{"product_id":"bently-nevada-21128-02-01-velocity-transducer-housing","title":"Bently Nevada 21128-02-01 Velocity Transducer Housing","description":"\u003ch3\u003e\u003cstrong\u003eBently Nevada \u003cspan style=\"color: #0056b3;\"\u003e21128-02-01 MOD 148264-02\u003c\/span\u003e Product Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada \u003cspan style=\"color: #0056b3;\"\u003e21128-02-01 MOD 148264-02\u003c\/span\u003e\u003c\/strong\u003e is a premium velocity transducer housing. It shields delicate industrial sensors from harsh environmental damage.\u003c\/p\u003e\n\u003cp\u003eThis rugged housing withstands high-pressure water jets and highly corrosive atmospheres. It features a heavy-duty 303 stainless steel body.\u003c\/p\u003e\n\u003cp\u003eThe assembly meets NEMA 4X and IP65 requirements when you install it correctly. It excels in non-hazardous industrial process areas.\u003c\/p\u003e\n\u003cp\u003eThe integrated Neoprene O-ring blocks moisture infiltration during operation. This protection preserves critical signal transmission path integrity.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada \u003cspan style=\"color: #0056b3;\"\u003e21128\u003c\/span\u003e\u003c\/strong\u003e series provides reliable environmental isolation for vibration monitoring systems. Mechanical maintenance teams choose this housing for critical plant assets.\u003c\/p\u003e\n\u003cp\u003eIt acts as a physical shield for delicate seismic and velocity sensors. The 303 stainless steel structure absorbs high mechanical impacts.\u003c\/p\u003e\n\u003cp\u003eThis protection helps prevent sensor calibration shift from structural knocks. It reduces unplanned downtime in power generation and processing plants.\u003c\/p\u003e\n\u003cp\u003eThe modular cap design allows field upgrades for tall-profile sensor models. This housing simplifies sensor changeouts during scheduled maintenance windows.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 20px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f8f9fa;\"\u003e\n\u003cth style=\"text-align: left; padding: 10px; font-weight: bold; border-bottom: 2px solid #dee2e6;\"\u003eParameter Category\u003c\/th\u003e\n\u003cth style=\"text-align: left; padding: 10px; font-weight: bold; border-bottom: 2px solid #dee2e6;\"\u003eSpecification Details\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; font-weight: bold; border-bottom: 1px solid #dee2e6;\"\u003eBrand \u0026amp; Manufacturer\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border-bottom: 1px solid #dee2e6;\"\u003e\u003cstrong\u003eBently Nevada\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; font-weight: bold; border-bottom: 1px solid #dee2e6;\"\u003eModel Number\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border-bottom: 1px solid #dee2e6;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e21128-02-01\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; font-weight: bold; border-bottom: 1px solid #dee2e6;\"\u003eAccessories Code\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border-bottom: 1px solid #dee2e6;\"\u003e\u003cstrong\u003eMOD 148264-02\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; font-weight: bold; border-bottom: 1px solid #dee2e6;\"\u003eHousing Material\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border-bottom: 1px solid #dee2e6;\"\u003e303 Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; font-weight: bold; border-bottom: 1px solid #dee2e6;\"\u003eO-Ring Elastomer\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border-bottom: 1px solid #dee2e6;\"\u003eNeoprene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; font-weight: bold; border-bottom: 1px solid #dee2e6;\"\u003eNet Weight\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border-bottom: 1px solid #dee2e6;\"\u003e1.6 kg (3.55 lb) without sensor or fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; font-weight: bold; border-bottom: 1px solid #dee2e6;\"\u003eMounting Thread (AA)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border-bottom: 1px solid #dee2e6;\"\u003e02 = 3\/4-in 14 NPT outer thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; font-weight: bold; border-bottom: 1px solid #dee2e6;\"\u003eCable Exit Fitting (BB)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border-bottom: 1px solid #dee2e6;\"\u003e01 = 1\/2-in NPT plug\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; font-weight: bold; border-bottom: 1px solid #dee2e6;\"\u003eInternal Sensor Mounting Thread\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border-bottom: 1px solid #dee2e6;\"\u003e1\/2-in 20 UNF inner thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; font-weight: bold; border-bottom: 1px solid #dee2e6;\"\u003eTemperature Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border-bottom: 1px solid #dee2e6;\"\u003e-29°C to +121°C (-20°F to +250°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; font-weight: bold; border-bottom: 1px solid #dee2e6;\"\u003eIngress \u0026amp; Environmental Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border-bottom: 1px solid #dee2e6;\"\u003eNEMA 4X \/ IP65 compliant (moisture \u0026amp; corrosion-resistant; not submersible)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; font-weight: bold; border-bottom: 1px solid #dee2e6;\"\u003eSensor Compatibility Parameters\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border-bottom: 1px solid #dee2e6;\"\u003eAccommodates sensors with matching frequency, sensitivity, linearity, and resolution limits.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eTarget Equipment Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBently Nevada \u003cspan style=\"color: #0056b3;\"\u003e21128\u003c\/span\u003e\u003c\/strong\u003e housing safely hosts several specialized vibration sensors:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eVelomitor CT Velocity Transducer\u003c\/strong\u003e (requires the optional tall cap configuration)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003e9200 Seismoprobe Velocity Transducer\u003c\/strong\u003e (requires the tall cap when using an isolated base)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003e74712 Seismoprobe Velocity Transducer\u003c\/strong\u003e (requires the tall cap when using an isolated base)\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eStandard low-profile \u003cstrong\u003eBently Nevada\u003c\/strong\u003e velocity and accelerometers with 1\/2-in 20 UNF mounting threads\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTypical Applications and Diagnostic Capabilities\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eCooling Tower Fans:\u003c\/strong\u003e Protects sensors against constant water spray and dense humidity.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eHydroelectric Turbines:\u003c\/strong\u003e Shields critical monitoring points from high moisture and leakage risks.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003ePulp and Paper Mills:\u003c\/strong\u003e Guards transducers against caustic chemical washdown procedures.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003ePredictive Maintenance:\u003c\/strong\u003e Enables clean, noise-free diagnostic signals for early bearing wear detection.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eStructural Vibration Analysis:\u003c\/strong\u003e Secures seismic transducers during long-term machine foundation monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation and Mounting Guidelines\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eClean the machine mounting surface to ensure complete metal-to-metal contact.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eApply thread sealant to the 3\/4-in NPT mounting threads before installation.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eTorque the housing securely to prevent loosening from machine vibration.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eVerify the internal 1\/2-in 20 UNF thread is clear of debris.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eThread the target velocity sensor into the base and tighten to specification.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eInspect the Neoprene O-ring for proper seating before tightening the housing cap.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCommissioning \u0026amp; Maintenance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eCheck the O-ring integrity during scheduled annual sensor calibration cycles.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eReplace damaged O-rings immediately to preserve the IP65 rating.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eKeep the 1\/2-in NPT cable conduit connection tight to prevent water entry.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eWipe the stainless steel housing exterior with mild solvents during routine cleanings.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003eVerify the cable connection remains dry and free of corrosion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eShipping, Packaging \u0026amp; Warranty Terms\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e 1 x \u003cstrong\u003eBently Nevada \u003cspan style=\"color: #0056b3;\"\u003e21128-02-01\u003c\/span\u003e\u003c\/strong\u003e Housing with Neoprene O-ring, 1 x 1\/2-in NPT plug.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eWarranty Coverage:\u003c\/strong\u003e Full 12-Month Quality Guarantee against material and manufacturing defects.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eShipping Carrier Options:\u003c\/strong\u003e Reliable express delivery via FedEx, UPS, or DHL.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eDispatch Window:\u003c\/strong\u003e Packaged and shipped within 24 to 48 hours of order confirmation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eBuying Guide \u0026amp; Selection Criteria\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eHazardous vs. Non-Hazardous:\u003c\/strong\u003e Use \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e21128\u003c\/span\u003e\u003c\/strong\u003e for safe areas. Select \u003cstrong\u003eCA21128\u003c\/strong\u003e for Class I\/II\/III Div 1 explosion-proof areas.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eCap Height Choice:\u003c\/strong\u003e Order the tall cap if installing a \u003cstrong\u003eVelomitor CT\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eBase Isolation Check:\u003c\/strong\u003e Order the tall cap if using an isolated base with a \u003cstrong\u003e9200\u003c\/strong\u003e or \u003cstrong\u003e74712 Seismoprobe\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 5px;\"\u003e\n\u003cstrong\u003eThread Standard:\u003c\/strong\u003e Verify your machinery accepts 3\/4-in NPT outer threads before finalizing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this housing in Class I, Division 1 hazardous areas?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. The standard \u003cstrong\u003e\u003cspan style=\"color: #0056b3;\"\u003e21128\u003c\/span\u003e\u003c\/strong\u003e is for non-hazardous locations. You must buy the certified \u003cstrong\u003eCA21128\u003c\/strong\u003e version for explosion-proof applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which cable do I need to connect my Velomitor inside this housing to a monitor?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: You must use the \u003cstrong\u003eBently Nevada\u003c\/strong\u003e cable part number \u003cstrong\u003e89477-AA\u003c\/strong\u003e for proper connections.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the housing come with the internal velocity sensor pre-installed?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. The housing ships without a velocity sensor. You must order the sensor separately and install it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this housing be submerged underwater?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No. The housing is highly water-resistant and corrosion-resistant. However, it is not rated for continuous submersion.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/21128.png?v=1784274711\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45267342491830,"sku":"21128-02-01","price":163.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/21128-_3.jpg?v=1784274699","url":"https:\/\/www.plcsparehub.com\/products\/bently-nevada-21128-02-01-velocity-transducer-housing","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}