{"product_id":"21504-000-032-10-02-bently-nevada-8mm-standard-mount-proximity-probe","title":"21504-000-032-10-02 Bently Nevada 8mm Standard Mount Proximity Probe","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e21504-000-032-10-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a cornerstone of the Bently Nevada legacy 7200 series transducer line, specifically configured as an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e8mm Standard Mount Proximity Probe\u003c\/strong\u003e. This sensor serves as a high-precision, non-contact displacement transducer designed to measure radial vibration and axial position on critical rotating machinery. Whether monitoring a high-speed centrifugal compressor or a large-scale steam turbine, this probe provides the essential raw data required for the 7200 series monitoring system to detect early signs of mechanical distress.\u003c\/p\u003e\n\u003cp\u003eUtilizing eddy current technology, the 21504-000-032-10-02 converts the physical gap between the probe tip and the shaft into a proportional voltage signal. Its 3\/8-24 threaded body allows for direct installation into bearing housings, while the robust 8mm tip diameter ensures excellent linearity and resistance to environmental interference. Engineered for the \"set-and-forget\" reliability demanded by the power generation and oil and gas industries, this probe remains a trusted solution for asset protection.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Configuration\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e21504-000-032-10-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emodel code defines the precise mechanical dimensions required for specialized industrial mounting.\u003c\/p\u003e\n\u003ch3\u003eUnthreaded Length (000)\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e000\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eoption indicates\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e0.0 inches\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eof unthreaded length. The 3\/8-24 threads run the entire length of the probe case to the tip, providing maximum flexibility for adjustment within mounting brackets or deep threaded holes.\u003c\/p\u003e\n\u003ch3\u003eOverall Case Length (032)\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e032\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edesignation specifies a total case length of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e32 mm\u003c\/strong\u003e. This compact footprint is ideal for standard bearing housings where internal clearance is sufficient, but a shorter body is preferred to minimize the cantilever effect during high-vibration events.\u003c\/p\u003e\n\u003ch3\u003eTotal Length (10)\u003c\/h3\u003e\n\u003cp\u003eThis probe features a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1.0-meter (39.4 inches)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003etotal length. This is the standard \"pigtail\" configuration, designed to connect to an extension cable. The factory tolerance allows for\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e+0.25 meters \/ -0.10 meters\u003c\/strong\u003e, ensuring adequate reach to the junction box.\u003c\/p\u003e\n\u003ch3\u003eConnector Option (02)\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econfiguration includes the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMiniature male coaxial connector\u003c\/strong\u003e. This specialized interface is designed for low-loss signal transmission and serves as the bridge to the 7200 series extension cable and Proximitor®.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification Value\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProbe Tip Diameter\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eThread Size\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3\/8-24 UNF-2A (Standard Mount)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eLinear Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2.0 mm (80 mils)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eScale Factor\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e7.87 V\/mm (200 mV\/mil)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-34°C to +177°C (-30°F to +350°F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProbe Tip Material\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePolyphenylene sulfide (PPS)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eProbe Case Material\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e300 Series Stainless Steel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3.0 Kg (Securely packed for global transit)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e21504 series\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis built for extreme industrial longevity:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh-Temperature Resilience:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe PPS tip and stainless steel case handle the intense thermal cycling found near turbine bearings without signal drift or material degradation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHermetic Integrity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe probe is sealed to prevent oil or moisture from wicking through the cable, ensuring the coaxial dielectric remains dry and the calibration stays within factory specs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLegacy Reliability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAs part of the 7200 series family, this probe offers a proven track record of decades-long service life in mission-critical applications where failure is not an option.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eInstallation \u0026amp; Maintenance Guide\u003c\/h2\u003e\n\u003cp\u003eSuccess with the 7200 series begins with precise gapping and secure cabling.\u003c\/p\u003e\n\u003ch3\u003eSetting the Gap\u003c\/h3\u003e\n\u003cp\u003eConnect the probe to its designated Proximitor®. Use a voltmeter to monitor the DC output. For a standard 7200 system, adjust the probe until you reach approximately\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e-10.0 VDC\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(the center of the linear range). Ensure the shaft is in its normal resting position before tightening the jam nuts.\u003c\/p\u003e\n\u003ch3\u003eCable Protection\u003c\/h3\u003e\n\u003cp\u003eNever leave the miniature coaxial connector exposed to the elements. Always use a connector protector or weather-proof junction box. If the cable must pass through oily areas, ensure the conduit is sealed to prevent \"oil-soaking\" the cable jacket, which can change the system capacitance over time.\u003c\/p\u003e\n\u003ch3\u003eTorque and Tightening\u003c\/h3\u003e\n\u003cp\u003eTighten the jam nuts to a maximum of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e13.6 N·m (120 in·lb)\u003c\/strong\u003e. Do not over-torque, as the 3\/8-24 threads on the stainless steel case can strip if handled with excessive force, potentially damaging the machine's mounting hole.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical FAQs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: Is the 21504 probe compatible with the newer 3300 XL Proximitor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA1: While the 21504 is part of the 7200 series, it can often be used with 3300 XL systems if the total system length and calibration match. However, for maximum accuracy and compliance, it is best paired with 7200 series components.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: What is the \"CN\" equivalent for this model?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA2: If your site requires Chinese hazardous area approvals (NEPSI), you would typically look for a model suffix that includes \"CN\". The standard 21504-000-032-10-02 is the baseline North American\/Global version.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Can I cut the 1.0m pigtail to a shorter length?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA3:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNever cut the cable.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1.0m length is a critical part of the tuned electrical circuit. Shortening the cable will change the system impedance, leading to massive errors in your vibration and thrust readings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Why is the shipping weight 3 kg?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA4: To protect the precision-ground threads and the sensitive tip, Bently Nevada utilizes heavy-duty, anti-static protective packaging. The 3 kg weight ensures that the probe arrives at your facility in factory-calibrated condition.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52668325658987,"sku":"21504-000-032-10-02","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/21504-000-032-10-02-ni2akfujydw_e69320a8-7b03-408f-ad72-532a8d1fed6c.jpg?v=1765521303","url":"https:\/\/www.plcprotech.com\/products\/21504-000-032-10-02-bently-nevada-8mm-standard-mount-proximity-probe","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}