{"product_id":"bently-nevada-21000-16-05-15-084-03-02-proximity-probe-housing-assemblies-21000-series","title":"Bently Nevada 21000-16-05-15-084-03-02 Proximity Probe Housing Assemblies 21000 Series","description":"\u003cp\u003eConfigured for mechanical protection and alignment of eddy-current sensors in rotating machinery, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 21000-16-05-15-084-03-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e21000\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProbe Housing Assembly) provides direct physical housing for 3300 XL 8mm proximity probes. The assembly ensures stable sensor positioning to facilitate accurate clearance and vibration measurement.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown and Configuration Matrix\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003ePart Number: 21000-16-05-15-084-03-02\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProbe Type: 16 - 3300 XL 8 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCable Length: 05 - 0.5 m (20 in)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMinimum Housing Length: 15 - 1.5 in (38 mm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFitting\/Seal: 03 - One 3\/4-14 NPT plug, one 3\/4-14 to 1\/2-14 NPT reducer, and cable seal grip\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThread Specification: 02 - 3\/4-14 NPT\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e21000-16-05-15-084-03-02\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBently Nevada\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.08 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eShipping Dimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8.5 x 8.5 x 30.5 cm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-34 deg C to +177 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower Consumption\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePassive (None)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProbe Diameter\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eThread Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3\/4-14 NPT\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMechanical Monitoring and Probe Dynamics\u003c\/h3\u003e\n\u003cp\u003eThe integrity of proximity probe data depends on rigid mounting to minimize mechanical resonance and signal noise. For correct eddy-current probe scaling, the probe tip must be installed within the housing to ensure a linear output characteristic. During setup, installers must perform gap voltage validation to ensure a -10 VDC target (or specific calibration curve range) is achieved relative to the target surface. Proper assembly of the cable seal grip is required to achieve cross-talk suppression and prevent moisture ingress, which can interfere with the transducer’s high-frequency carrier signal and subsequent rotor dynamics data.\u003c\/p\u003e\n\u003ch3\u003eOrdering Info\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e1 21000 Series Probe Housing Assembly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 3\/4-14 NPT plug\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 3\/4-14 to 1\/2-14 NPT reducer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 Cable seal grip set (includes grommets for 1\/8 to 3\/16 inch, 1\/4 to 5\/16 inch, and 5\/16 to 3\/8 inch cable diameters)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHousing Alignment:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThread the housing into the machine casing to the required depth to achieve the probe’s linear operating range.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSeal Security:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSelect the correct grommet size based on the probe cable diameter to ensure a liquid-tight seal at the cable grip.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLocking:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUtilize the provided NPT plugs and reducers to seal unused ports, maintaining the environmental integrity of the housing assembly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShielding:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnsure the cable shield is terminated according to site grounding practices to minimize electrical interference.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the purpose of the 3\/4-14 NPT reducer?\u003c\/p\u003e\n\u003cp\u003eThe reducer allows for adaptation of the housing assembly to smaller 1\/2-14 NPT conduit or instrumentation ports commonly found in machinery casing setups.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow is the probe depth adjusted?\u003c\/p\u003e\n\u003cp\u003eProbe depth is adjusted by threading the probe assembly within the housing. Once the correct gap is set, the lock nut must be tightened to prevent movement due to vibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes this housing support other probe diameters?\u003c\/p\u003e\n\u003cp\u003eThis model is specifically configured for 8 mm 3300 XL probes. Use with other probe types may result in improper fitment and loss of sensing accuracy.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan I use Teflon tape on the NPT threads?\u003c\/p\u003e\n\u003cp\u003eYes, PTFE (Teflon) tape is recommended for NPT threads to ensure a pressure-tight seal and prevent oxidation in the thread interface.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow do I verify the probe gap?\u003c\/p\u003e\n\u003cp\u003eThe gap is verified using a feeler gauge between the probe tip and the target surface, confirming the voltage output matches the sensor’s calibration curve.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs the housing assembly pressure rated?\u003c\/p\u003e\n\u003cp\u003eThe assembly is designed for standard machinery environments. For high-pressure applications, ensure the NPT connection is rated for the specific process pressure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens if the cable seal is not tightened?\u003c\/p\u003e\n\u003cp\u003eFailure to tighten the cable seal allows oil or process fluids to travel along the cable, which can degrade the insulation and cause erroneous signal readings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes this assembly include a proximity probe?\u003c\/p\u003e\n\u003cp\u003eYes, the model code specifies the inclusion of a 3300 XL 8 mm proximity probe within the housing assembly package.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":46026775888045,"sku":"21000-16-05-15-084-03-02","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/21000-16-2.webp?v=1783410944","url":"https:\/\/www.maxwellplc.com\/products\/bently-nevada-21000-16-05-15-084-03-02-proximity-probe-housing-assemblies-21000-series","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}