{"product_id":"bently-nevada-330851-02-000-060-50-00-cn-3300-xl-25-mm-proximity-probe","title":"Bently Nevada 330851-02-000-060-50-00-CN 3300 XL 25 mm Proximity Probe","description":"\u003cp\u003eThe \u003cstrong\u003eBently Nevada 330851-02-000-060-50-00-CN\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e330851\u003c\/strong\u003e Proximity Probe, operates as a dedicated hardware component for non-contact shaft displacement and vibration measurement within 3500 Machinery Protection System networks. It utilizes an eddy-current tip sensing element to translate physical distance variations relative to a conductive target surface into calibrated dynamic AC dynamic vibration and DC gap voltage signals sent to matching 3300 XL Proximitor sensors.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e330851-02-000-060-50-00-CN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBently Nevada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eShipping Weight: 2.0 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eM30x2 thread, 60 mm overall case length, 5.0 m total cable length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-51 deg C to +177 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive physical media (0 W)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProbe Tip Diameter\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Thread\u003c\/td\u003e\n\u003ctd\u003eM30x2 metric thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Type\u003c\/td\u003e\n\u003ctd\u003eIntegrated 5.0 m coaxial lead with ClickLock miniature coaxial connector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEddy-Current Probe Scaling and Rotor Dynamics Tracking\u003c\/h3\u003e\n\u003cp\u003eThe 330851 25 mm proximity probe relies on precise eddy-current probe scaling to generate proportional electrical outputs across wide mechanical measuring ranges. The large 25 mm tip diameter allows for expanded linear displacement tracking, making it suitable for differential expansion and high-amplitude axial thrust monitoring on heavy machinery shafts.\u003c\/p\u003e\n\u003cp\u003eDuring field commissioning, gap voltage validation requires verifying the probe baseline reading against a nominal -10 VDC target at the Proximitor sensor output terminals when the shaft is centered at mechanical equilibrium. Maintaining correct probe mechanical alignment and rigid installation minimizes signal distortion during severe rotor dynamics events while ensuring optimal cross-talk suppression between orthogonal probe channels mounted in close physical proximity.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the integrated 5.0 m cable of the 330851 probe be trimmed or shortened in the field?\u003c\/p\u003e\n\u003cp\u003eA: No. Altering the physical cable length modifies the total electrical capacitance and inductance of the circuit, which destroys the factory calibration, disrupts eddy-current probe scaling, and creates significant scale factor errors during gap voltage validation.\u003c\/p\u003e\n\u003cp\u003eQ: How does the ClickLock miniature coaxial connector maintain signal integrity under machinery vibration?\u003c\/p\u003e\n\u003cp\u003eA: The ClickLock connector features a mechanical locking sleeve that prevents connection loosening under continuous mechanical shock. When paired with a connector protector boot, it isolates the electrical contacts from environmental oil and moisture ingress.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eInspect the 25 mm probe tip, M30x2 thread housing, and miniature coaxial connector for dirt, physical burrs, or lead insulation damage prior to installation.\u003c\/li\u003e\n\u003cli\u003eThread the probe into its rigid mounting bracket or machine casing, ensuring clean thread engagement, and tighten the locknut to the specified mechanical torque.\u003c\/li\u003e\n\u003cli\u003eRoute the 5.0 m integral coaxial cable through grounded metallic conduit or cable trays, maintaining a minimum static bend radius of 25.4 mm (1.0 in).\u003c\/li\u003e\n\u003cli\u003eMaintain a minimum separation distance of 300 mm between the probe cable and high-voltage AC power wiring or variable frequency drive (VFD) output cables to prevent inductive noise pickup.\u003c\/li\u003e\n\u003cli\u003eConnect the miniature coaxial ClickLock lead to the Proximitor extension cable until seated firmly, and pull the rubber connector protector boot over the joined mating junction.\u003c\/li\u003e\n\u003cli\u003ePerform gap voltage validation at the Proximitor output terminals using a digital multimeter; adjust probe insertion depth until the DC voltage matches the system reference target (typically -10 VDC).\u003c\/li\u003e\n\u003cli\u003eConnect the signal cable shield exclusively to instrument earth ground at the monitoring rack end. Leave the shield ungrounded at the probe junction box to prevent ground loop currents.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":43681206730842,"sku":"330851-02-000-060-50-00-CN","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/330101-00-12-10-02-00_1fe4b6b8-b1a9-4964-ad0d-5657093a31d5.png?v=1784518982","url":"https:\/\/www.spareoil.com\/products\/bently-nevada-330851-02-000-060-50-00-cn-3300-xl-25-mm-proximity-probe","provider":"SpareOil Automation","version":"1.0","type":"link"}