{"product_id":"bently-nevada-330881-28-04-70-03-02-proximity-transducer-xl-series","title":"Bently Nevada 330881-28-04-70-03-02 Proximity Transducer XL Series","description":"\u003cp\u003eConfigured for precision shaft position monitoring in rotating machinery, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBently Nevada 330881-28-04-70-03-02\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e330881\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProximity Transducer) provides direct physical execution of displacement sensing. The hardware facilitates eddy-current coupling to convert axial or radial shaft motion into a proportional electrical signal, serving as a primary sensing element for machine protection instrumentation.\u003c\/p\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\u003e330881-28-04-70-03-02\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\u003e0.8 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\u003e30 x 20 x 15 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-35 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\u003e12 mA nominal\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eTransducer Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eEddy-Current Proximity\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eMechanical Monitoring and TSI Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 330881 transducer system relies on consistent eddy-current probe scaling to ensure linear output relative to the target gap. Proper installation requires verification of gap voltage validation, with typical -10 VDC targets representing the linear operating range of the sensor. Monitoring rotor dynamics necessitates correct probe orientation to prevent signal corruption; furthermore, in multi-channel installations, users must employ effective cross-talk suppression techniques by maintaining proper probe-to-probe physical spacing and ensuring distinct frequency modulation of the carrier signals to avoid beat-frequency interference.\u003c\/p\u003e\n\u003ch3\u003eProbe Locknut Torque Specifications\u003c\/h3\u003e\n\u003cp\u003eTo maintain stable probe positioning and prevent mechanical drift or vibration-induced loosening, adhere to the following torque guidelines for Bently Nevada 3300 XL series probes:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStandard Mounting (Jam Nut):\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eFor 3\/8-24 threaded probes: Tighten the locknut to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e5.6 Nm (50 in-lb)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFor 1\/4-28 threaded probes: Tighten the locknut to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1.7 Nm (15 in-lb)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation Procedure:\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure the probe threads are clean and free of debris.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUse a calibrated torque wrench to prevent stripping the threads or cracking the probe housing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAvoid using thread-locking compounds (e.g., Loctite) unless explicitly approved, as these can interfere with grounding and future removal.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOnce the desired gap is achieved, tighten the locknut while holding the probe body stationary to prevent the probe from rotating and altering the gap setting during the tightening process.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\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\u003eProbe Positioning: Ensure the probe tip is installed within the linear operating range relative to the shaft target; verify via gap voltage measurement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCabling: Use only Bently Nevada-approved coaxial cables to maintain system impedance matching; avoid excessive cable strain or tight bend radii.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGrounding: Maintain a single point of reference for the transducer system to prevent ground loops that introduce noise into the vibration monitoring circuit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnvironment: Protect all connectors from moisture and conductive debris, which can create parasitic capacitance and shift the transducer output.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOrdering Info\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003ePackage contents: One (1) 330881 Proximity Transducer probe.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDocumentation: Includes standard calibration certificate and installation documentation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatibility: Must be paired with a compatible 3300 XL Proximitor sensor for complete system calibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the significance of the -10 VDC gap voltage target?\u003c\/p\u003e\n\u003cp\u003eA: The -10 VDC target corresponds to the center of the linear range of the eddy-current transducer; operating outside this range can lead to signal clipping or non-linear output response.\u003c\/p\u003e\n\u003cp\u003eQ: How can I minimize cross-talk between adjacent probes?\u003c\/p\u003e\n\u003cp\u003eA: Cross-talk is minimized by maintaining a minimum physical separation distance between probe tips, as specified in the installation manual, or by selecting probes with different carrier frequencies if available.\u003c\/p\u003e\n\u003cp\u003eQ: Can the probe cable be shortened in the field?\u003c\/p\u003e\n\u003cp\u003eA: No, the total system length is calibrated as a set (probe, extension cable, and Proximitor); changing cable length will alter the resonant frequency and invalidate the system calibration.\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45518887321773,"sku":"330881-28-04-70-03-02","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/bently-nevada-330881-28-04-70-03-02-proxpac-xl-proximity-transducer-jsukyfzpbfr.jpg?v=1766981123","url":"https:\/\/www.maxwellplc.com\/products\/bently-nevada-330881-28-04-70-03-02-proximity-transducer-xl-series","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}