{"product_id":"21000-28-05-20-030-04-02-bently-nevada-proximity-probe-housing-assembly","title":"21000-28-05-20-030-04-02 Bently Nevada Proximity Probe Housing Assembly","description":"\u003ch3\u003eEngineering Blueprint \u0026amp; Architecture\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e21000-28-05-20-030-04-02\u003c\/strong\u003e engineered by \u003cstrong\u003eBently Nevada\u003c\/strong\u003e represents a heavy-duty proximity probe housing assembly purpose-built for the \u003cstrong\u003e3300 XL Series\u003c\/strong\u003e monitoring ecosystem. Designed to protect reverse-mount eddy-current transducers in hazardous industrial environments, this assembly features a durable aluminum body paired with a 304 stainless steel sleeve. It complies fully with American Petroleum Institute (API) 670 standards for externally mounted probe housings and holds CSA explosion-proof certifications for demanding rotational machinery protection loops.\u003c\/p\u003e\n\u003ch3\u003eSuffix Code \u0026amp; Configuration Breakdown\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Option (28):\u003c\/strong\u003e 3300 XL 8 mm probe with hazardous area approvals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Cable Length (05):\u003c\/strong\u003e 0.5 m (20 in) integral cable length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandoff Adapter (20):\u003c\/strong\u003e 2-inch standoff adapter length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Penetration (030):\u003c\/strong\u003e 3-inch probe penetration depth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Option (04):\u003c\/strong\u003e One 3\/4-14 NPT plug configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Thread (02):\u003c\/strong\u003e 3\/4-14 NPT mounting thread specification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eComprehensive Technical Specifications Matrix\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Parameter Category\u003c\/th\u003e\n\u003cth\u003eEngineering Specification Metrics\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand \u0026amp; Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eBently Nevada\u003c\/strong\u003e \u003cstrong\u003e21000-28-05-20-030-04-02\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003e21000 Series\u003c\/strong\u003e \/ \u003cstrong\u003e3300 XL Series\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eComponent Classification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eProximity Probe Housing Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Materials\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum body with 304 stainless steel sleeve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProbe Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eReverse mount 8 mm proximity probe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.5 m integral probe cable length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePenetration \u0026amp; Standoff\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-inch penetration depth with 2-inch standoff adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThread \u0026amp; Port Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\/4-14 NPT mounting thread and conduit plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhysical Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMaximum visible probe dimension + sleeve: 13.5 in (34.3 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUnit Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 1.1 kg (2.4 lb) excluding conduit fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHazardous Certifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCSA explosion-proof (Class I Div 1\/2, Groups C \u0026amp; D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMechanical Installation \u0026amp; Alignment Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Security:\u003c\/strong\u003e Thread the \u003cstrong\u003e21000-28-05-20-030-04-02\u003c\/strong\u003e securely into machine case tapping using the 3\/4-14 NPT mounting thread, applying rated thread sealant to maintain gas-tight integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePenetration Depth Control:\u003c\/strong\u003e Adjust the 3-inch probe penetration and 2-inch standoff adapter to ensure the 8 mm tip achieves the correct electrical gap relative to the rotating shaft target.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConduit Sealing:\u003c\/strong\u003e Route rigid or flexible conduit through the 3\/4-14 NPT threaded ports, utilizing approved explosion-proof seals to protect internal wiring from oil and moisture ingress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDome Cover Torque:\u003c\/strong\u003e Screw the threaded dome cover firmly into the aluminum housing body, engaging the internal O-ring seal to preserve the CSA Type 4 enclosure rating.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic Capabilities \u0026amp; Maintenance Protocols\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGap Voltage Verification:\u003c\/strong\u003e Monitor initial DC gap voltages via the connected monitor rack to confirm that probe positioning remains stable within linear operating ranges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eO-Ring Integrity Checks:\u003c\/strong\u003e Periodically inspect sealing O-rings during scheduled outage windows to prevent environmental degradation from compromising hazardous area safety ratings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Runout Inspection:\u003c\/strong\u003e Verify that shaft surface condition near the probe tip remains free of deep scratches or burrs that could distort vibration readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConduit Drain Inspection:\u003c\/strong\u003e Ensure conduit low points incorporate proper drainage to prevent condensed moisture from pooling around terminal blocks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSystem Compatibility \u0026amp; Quality Frameworks\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransducer Integration:\u003c\/strong\u003e Fully compatible with \u003cstrong\u003eBently Nevada\u003c\/strong\u003e \u003cstrong\u003e3300 XL Series\u003c\/strong\u003e 8 mm proximity probes and extension cables.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAPI 670 Compliance:\u003c\/strong\u003e Engineered to meet strict mechanical and thermal requirements outlined in American Petroleum Institute 670 standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Classifications:\u003c\/strong\u003e Certified for hazardous locations requiring CSA explosion-proof enclosures in North American industrial plants.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLogistics, Secure Packaging \u0026amp; 12-Month Warranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Courier Network:\u003c\/strong\u003e Expedited worldwide shipping via trusted express carriers including FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFulfillment Window:\u003c\/strong\u003e Orders are processed and dispatched within 24 to 48 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective Packaging:\u003c\/strong\u003e Enclosed in custom industrial packaging designed to safeguard precision stainless steel sleeves and threads during transit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty Coverage:\u003c\/strong\u003e Backed by a comprehensive 12-month factory defect warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTarget Industrial Equipment \u0026amp; Application Scenarios\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge Steam \u0026amp; Gas Turbines:\u003c\/strong\u003e Monitoring radial vibration and shaft axial position on high-speed utility generation assets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentrifugal Compressors:\u003c\/strong\u003e Protecting multi-stage compressor trains against excessive rotor displacement and bearing wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCritical Boiler Feed Pumps:\u003c\/strong\u003e House vibration probes in high-temperature, pressurized industrial pump environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSelection Guidelines \u0026amp; Engineering Best Practices\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVerify Penetration Requirements:\u003c\/strong\u003e Ensure the 3-inch probe penetration and 2-inch standoff configuration match your machinery casing clearance drawings before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirm Regional Approvals:\u003c\/strong\u003e Note that CSA-approved housings are specifically intended for North American end users; verify site compliance requirements prior to procurement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Material Compatibility:\u003c\/strong\u003e Select the aluminum body with 304 stainless steel sleeve combination when standard industrial chemical exposure limits apply.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eModel Comparison \u0026amp; Technical Advisory\u003c\/h3\u003e\n\u003cp\u003eWhen evaluating alternative configurations for your monitoring architecture, consider the following model variant:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.plcsparehub.com\/products\/21000-28-00-00-039-03-02-bently-nevada-proximity-probe-housing-assembly\"\u003e21000-28-00-00-039-03-02\u003c\/a\u003e: Features a zero-length standoff adapter and a longer 3.9-inch probe penetration, making it ideal for machinery cases requiring direct mounting without extended thermal standoffs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003eField Engineering Perspective:\u003c\/strong\u003e During turnaround maintenance on high-speed turbine compressors, technicians frequently encounter seized housing threads or damaged probe tips due to improper torque application. Automation engineers at \u003cstrong\u003eGlobal PLC Spare HUB\u003c\/strong\u003e recommend applying high-temperature anti-seize compound specifically rated for stainless steel threads when installing the \u003cstrong\u003e21000-28-05-20-030-04-02\u003c\/strong\u003e. Ensuring the 0.5 m probe cable is coiled neatly inside the housing dome without sharp bends prevents signal attenuation and preserves raw vibration waveform fidelity across the \u003cstrong\u003e3300 XL Series\u003c\/strong\u003e monitoring chain.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e\u003cbr\u003eWhy does the \u003cstrong\u003e21000-28-05-20-030-04-02\u003c\/strong\u003e incorporate both an aluminum housing body and a 304 stainless steel sleeve?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e\u003cbr\u003eThe aluminum body provides lightweight structural strength and explosion-proof containment, while the 304 stainless steel sleeve offers superior corrosion resistance and mechanical protection where the assembly penetrates the machine case.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e\u003cbr\u003eWhat precautions are necessary when routing probe cables through the 3\/4-14 NPT conduit ports?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e\u003cbr\u003eTechnicians must avoid pulling the cable too tightly against sharp fitting edges and should always install approved explosion-proof sealing fittings to maintain hazardous area protection standards.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e\u003cbr\u003eCan this housing assembly be used with non-Bently Nevada proximity probes?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e\u003cbr\u003eNo, the internal mounting geometry and reverse-mount probe mechanics are specifically calibrated to house \u003cstrong\u003eBently Nevada\u003c\/strong\u003e \u003cstrong\u003e3300 XL Series\u003c\/strong\u003e 8 mm transducers accurately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e\u003cbr\u003eWhat shipping carriers and delivery timelines are available for urgent plant outage replacements?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e\u003cbr\u003eWe dispatch all orders within 24 to 48 hours utilizing premier global express carriers including FedEx, UPS, and DHL to minimize costly industrial downtime.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuestion:\u003c\/strong\u003e\u003cbr\u003eHow does the 2-inch standoff adapter affect thermal isolation on hot machinery casings?\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAnswer:\u003c\/strong\u003e\u003cbr\u003eThe 2-inch standoff adapter physically elevates the housing dome away from the hot machine wall, reducing internal housing temperatures and protecting the embedded probe connector from extreme thermal transfer.\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":45013977170102,"sku":"21000-28-05-20-030-04-02","price":209.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/21000-28-05-15-050-03-02_eb2b9729-4505-46ec-b984-a675dc9471f5.jpg?v=1789982731","url":"https:\/\/www.plcsparehub.com\/products\/21000-28-05-20-030-04-02-bently-nevada-proximity-probe-housing-assembly","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}