{"product_id":"bently-nevada-21000-26-05-15-035-04-02-proximity-probe-housing-assembly","title":"Bently Nevada 21000-26-05-15-035-04-02 Proximity Probe Housing Assembly","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eDesigned to facilitate the safe external installation and precise micro-adjustment of proximity transducers, the \u003cstrong\u003eBently Nevada 21000-26-05-15-035-04-02\u003c\/strong\u003e Proximity Probe Housing Assembly offers robust, explosion-proof protection for critical vibration-monitoring sensors. This mechanical housing allows instrument engineers to adjust the sensor gap externally without removing the protective dome, preserving the environmental seal during machine operation. Fabricated from high-grade anodized aluminum, the housing provides exceptional durability against corrosive environments, high humidity, and industrial chemical exposure typical of petrochemical and power generation facilities.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExternal Gap Adjustment:\u003c\/strong\u003e Eliminates the need to shut down rotating machinery to re-gap proximity probes, maximizing process uptime.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExplosion-Proof Rating:\u003c\/strong\u003e Designed to meet stringent hazardous area requirements for safe installation in volatile industrial environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnvironmental Protection:\u003c\/strong\u003e IP66-rated housing seals internal connections against ingress from moisture, dust, and corrosive vapors.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRobust Aluminum Construction:\u003c\/strong\u003e Light-weight, high-strength anodized aluminum casing minimizes structural load while protecting sensitive probe internals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003eSteam turbine bearing housings and axial thrust measurement.\u003c\/li\u003e\n  \u003cli\u003eCentrifugal gas compressor shaft vibration and radial position monitoring.\u003c\/li\u003e\n  \u003cli\u003eIndustrial gearboxes, cooling tower fans, and high-speed turbomachinery.\u003c\/li\u003e\n  \u003cli\u003eHeavy process pumps in chemical refineries and power generation plants.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOrdering Information Breakdown\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; text-align: left; font-size: 14px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2d3748;\"\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eSuffix Code\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eParameter Description\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eSelected Configuration\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: 10px; font-weight: bold;\"\u003e-26\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eProbe Thread Option\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eM10 x 1 Thread (Compatible with standard 8mm probe systems)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e-05\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eConduit Fitting Option\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e3\/4-14 NPT Entry\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e-15\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eAgency Approvals\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eMultiple Approvals (CSA, FM, ATEX, IECEx Class I Div 1 \/ Zone 1)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e-035\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eSleeve Length Option\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e3.5 Inches (88.9 mm)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e-04\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eStilling Well \/ Probe Protection Option\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eStandard Protection Sleeve\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003e-02\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eMounting Adaptor \/ Thread Option\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eStandard NPT Mounting Configuration\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\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; text-align: left; 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: 30%;\"\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 Family\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e21000 Series Proximity Probe Housing Assemblies\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;\"\u003eProbe Thread Size\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eM10 x 1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eConduit Entry Size\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;\"\u003eSleeve Length\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e3.5 Inches (88.9 mm)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eIngress Protection Rating\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eIP66 \/ NEMA 4X\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eHazardous Area Classification\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eClass I, Division 1, Groups B, C, and D; Zone 1, Ex d IIC\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 Limits\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e-40 to +100 degC (Housing limit, check specific O-ring ratings)\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;\"\u003e1.65 kg (3.64 lbs)\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;\"\u003e250 x 150 x 150 mm (9.8 x 5.9 x 5.9 inches)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eConnections and Interfaces\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; text-align: left; font-size: 14px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #2d3748;\"\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eInterface Type\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; font-weight: bold;\"\u003eFunction \/ Connection Assignment\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: 10px; font-weight: bold;\"\u003eInternal Probe Mount\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eM10 x 1 internal thread for direct mounting of the 8mm proximity probe body.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eCable Conduit Ports\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eDual or single 3\/4-14 NPT threaded ports for routed field conduit and cable protection.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold;\"\u003eProcess Mount\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eMachine-side mounting thread designed to seal against the bearing housing or casing wall.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe 21000 Series features an anodized aluminum body, which makes it considerably lighter and more cost-effective than its 21001 stainless steel counterpart. However, engineers must verify that the environmental exposure allows aluminum; in high-salinity marine applications or extreme chemical washdown environments, the stainless steel 21001 series is preferred. Note that the M10 x 1 thread option (-26) is strictly configured for metric 8mm probes and is not compatible with standard English 3\/8-24 UNF threaded probes.\u003c\/p\u003e\n\n\u003ch4\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eA common point of commissioning failure relates to mechanical thermal growth. When machines warm up, thermal expansion of both the turbine housing and the probe sleeve can shift the physical probe gap relative to the shaft. For machines running above 80 degC, recalculate the thermal growth parameters to prevent physical contact between the probe tip and the shaft target during steady-state operations.\u003c\/p\u003e\n\n\u003ch4\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eWhen routing the extension cable through the 3\/4-14 NPT conduit entry, always construct a drip loop to ensure moisture does not pool on the internal probe-to-extension connector. The use of a non-hardening thread sealant is critical for the conduit NPT threads to maintain the system's IP66 rating and prevent long-term environmental degradation.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 15px; margin-bottom: 1.5rem; color: #9b2c2c;\"\u003e\n  \u003cstrong\u003eCRITICAL WARNING:\u003c\/strong\u003e De-energize and lock out all machinery before beginning the installation process. Ensure the surrounding atmosphere is completely free of combustible or explosive gases before exposing internal electrical connections. Vent all residual pressure from inside the machine casing prior to mounting or adjusting the probe sleeve assembly.\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem; color: #2d3748;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 10px;\"\u003e\n    \u003cspan style=\"display: flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; min-width: 24px; font-size: 14px; font-weight: bold;\"\u003e1\u003c\/span\u003e\n    \u003cp style=\"margin: 0;\"\u003eUnthread and remove the protective outer aluminum dome of the housing to access the internal sleeve locking components.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 10px;\"\u003e\n    \u003cspan style=\"display: flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; min-width: 24px; font-size: 14px; font-weight: bold;\"\u003e2\u003c\/span\u003e\n    \u003cp style=\"margin: 0;\"\u003eCarefully route the proximity probe cable through the internal sleeve and screw the M10 x 1 probe into the threaded end of the sleeve until fully seated.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 10px;\"\u003e\n    \u003cspan style=\"display: flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; min-width: 24px; font-size: 14px; font-weight: bold;\"\u003e3\u003c\/span\u003e\n    \u003cp style=\"margin: 0;\"\u003eInsert the sleeve into the housing, mount the housing assembly onto the machine casing using the standard mounting adapter, and verify seal integrity.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 10px;\"\u003e\n    \u003cspan style=\"display: flex; align-items: center; justify-content: center; background-color: #2b6cb0; color: #ffffff; border-radius: 50%; width: 24px; height: 24px; min-width: 24px; font-size: 14px; font-weight: bold;\"\u003e4\u003c\/span\u003e\n    \u003cp style=\"margin: 0;\"\u003eUsing a calibrated voltmeter connected to the proximitor sensor, adjust the sleeve depth until the target gap voltage is set. Lock down the sleeve collar, reconnect the outer dome, and torque to OEM specifications.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52666764984683,"sku":"21000-26-05-15-035-04-02","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bently-nevada-21000-26-05-15-035-04-02-proximity-probe-housingassemblies-jcxcnib2vkr_593eca0f-85f4-4571-90d5-9af2a00a6eea.jpg?v=1765447207","url":"https:\/\/www.plcprotech.com\/vi\/products\/bently-nevada-21000-26-05-15-035-04-02-proximity-probe-housing-assembly","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}