{"product_id":"bently-nevada-21504-012-028-10-02-3300-series-proximity-probe","title":"Bently Nevada 21504-012-028-10-02 3300 Series Proximity Probe","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eEngineered for high-precision, non-contact displacement and vibration measurements, the \u003cstrong\u003e21504-012-028-10-02\u003c\/strong\u003e represents a dependable industrial solution for monitoring critical rotating machinery. This 8mm proximity probe operates as part of a classic eddy current transducer system, delivering continuous dynamic shaft movement data to machinery protection systems.\u003c\/p\u003e\n\n\u003cp\u003eThe sensor configuration features a standard 3\/8-24 threaded body with an unthreaded section of 1.2 inches and a total case length of 2.8 inches. It includes a 1.0-meter integrated coaxial cable terminated with a miniature male coaxial connector, designed to interface seamlessly with standard extension cables and proximitor sensors. Built to survive harsh industrial environments, this probe provides consistent, linear calibration across its active measurement range.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eStandard 8mm probe tip diameter for industrial machinery measurements.\u003c\/li\u003e\n  \u003cli\u003eRugged 3\/8-24 UNF-2A threaded case body.\u003c\/li\u003e\n  \u003cli\u003e1.2-inch unthreaded case length option for precise mechanical standoff adjustment.\u003c\/li\u003e\n  \u003cli\u003e2.8-inch overall case length suitable for standard machine casing profiles.\u003c\/li\u003e\n  \u003cli\u003e1.0-meter flexible coaxial cable with miniature male connector.\u003c\/li\u003e\n  \u003cli\u003eNon-armored lead configuration optimized for structured conduit routing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSteam and gas turbine shaft vibration and axial position monitoring.\u003c\/li\u003e\n  \u003cli\u003eIndustrial compressor and expander radial displacement detection.\u003c\/li\u003e\n  \u003cli\u003eBoiler feed pump shaft dynamic movement analysis.\u003c\/li\u003e\n  \u003cli\u003eHydroelectric generator thrust bearing and oil film thickness monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003cstrong\u003eParameter\u003c\/strong\u003e\n      \u003cstrong\u003eSpecification\u003c\/strong\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\u003ePart Number\u003c\/td\u003e\n      \u003ctd\u003e21504-012-028-10-02\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProbe Diameter\u003c\/td\u003e\n      \u003ctd\u003e8 mm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eThread Type\u003c\/td\u003e\n      \u003ctd\u003eStandard 3\/8-24 UNF-2A\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eUnthreaded Length\u003c\/td\u003e\n      \u003ctd\u003e1.2 inches\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eOverall Case Length\u003c\/td\u003e\n      \u003ctd\u003e2.8 inches\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eTotal Cable Length\u003c\/td\u003e\n      \u003ctd\u003e1.0 meter (Tolerance: +0.25 m, -0.10 m)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eConnector Type\u003c\/td\u003e\n      \u003ctd\u003eMiniature male coaxial connector (02 option)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eArmor Option\u003c\/td\u003e\n      \u003ctd\u003eNo Lead Armor\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCalibrated Range\u003c\/td\u003e\n      \u003ctd\u003e80 mils (2.0 mm), starting approx. 10 mils (0.25 mm) from probe face\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eSystem Input Voltage\u003c\/td\u003e\n      \u003ctd\u003e-17.5 Vdc to -26 Vdc (provided via Proximitor sensor)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n      \u003ctd\u003e12 mA maximum\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eCountry of Origin\u003c\/td\u003e\n      \u003ctd\u003eUnited States\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eShipping Weight\u003c\/td\u003e\n      \u003ctd\u003e3 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eConnections and Interfaces\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003cthead\u003e\n    \u003ctr\u003e\n      \u003cth\u003eConnection Interface\u003c\/th\u003e\n      \u003cth\u003eFunction \/ Description\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eMiniature Male Coaxial Connector\u003c\/td\u003e\n      \u003ctd\u003eConnects to the matching female connector of the Proximitor extension cable. Provides high-frequency signal transmission with minimal impedance mismatch.\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003eProbe Tip Face\u003c\/td\u003e\n      \u003ctd\u003eGenerates the high-frequency electromagnetic field for non-contact target sensing. Must remain clear of surrounding metal structures.\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Engagement \u0026amp; Mounting:\u003c\/strong\u003e Hand-tighten the probe into the threaded mounting hole, then lock it securely in place with a locknut once the gap distance is calibrated. Do not exceed standard torque ratings for 3\/8-24 brass or stainless steel hardware.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTarget Gap Calibration:\u003c\/strong\u003e Adjust the electrical gap using a digital voltmeter connected to the Proximitor output. Calibrate to the center of the linear range (typically -10 Vdc to -12 Vdc bias voltage, representing approximately 40 to 50 mils gap).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSide Clearance:\u003c\/strong\u003e Maintain a minimum counterbore diameter and side clearance from surrounding conductive metal parts to prevent side-viewing interference and calibration errors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCable Protection:\u003c\/strong\u003e Route the coaxial cable through dynamic conduit or secure it with clamps to prevent whipping, pinching, or excessive mechanical wear in high-vibration areas.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52668315828587,"sku":"21504-012-028-10-02","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/21504-012-028-10-02-jkihuplkmjt_2f6d211b-e4bc-44bb-a386-fd8047a66258.jpg?v=1765521016","url":"https:\/\/www.plcprotech.com\/id\/products\/bently-nevada-21504-012-028-10-02-3300-series-proximity-probe","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}