{"product_id":"21000-28-10-00-217-04-02-proximity-probe-housing-bently-nevada","title":"21000-28-10-00-217-04-02 Proximity Probe Housing Bently Nevada","description":"\u003ch3\u003e\u003cstrong\u003eBently Nevada \u003cspan style=\"color: #0056b3;\"\u003e21000-28-10-00-217-04-02\u003c\/span\u003e Proximity Transducer Housing Architecture\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada \u003cspan style=\"color: #0056b3;\"\u003e21000-28-10-00-217-04-02\u003c\/span\u003e\u003c\/strong\u003e is an industrial-grade external probe housing assembly designed for non-contact eddy current transducer systems. Engineered to protect proximity sensors installed on hazardous or harsh rotating machinery, this rugged enclosure features a durable cast aluminum main body paired with a 304 stainless steel penetration sleeve. Mechanical engineers utilize this explosion-proof assembly to adjust, inspect, or replace proximity probes externally without dismantling machine casings or shutting down plant operations.\u003c\/p\u003e\n\u003cp\u003eThis housing unit isolates the internal eddy current probe from process pressure, harsh atmospheric conditions, and dirty bearing environments. Rated as a Type 4 enclosure with hazardous area approvals, the assembly maintains environmental sealing while permitting precise mechanical positioning of the internal 3300 XL 8 mm proximity probe relative to the target shaft surface.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e21000-28-10-00-217-04-02\u003c\/span\u003e Configuration Breakdown \u0026amp; Ordering Structure\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Model Family: 21000\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction Material:\u003c\/strong\u003e Heavy-Duty Aluminum Body with 304 Stainless Steel Sleeve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Protection:\u003c\/strong\u003e Type 4 Rated, Explosion-Proof with Specific Hazardous Options\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Option [-28]:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelection:\u003c\/strong\u003e 3300 XL 8 mm Probe with Multiple Agency Approvals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Cable Length Option [-10]:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelection:\u003c\/strong\u003e 1.0 Meter (39 Inches) Integrated Probe Cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandoff Adapter Option [-00]:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelection:\u003c\/strong\u003e No Standoff Adapter Included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Penetration Option [-217]:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelection:\u003c\/strong\u003e 21.7 Inches Sleeve Insertion Depth\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitting Option [-04]:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelection:\u003c\/strong\u003e One 3\/4-14 NPT Plug Only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Thread Option [-02]:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelection:\u003c\/strong\u003e 3\/4-14 NPT Threads (Required when no standoff adapter is selected)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e21000-28-10-00-217-04-02\u003c\/span\u003e Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand Manufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBently Nevada (Baker Hughes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Model Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e21000-28-10-00-217-04-02\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAssembly Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e21000 Proximity Probe Housing Assemblies\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Body Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-Strength Cast Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSleeve Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e304 Corrosion-Resistant Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Cable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.0 m (39 inches) Internal Routing Cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEffective Penetration Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e21.7 inches (551.2 mm) Sleeve Length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMain Mounting Thread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\/4-14 NPT Standard Male Thread Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePort \u0026amp; Cable Fittings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\/4-14 NPT Plug Assembly (Option 04)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnvironmental Protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCSA Certified Type 4 Enclosure \/ Explosion-Proof Rated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHazardous Area Approvals\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCanadian Standards Association (CSA) \u0026amp; Multiple Global Certifications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Unit Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.1 kg (2.4 lbs) typical (without external conduit fittings)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eMachinery Monitoring \u0026amp; Diagnostic Utility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada \u003cspan style=\"color: #0056b3;\"\u003e21000-28-10-00-217-04-02\u003c\/span\u003e\u003c\/strong\u003e housing protects critical transducer channels configured for continuous machinery protection. By supporting precise sleeve positioning and probe gap adjustments, the assembly ensures high-fidelity signal output for key vibration diagnostic methods:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Probe Gap Calibration:\u003c\/strong\u003e Allows technicians to verify voltage gap settings (-9.0V to -11.0V DC standard baseline) externally without exposing workers to rotating shafts or hazardous process gases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Radial Dynamic Vibration:\u003c\/strong\u003e Protects dual orthogonal (X-Y) probe pairs measuring dynamic shaft orbit motion in high-speed fluid-film sleeve bearings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxial Thrust Position Tracking:\u003c\/strong\u003e Delivers rigid mechanical alignment for axial displacement probes tracking rotor position relative to thrust collar faces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase Reference Keyphasor Inputs:\u003c\/strong\u003e Provides secure physical positioning for once-per-turn phase timing measurements over keyways or notches.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTarget Equipment \u0026amp; Industrial Application Scenarios\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge Centrifugal Compressors:\u003c\/strong\u003e Heavy-duty refinery wet gas compressors, pipeline boosters, and cracked gas machinery trains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Steam \u0026amp; Gas Turbines:\u003c\/strong\u003e Power generation turbine main bearings requiring hazardous area explosion-proof conduit sealing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Pressure Boiler Feed Pumps:\u003c\/strong\u003e Multi-stage feed pumps subject to high ambient temperatures and steam\/water washdowns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge Electric Motors \u0026amp; Gearboxes:\u003c\/strong\u003e Sleeve-bearing induction motors, planetary gearsets, and heavy industrial blowers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eLogistics, Packaging \u0026amp; Warranty Terms\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging Condition:\u003c\/strong\u003e Brand new and original \u003cstrong\u003eBently Nevada \u003cspan style=\"color: #0056b3;\"\u003e21000-28-10-00-217-04-02\u003c\/span\u003e\u003c\/strong\u003e assembly in factory sealed packaging with complete certification documentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Express Shipping:\u003c\/strong\u003e Orders process and dispatch within 24 to 48 hours via premium express carriers (FedEx, UPS, DHL).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12-Month Factory Warranty:\u003c\/strong\u003e Backed by a full 12-month operational replacement guarantee starting from the dispatch date.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB Field Engineering Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eDuring field installations of the \u003cstrong\u003eBently Nevada \u003cspan style=\"color: #0056b3;\"\u003e21000-28-10-00-217-04-02\u003c\/span\u003e\u003c\/strong\u003e, mechanical sleeve measurement and thread sealing require strict execution. On a recent overhaul project at a fertilizer synthesis plant, maintenance teams encountered signal instability on a high-pressure synthesis gas compressor. Inspection revealed that installers had over-torqued the internal probe sleeve set screw, crushing the internal coaxial cable sheath inside the 21.7-inch stainless steel sleeve.\u003c\/p\u003e\n\u003cp\u003eOur specialists recommend executing a full sleeve length dry fit prior to final installation. Ensure the internal 1.0 m probe cable glides freely without twisting during penetration sleeve adjustment. Always apply NPT-rated explosion-proof thread sealant on the 3\/4-14 NPT mounting threads to maintain Type 4 ingress protection, and verify that cable seal fittings prevent oil mist from wicking into external junction boxes.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions \u0026amp; Practical Field Advice\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I measure the correct penetration depth when selecting a 21000 series housing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Measure the distance from the outer surface of the machine mounting boss or standoff flange to the outer diameter of the rotating shaft target. Subtract the required probe tip clearance (typically 50 mils \/ 1.27 mm) to determine your exact sleeve penetration length (such as the 21.7-inch option specified here).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the 3300 XL 8 mm probe installed inside this housing be replaced independently of the aluminum body?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. The modular design allows field engineers to loosen the sleeve locknut, withdraw the stainless steel sleeve and probe assembly, and replace the internal transducer element without unthreading the main 3\/4-14 NPT aluminum housing from the machine casing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the mechanical function of the 304 stainless steel sleeve in high-vibration applications?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The 304 stainless steel sleeve acts as a rigid, non-magnetic guide sheath that prevents structural resonance flexing of long probe bodies under high bearing oil turbulence or windage within the machine housing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is NPT thread sealant required on the 3\/4-14 NPT mounting threads during hazardous area installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: To comply with explosion-proof and Type 4 ingress standards, tapered NPT threads must form a gas-tight flame path seal. Using appropriate conductive conduit thread sealant prevents corrosive atmospheric gases from entering the aluminum housing while preventing process fluid leaks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How can I verify that the internal 1.0 m probe cable hasn't twisted inside the housing during installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Before tightening the outer fitting plugs, perform a continuity and resistance test on the coaxial connector while rotating the sleeve adjustment mechanism. Resistance should remain constant; any variance indicates cable pinching or internal torsional stress.\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":45014024880310,"sku":"21000-28-10-00-217-04-02","price":185.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/21000-16-10-15-114-03-02_00223e42-7566-43d3-9536-118260e78bd8.jpg?v=1787817148","url":"https:\/\/www.plcsparehub.com\/products\/21000-28-10-00-217-04-02-proximity-probe-housing-bently-nevada","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}