{"product_id":"bently-nevada-21000-28-05-00-070-01-02-proximity-probe-housing-assembly","title":"Bently Nevada 21000-28-05-00-070-01-02 Proximity Probe Housing Assembly","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDesigned to provide robust mechanical and environmental protection for industrial vibration sensors, the \u003cstrong\u003eBently Nevada 21000-28-05-00-070-01-02\u003c\/strong\u003e is a rugged field-mountable proximity probe housing assembly engineered for critical machinery monitoring. This professional-grade enclosure shields sensitive proximity probes from physical impacts, process fluids, and harsh ambient atmospheres, ensuring high-fidelity signal transmission to your TSI or DCS systems. The housing simplifies the sensor adjustment process, allowing maintenance engineers to calibrate or replace internal probes externally without dismantling machine casings or shutting down processes.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003eExplosion-proof and weatherproof rating designed for hazardous zone protection.\u003c\/li\u003e\n  \u003cli\u003eHeavy-duty physical dome shield to prevent mechanical damage to fragile sensor connectors.\u003c\/li\u003e\n  \u003cli\u003eFacilitates safe, external probe gap adjustment while machinery is running.\u003c\/li\u003e\n  \u003cli\u003eExcellent resistance to grease, oil, steam, and corrosive airborne particulates.\u003c\/li\u003e\n  \u003cli\u003eIntegrated sealing rings to maintain housing pressure boundaries and ingress integrity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003eTurbine supervisory instrumentation (TSI) for steam and gas turbines.\u003c\/li\u003e\n  \u003cli\u003eRadial shaft vibration and axial thrust position measurements in centrifugal compressors.\u003c\/li\u003e\n  \u003cli\u003eIndustrial gearbox, pump, and electric motor casing installations.\u003c\/li\u003e\n  \u003cli\u003ePetrochemical, oil and gas, and power generation heavy rotating machinery monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; font-size: 14px;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; width: 35%;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eBently Nevada\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e21000-28-05-00-070-01-02\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eHousing Family\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e21000 Series Proximity Probe Housing\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eHousing Material\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eAnodized Aluminum\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eMounting Thread (Option -02)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e3\/4-14 NPT\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eProbe Cable Length (Option -05)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.5 meters (20 inches)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eProbe Penetration (Option -070)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e7.0 inches\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eFitting Option (Option -01)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eOne 1\/2-14 NPT plug\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eOperating Temperature\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-51 degC to 177 degC (-60 degF to 350 degF)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eUnited States\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e2.1 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e31.0 cm x 15.0 cm x 15.0 cm\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe 21000 series housing is fully compatible with standard 3300 and 3300 XL 8mm proximity sensors. When replacing legacy 21000 housings, cross-reference the probe penetration length (Option -070, corresponding to 7.0 inches) and the mounting thread profile (Option -02, corresponding to 3\/4-14 NPT) to prevent mechanical interferences or fluid leaks at the machine interface wall.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eUnder high-temperature operation on steam turbine cases, thermal growth must be calculated. Ensure that the probe penetration depth accounts for thermal expansion of the machine rotor and stator to avoid physical contact between the probe tip and the target shaft. Lock the main thread assembly firmly with the locking ring to stop vibration-induced drift during operation.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #2b6cb0; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen installing or adjusting the internal sensor, always disconnect the proximity coaxial connector before rotating the housing. If the housing is threaded into the machine casing with the cable connected, the internal coaxial lead will twist and experience mechanical failure or shield degradation. Ensure a minimum thread engagement of 5 full turns on the NPT fitting to guarantee environmental sealing.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; margin-top: 1.5rem; margin-bottom: 0.5rem;\"\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 15px; margin-bottom: 1.5rem; border-radius: 4px;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 5px;\"\u003eCRITICAL WARNING:\u003c\/strong\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0; font-weight: 500;\"\u003eEnsure the monitored machinery is completely de-energized, depressurized, and allowed to cool to ambient temperature before attempting to remove or install any probe housing assembly. Residual casing pressure or hot fluid blowback can result in severe physical injury.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; color: #2d3748; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 10px;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: bold; font-size: 12px;\"\u003e1\u003c\/span\u003e\n    \u003cp style=\"margin: 0; padding-top: 2px;\"\u003eVerify that the mounting port thread on the machine casing matches the 3\/4-14 NPT thread profile of the housing.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 10px;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: bold; font-size: 12px;\"\u003e2\u003c\/span\u003e\n    \u003cp style=\"margin: 0; padding-top: 2px;\"\u003eApply an approved high-temperature industrial thread sealant (such as PTFE or nickel anti-seize) to the male NPT threads.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 10px;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: bold; font-size: 12px;\"\u003e3\u003c\/span\u003e\n    \u003cp style=\"margin: 0; padding-top: 2px;\"\u003eThread the housing into the machine wall, maintaining alignment, and tighten to specification. Do not overtighten to prevent thread stripping.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 10px;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-weight: bold; font-size: 12px;\"\u003e4\u003c\/span\u003e\n    \u003cp style=\"margin: 0; padding-top: 2px;\"\u003eRoute the internal probe cable through the conduit outlet, calibrate the sensor gap using an external volt\/ohmmeter, and secure the locknuts.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52666743718251,"sku":"21000-28-05-00-070-01-02","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bently-nevada-21000-28-05-00-070-01-02-proximity-probe-housingassemblies-rvz3ub5qy12_05c760c6-f01b-4ab9-8ee9-015af2a5f373.jpg?v=1765446931","url":"https:\/\/www.plcprotech.com\/ms\/products\/bently-nevada-21000-28-05-00-070-01-02-proximity-probe-housing-assembly","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}