{"product_id":"bently-nevada-21000-28-05-20-051-04-02-proximity-probe-housing-assembly","title":"Bently Nevada 21000-28-05-20-051-04-02 Proximity Probe Housing Assembly","description":"\u003ch3\u003eProduct Introduction\u003c\/h3\u003e\n\u003cp\u003eWelcome to the Global PLC Spare HUB Review and Engineering Insight. This technical evaluation covers the \u003cstrong\u003eBently Nevada\u003c\/strong\u003e \u003cstrong\u003e21000-28-05-20-051-04-02\u003c\/strong\u003e Proximity Probe Housing Assembly from the \u003cstrong\u003e21000\u003c\/strong\u003e Series. Designed for rigorous industrial environments, this assembly houses reverse mount proximity probes safely while maintaining full compliance with API 670 standards for externally mounted vibration sensors. Field experience shows that utilizing robust aluminum bodies with stainless steel sleeves prevents housing degradation during high-vibration turbine monitoring operations.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eTechnical Parameter\u003c\/th\u003e\n\u003cth\u003eSpecification Detail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eBently Nevada\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel \/ Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e21000-28-05-20-051-04-02\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e21000\u003c\/strong\u003e Proximity Probe Housing Assemblies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProbe Option\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e3300 XL\u003c\/strong\u003e 8 mm probe with selectable hazardous area approvals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProbe Cable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e0.5 m\u003c\/strong\u003e (20 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandoff Adapter Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e2 in\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProbe Penetration Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e5.1 in\u003c\/strong\u003e (051)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFitting Option\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOne \u003cstrong\u003e3\/4-14 NPT\u003c\/strong\u003e plug only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Thread Option\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e3\/4-14 NPT\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum body with \u003cstrong\u003e304 stainless steel sleeve\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAssembly Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e1.1 kg\u003c\/strong\u003e (2.4 lb) typical without fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Dimension\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e13.5 in\u003c\/strong\u003e (34.3 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e-50°C to +80°C\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount the assembly directly to machinery casing using the \u003cstrong\u003e3\/4-14 NPT\u003c\/strong\u003e mounting thread option.\u003c\/li\u003e\n\u003cli\u003eEnsure the standoff adapter is firmly secured to maintain the exact \u003cstrong\u003e5.1 in\u003c\/strong\u003e probe penetration depth.\u003c\/li\u003e\n\u003cli\u003eRoute the \u003cstrong\u003e0.5 m\u003c\/strong\u003e probe cable carefully through the internal threaded ports to prevent pinching.\u003c\/li\u003e\n\u003cli\u003eConnect external conduit lines securely into the provided \u003cstrong\u003e3\/4-14 NPT\u003c\/strong\u003e threaded ports for complete environmental sealing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommissioning \u0026amp; Maintenance Convenience\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe removable dome cover screws directly into the housing body for rapid internal component inspection.\u003c\/li\u003e\n\u003cli\u003eIntegrated O-rings and thread seals minimize fluid ingress risks during routine washdowns.\u003c\/li\u003e\n\u003cli\u003eTechnicians can replace internal reverse mount proximity probes without uninstalling the primary housing unit from the machine frame.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatibility \u0026amp; Compliance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFully compliant with the American Petroleum Institute API 670 Standard for externally mounted proximity probe housings.\u003c\/li\u003e\n\u003cli\u003eCertified by the Canadian Standards Association CSA for hazardous locations.\u003c\/li\u003e\n\u003cli\u003eCompliant with European Community Directive RoHS \u003cstrong\u003e2011\/65\/EU\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eApproved for North American hazardous areas: Class I Divisions 1 and 2 Groups C and D; Class II Divisions 1 and 2 Groups E, F, and G; Class III; Enclosure Type 4.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePackaging \u0026amp; Logistics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSupplied strictly as \u003cstrong\u003eNew \u0026amp; Original in Factory Packing\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eBacked by a comprehensive \u003cstrong\u003e12-month factory warranty\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eDispatched via reliable courier services including \u003cstrong\u003eFedEx\u003c\/strong\u003e, \u003cstrong\u003eUPS\u003c\/strong\u003e, and \u003cstrong\u003eDHL\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eProcessed and shipped within \u003cstrong\u003e24-48 hours\u003c\/strong\u003e globally.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications \u0026amp; Diagnostic Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDeployed extensively on critical turbomachinery including steam turbines, gas turbines, compressors, and large pumps.\u003c\/li\u003e\n\u003cli\u003eProvides stable mechanical housing support for displacement sensors measuring radial vibration, axial position, and shaft speed.\u003c\/li\u003e\n\u003cli\u003eGlobal PLC Spare HUB's Insight highlights that secure housing installation prevents spurious high-frequency noise spikes, ensuring accurate gap voltage transmission to monitoring monitors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the \u003cstrong\u003e21000-28-05-20-051-04-02\u003c\/strong\u003e housing be installed in explosive atmospheres?\u003c\/strong\u003e\u003cbr\u003eA: Yes, it holds CSA explosion-proof certifications for Class I, II, and III hazardous locations when ordered for North American end users.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance steps reduce O-ring degradation in high-vibration setups?\u003c\/strong\u003e\u003cbr\u003eA: Field engineers recommend inspecting the dome cover O-rings during every scheduled outage and applying approved thread lubricant to maintain environmental seals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the standoff adapter affect probe penetration?\u003c\/strong\u003e\u003cbr\u003eA: The \u003cstrong\u003e2 in\u003c\/strong\u003e standoff adapter establishes the precise mechanical offset required to achieve the total \u003cstrong\u003e5.1 in\u003c\/strong\u003e probe penetration depth inside the machine casing.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/21000_CA21000_Proximity_Probe_Housing_Assembly_007eb544-fd00-4b41-a22e-c953629fa721.png?v=1784785784\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45014024847542,"sku":"21000-28-05-20-051-04-02","price":219.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/21000-28-05-00-030-04-02_2272c7c3-387b-46eb-9994-69e1c8e4cb1b.jpg?v=1785835351","url":"https:\/\/www.plcsparehub.com\/products\/bently-nevada-21000-28-05-20-051-04-02-proximity-probe-housing-assembly","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}