep this model in our active inventory to ensure rapid delivery.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this probe require a special mounting bracket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt uses standard thread configurations, but ensure your site bracket is compatible with the 1\/4-28 UNF thread.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this to replace older sensors?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, this model is designed for backward compatibility with 21000-series monitoring racks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDo you ship internationally?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, we have a robust global logistics network serving industrial sites everywhere.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the typical lead time?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOrders for in-stock items are generally processed and dispatched within 24 hours.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I get a volume discount for a plant turnaround?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, contact our sales department for tiered pricing for large-scale maintenance or bulk replacements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if the part is faulty upon receipt?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe perform pre-shipment tests to ensure quality; in the rare event of an issue, we provide full support and warranty service.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDo you provide technical support?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOur team of experts, with 30 years in the industry, is here to provide technical guidance for installation and troubleshooting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs a certificate of origin included?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, all necessary compliance and origin documentation are provided with every shipment.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eRelated Models\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 21504-00-40-10-02\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 330101-00-08-10-02-00\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 330106-05-30-20-02-CN\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 330880-00-20-038-00-02\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 3500\/42M (176449-01)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBently Nevada 330780-50-00\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45518863335597,"sku":"21508-02-12-05-02","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/bently-nevada-21508-02-12-05-02-probe-proximity-vibration-yswncmxd4qp.jpg?v=1766980430","url":"https:\/\/www.maxwellplc.com\/products\/21508-02-12-05-02-bently-nevada-proximity-sensors-21000-series","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}