{"product_id":"bently-nevada-21000-28-05-00-057-04-02-proximity-probe-housing-assembly","title":"Bently Nevada 21000-28-05-00-057-04-02 Proximity Probe Housing Assembly","description":"\u003ch3\u003eSystem Description\u003c\/h3\u003e\n\u003cp\u003e\nThe \u003cstrong\u003e21000-28-05-00-057-04-02\u003c\/strong\u003e is a specialized industrial enclosure system designed to facilitate the external mounting and adjustment of proximity sensors. \nThis housing assembly is a critical component for Turbine Supervisory Instrumentation (TSI) in sectors such as power generation, oil and gas, and wastewater treatment. \nBy utilizing this assembly, engineers can install or replace proximity probes without the need to disassemble machine casings or halt production. \nThis hot-swappable capability is essential for high-availability assets such as centrifugal compressors and large motors, where minimizing downtime remains a primary operational objective. \nThe rugged construction ensures the internal probe remains protected from environmental contaminants while maintaining precise alignment for accurate vibration and axial position monitoring.\n\u003c\/p\u003e\n\n\u003ch3\u003eConfiguration Details\u003c\/h3\u003e\n\u003cp\u003e\nThe model code \u003cstrong\u003e21000-28-05-00-057-04-02\u003c\/strong\u003e defines a specific mechanical configuration optimized for hazardous area compliance and intermediate penetration:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e28:\u003c\/strong\u003e Probe Option with Connector – Includes a 3300 XL 8 mm probe with multiple international agency approvals (ATEX, IECEx, CSA, etc.).\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003e05:\u003c\/strong\u003e Probe Cable Length Option – 0.5 meter (20 inches) lead length.\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003e00:\u003c\/strong\u003e Standoff Adapter – No standoff adapter included.\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003e057:\u003c\/strong\u003e Probe Penetration – Specifies a total penetration depth of 5.7 inches into the machine casing.\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003e04:\u003c\/strong\u003e Fittings Option – Equipped with one 3\/4-14 NPT plug only.\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003e02:\u003c\/strong\u003e Mounting Thread Option – Standard 3\/4-14 NPT threads for secure attachment to the machine housing.\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerformance Specifications\u003c\/h3\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e21000-28-05-00-057-04-02\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in U.S.A\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProbe Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3300 XL 8 mm (High-Performance)\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePenetration Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e144.8 mm (5.7 inches)\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAnodized Aluminum with Stainless Steel Sleeve\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Thread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\/4-14 NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-51 to +177 °C (Probe Tip)\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHazardous Area Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMultiple Approvals (Option 28)\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.0 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eOperational Questions\u003c\/h3\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eHow do I adjust the probe gap while using the 21000 series housing?\u003c\/strong\u003e\u003cbr\u003e\nAdjustment is performed by loosening the internal probe locking nut within the housing. \nYou can then thread the probe in or out while monitoring the DC Gap Voltage at the Proximitor sensor. \nOnce the target voltage (typically -10 VDC) is reached, the probe is locked in place, and the housing cover is secured.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eWhat is the benefit of the Multiple Approvals (Option 28) probe?\u003c\/strong\u003e\u003cbr\u003e\nThe Option 28 probe is certified for use in various hazardous environments worldwide. \nThis simplifies global inventory management because a single part number complies with North American (CSA), European (ATEX), and international (IECEx) explosion-proof and intrinsic safety standards.\n\u003c\/p\u003e\n\n\u003cp\u003e\n\u003cstrong\u003eCan this housing be used in high-pressure applications?\u003c\/strong\u003e\u003cbr\u003e\nThe 21000 housing is designed to provide an environmental seal. \nHowever, for applications involving high differential pressures such as high-pressure steam turbines, it is recommended to verify the pressure ratings of the probe O-ring and the NPT mounting connection to ensure proper process containment.\n\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Recommendations\u003c\/h3\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eGap Voltage Precision:\u003c\/strong\u003e During installation, always use a digital multimeter to set the gap voltage. \nFor a standard 3300 XL 8 mm system, the linear operating range is between -2 VDC and -18 VDC. \nSetting the gap to approximately -10 VDC ensures the probe remains centered within the measurement range.\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eThread Protection:\u003c\/strong\u003e Apply an anti-seize compound to the 3\/4-14 NPT mounting threads to prevent galling, especially when installing into stainless steel machine casings. \nEnsure the compound is compatible with the process environment such as oil, steam, or chemical exposure.\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eLead Cable Management:\u003c\/strong\u003e The 0.5-meter probe lead must be carefully coiled within the housing to prevent pinching when the cover is installed. \nEnsure the miniature coaxial ClickLoc connector is fully seated and protected from moisture using the provided seals.\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eExplosion-Proof Integrity:\u003c\/strong\u003e To maintain hazardous area certifications, confirm that all NPT fittings are tightened to the specified torque and that the housing cover is fully threaded and locked. \nAny structural modification will invalidate the safety approvals.\n\u003c\/li\u003e\n\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52666746831211,"sku":"21000-28-05-00-057-04-02","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/bently-nevada-21000-28-05-00-057-04-02-proximity-probe-housingassemblies-xvrpgxlvsv2_96bfffa0-3dcb-45f1-8bbd-5129634c1a1a.jpg?v=1765446963","url":"https:\/\/www.plcprotech.com\/products\/bently-nevada-21000-28-05-00-057-04-02-proximity-probe-housing-assembly","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}