{"product_id":"bently-nevada-21000-27-05-40-026-03-02-21000-series-proximity-probe-housing-assembly","title":"Bently Nevada 21000-27-05-40-026-03-02 21000 Series Proximity Probe Housing Assembly","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eEngineered to safeguard critical machinery monitoring sensors in harsh industrial environments, the Bently Nevada 21000-27-05-40-026-03-02 provides robust physical and environmental protection for proximity probes. This explosion-proof assembly allows plant operators to adjust sensor insertion depth externally, eliminating the need to shut down rotating machinery for routine probe gapping. Constructed from durable, copper-free aluminum, the housing serves as a reliable shield against mechanical impact, moisture ingress, and hazardous atmospheres in industrial environments.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #2b6cb0; padding-bottom: 0.5rem; margin-top: 1.5rem;\"\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal Adjustability:\u003c\/strong\u003e Facilitates safe, external gapping and mechanical adjustment of proximity probes without opening or stopping the machine casing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHazardous Area Certified:\u003c\/strong\u003e Designed and approved for explosion-proof and flameproof installations in classified environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRugged Aluminum Construction:\u003c\/strong\u003e Fabricated from copper-free aluminum to withstand corrosive elements and physical impacts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCable Protection:\u003c\/strong\u003e Integrates robust conduit entries to prevent moisture, dust, and chemicals from degrading critical signal wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #2b6cb0; padding-bottom: 0.5rem; margin-top: 1.5rem;\"\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; padding-left: 1.5rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cli\u003eSteam and gas turbine vibration and axial displacement monitoring.\u003c\/li\u003e\n  \u003cli\u003eCentrifugal compressor shaft vibration diagnostic installations.\u003c\/li\u003e\n  \u003cli\u003eHeavy industrial gearboxes, pumps, and cooling tower fans.\u003c\/li\u003e\n  \u003cli\u003ePetrochemical, refinery, and power generation facilities requiring explosion-proof protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #2b6cb0; padding-bottom: 0.5rem; margin-top: 1.5rem;\"\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;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d;\"\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"text-align: left; padding: 8px; font-weight: bold;\"\u003eSpecification\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eBently Nevada\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e21000-27-05-40-026-03-02\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eProduct Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eProximity Probe Housing Assembly\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eHousing Material\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eCopper-free Aluminum\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eExplosion Protection\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eExplosion-proof \/ Flameproof (Ex d)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eEnvironmental Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eIP66 \/ NEMA 4X equivalent\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003eUnited States\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e2.1 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 8px; font-weight: bold;\"\u003ePackage Dimensions (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 8px;\"\u003e280 x 180 x 150 mm\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; border-bottom: 2px solid #2b6cb0; padding-bottom: 0.5rem; margin-top: 1.5rem;\"\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4 style=\"color: #2d3748; 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 features an aluminum body standard for general industrial settings. For highly corrosive marine or chemical-washdown environments, the stainless steel 21005 series housing is the recommended physical drop-in upgrade. Always verify that the probe thread and sleeve length match your existing 3300 or 3300 XL transducer configuration.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #2d3748; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen sizing sleeve lengths, avoid choosing a sleeve that is too long for the available clearance. If the sleeve is driven directly into the shaft during machinery start-up, it will destroy the proximity probe tip and potentially score the target shaft. Keep the internal O-ring seal lubricated to prevent moisture intrusion, which can lead to rapid signal drift or ground faults in the driver loop.\u003c\/p\u003e\n\n\u003ch4 style=\"color: #2d3748; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eAlways apply a non-setting, high-temperature thread lubricant to the dome cover threads during commissioning. Aluminum-to-aluminum threads are prone to galling, which can make future probe calibrations or replacements extremely difficult without damaging the housing body.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1a365d; border-bottom: 2px solid #2b6cb0; padding-bottom: 0.5rem; margin-top: 1.5rem;\"\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 0.5rem;\"\u003eCRITICAL WARNING\u003c\/strong\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003eDe-energize all associated sensor drivers and confirm that the local atmosphere is free of combustible gases before opening the housing cover or adjusting the probe in classified hazardous zones.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 2rem; height: 2rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e1\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eCalculate total target insertion depth and verify clearance inside the machinery casing.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 2rem; height: 2rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e2\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eThread the main housing body securely into the machine casing port using appropriate sealant threads.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 2rem; height: 2rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e3\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eInsert the proximity probe and adjust the sleeve to establish the correct target voltage gap.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 2rem; height: 2rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e4\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eTighten the sleeve locknut to lock the sensor position and prevent drift under running vibration.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; min-width: 2rem; height: 2rem; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e5\u003c\/div\u003e\n    \u003cdiv style=\"color: #2d3748;\"\u003eRoute the probe extension cable through the conduit entry, apply a robust seal gland, and hand-tighten the protective dome cover.\u003c\/div\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52666628637035,"sku":"21000-27-05-40-026-03-02","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bently-nevada-21000-27-05-40-026-03-02-proximity-probehousing-assemblies-fl5fejukjq1_4905e2cd-1798-4e29-b6a7-8823b0c9a795.jpg?v=1765444365","url":"https:\/\/www.plcprotech.com\/products\/bently-nevada-21000-27-05-40-026-03-02-21000-series-proximity-probe-housing-assembly","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}