{"product_id":"330876-02-50-01-05-bently-nevada-50mm-proximity-sensor","title":"330876-02-50-01-05 Bently Nevada 50mm Proximity Sensor","description":"\u003ch3\u003e\u003cstrong\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e330876-02-50-01-05\u003c\/strong\u003e is a heavy-duty 3300 XL 50 mm eddy current proximity probe engineered by Bently Nevada specifically for large steam turbine differential expansion (DE) monitoring. Constructed with a Polyphenylene Sulfide (PPS) tip, AISI 304 stainless steel threaded body, and high-temperature FluidLoc triaxial cable, this sensor withstands continuous operating temperatures up to 200°C (392°F) and short-term thermal spikes up to 250°C (482°F).\u003c\/p\u003e\n\u003cp\u003eFeatures on the \u003cstrong\u003e330876-02-50-01-05\u003c\/strong\u003e include dual front\/rear environmental seals, flexible stainless steel armor, high-temperature ClickLoc connectors with removable collars, and pre-drilled M14x1.5 locknuts. Its integrated 5.0-meter cable connects directly to a matching 5-meter 3300 XL 50 mm Proximitor sensor without inter-cable extension loss.\u003c\/p\u003e\n\u003ch3\u003eConfiguration Breakdown: 330876-02-50-01-05\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Model:\u003c\/strong\u003e 330876 — 3300 XL 50 mm Proximity Transducer\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e[-02] Probe Case Type:\u003c\/strong\u003e Straight Exit Case with M14x1.5 Metric Threads (21 mm Max Thread Engagement)\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e[-50] Total Length Option:\u003c\/strong\u003e 5.0 Meters (16.4 feet) Integrated System Length\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e[-01] Armor Option:\u003c\/strong\u003e High Temperature FluidLoc Cable with Flexible Stainless Steel Armor\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e[-05] Agency Approval Option:\u003c\/strong\u003e Multiple International Hazardous Area Approvals (CSA, ATEX, IECEx)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications \u0026amp; Environmental Limits\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #0056b3; color: #ffffff;\"\u003e\n\u003cth style=\"text-align: left; width: 35%;\"\u003eEngineering Parameter\u003c\/th\u003e\n\u003cth style=\"text-align: left; width: 65%;\"\u003eDesign Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer \u0026amp; Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBently Nevada 3300 XL 50 mm Transducer Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFull Model Code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e330876-02-50-01-05\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProbe Tip Construction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolyphenylene Sulfide (PPS) with Dual Moisture Barrier Seals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProbe Case Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAISI 304 Stainless Steel (SST) with Pre-drilled Safety Wire Locknut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCase Thread \u0026amp; Outer Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM14x1.5 Metric Thread (21 mm Thread Length); 1.99 in Outer Body Diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Construction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e75 Ω Triaxial PFA Insulated High-Temp FluidLoc Cable with Stainless Steel Armor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntegrated Cable Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.0 Meters (16.4 Feet) Direct-Connect System Cable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDC Conductor Resistance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7.6 ± 0.8 Ω (Center Conductor to Outer Coaxial Conductor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContinuous Operating Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-35°C to +200°C (-31°F to +392°F) Continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShort-Term Excursion Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to +250°C (+482°F) for Excursions under 24 Hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnector Interface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-Temperature ClickLoc Connector with Removable Collar \u0026amp; Protectors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHazardous Area Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOption -05 Multiple Approvals (Intrinsically Safe \/ Non-Incendive Zones)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCross-Model Specification Comparison \u0026amp; Engineering Guidance\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f2f2f2;\"\u003e\n\u003cth style=\"text-align: left; width: 25%;\"\u003eConfiguration Metric\u003c\/th\u003e\n\u003cth style=\"text-align: left; width: 37.5%;\"\u003eCurrent Model: 330876-02-50-01-05\u003c\/th\u003e\n\u003cth style=\"text-align: left; width: 37.5%;\"\u003eAlternate Option: \u003ca href=\"https:\/\/www.plcsparehub.com\/products\/330876-03-90-01-00-bently-nevada-3300-xl-50mm-probe\" target=\"_blank\"\u003e330876-03-90-01-00\u003c\/a\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCase Mounting Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eM14x1.5 Metric Straight Exit Case (Option -02)\u003c\/td\u003e\n\u003ctd\u003eSide Exit Mounting Bracket Housing (Option -03)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal System Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.0 Meters \/ 16.4 Feet (Option -50)\u003c\/td\u003e\n\u003ctd\u003e9.0 Meters \/ 29.5 Feet (Option -90)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtective Cable Armor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eArmored FluidLoc High-Temp Cable (Option -01)\u003c\/td\u003e\n\u003ctd\u003eArmored FluidLoc High-Temp Cable (Option -01)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAgency Certification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMultiple Hazardous Approvals (Option -05)\u003c\/td\u003e\n\u003ctd\u003eStandard Uncertified \/ No Approvals (Option -00)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eEngineering Selection Strategy:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Spatial Requirements:\u003c\/strong\u003e The M14x1.5 metric straight case (-02) provides fine axial thread positioning through machine casing walls. If radial clearance behind the turbine housing is tight, choose side-exit bracket models like the \u003ca href=\"https:\/\/www.plcsparehub.com\/products\/330876-03-90-01-00-bently-nevada-3300-xl-50mm-probe\" target=\"_blank\"\u003e330876-03-90-01-00\u003c\/a\u003e to route cables perpendicular to the target.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Length Matching:\u003c\/strong\u003e Suffix -50 (5.0m) connects directly to a 5-meter Proximitor without extension cables, reducing signal connection points. Ensure your Proximitor sensor part number matches the probe cable length rating (5m probe with 5m Proximitor).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTarget Machinery \u0026amp; Industrial Application Environments\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUtility Steam Turbine Generators:\u003c\/strong\u003e Rotor-to-stator differential expansion measurement across high-pressure (HP) and intermediate-pressure (IP) turbine casings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNuclear Power Turbomachinery:\u003c\/strong\u003e Long-range linear shaft displacement tracking subject to high thermal expansion cycling and steam ingress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge Gas Turbines:\u003c\/strong\u003e Thermal casing growth and axial thrust position monitoring in hazardous division power plants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial Boiler Feed Drives:\u003c\/strong\u003e Rotor position surveillance in wet, high-temperature condensate environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic Features \u0026amp; Electrical Inspection\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFluidLoc triaxial cable construction blocks high-pressure steam condensate from wicking along internal cable strands into junction boxes.\u003c\/li\u003e\n\u003cli\u003eClickLoc gold-plated connectors feature removable collars to facilitate pulling cable runs through tight conduit elbows without pin damage.\u003c\/li\u003e\n\u003cli\u003eAllows field verification of coil integrity using a digital multimeter; normal center-to-coaxial resistance measures exactly 7.6 ± 0.8 Ω at room temperature.\u003c\/li\u003e\n\u003cli\u003eDelivers an extended linear dynamic range (up to 50 mm) for tracking large mechanical growth without sensor saturation or scale wrapping.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cp\u003eWhen installing 50 mm differential expansion probes like the \u003cstrong\u003e330876-02-50-01-05\u003c\/strong\u003e, mechanical alignment relative to the target collar edge is critical. Because a 50 mm tip projects a wide electromagnetic field, installing the probe tip within 75 mm of adjacent structural steel or machine ribs causes side-loading field attenuation, distorting the linear scale curve of the 3300 XL Proximitor sensor.\u003c\/p\u003e\n\u003cp\u003eDuring a steam turbine overhaul, site engineers reported non-linear output readings on a newly fitted \u003cstrong\u003e330876-02-50-01-05\u003c\/strong\u003e transducer. Our technical check revealed that the M14x1.5 body was threaded through an un-counterbored steel bracket, causing the 1.99-inch sensor head to sit too close to the mounting frame. Re-machining the clearance pocket to maintain a minimum 100 mm radial clearance around the PPS tip eliminated stray eddy current loading, restoring clean -200 mV\/mm linear scale accuracy across the entire differential expansion range.\u003c\/p\u003e\n\u003ch3\u003eLogistics, Handling \u0026amp; Warranty Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply Condition:\u003c\/strong\u003e Delivered 100% brand-new and original in sealed factory Bently Nevada packaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory Warranty:\u003c\/strong\u003e Covered by a full 12-month replacement warranty effective from ship date.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpress Global Courier:\u003c\/strong\u003e Expedited international shipping via priority service with FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrder Fulfillment:\u003c\/strong\u003e Factory inventory dispatched from warehouse within 24 to 48 hours following order confirmation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEngineering Selection FAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWhy is matching the 5.0-meter probe cable directly to a 5-meter Proximitor sensor required?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe total electrical length of the probe cable forms an integral part of the resonant LC tank circuit inside the Proximitor sensor. Connecting a 5m probe to a 9m Proximitor changes the circuit inductance, causing severe scale factor errors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of FluidLoc cable technology on steam turbine applications?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFluidLoc cable features internal PFA insulation barriers that prevent steam, moisture, and synthetic oils from traveling through the interior of the cable sheath if the outer jacket is cut or compromised in service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow can a field technician verify if a 330876 probe coil has suffered thermal degradation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMeasure the DC resistance between the center conductor and outer coaxial conductor using a calibrated multimeter. Standard resistance is 7.6 ± 0.8 Ω; readings above 10 Ω or short circuits indicate thermal breakdown inside the PPS tip assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the M14x1.5 thread option require a specific installation torque?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, do not exceed 20 N·m (15 ft-lbs) of mounting torque on the M14x1.5 casing thread. Always secure the included pre-drilled locknut with stainless steel safety wire to prevent loosening under heavy machine vibration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the ClickLoc connector collar be removed during cable pull through tight conduits?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the ClickLoc connector includes a removable collar that unclips to reduce the overall connector diameter, allowing the cable to slide smoothly through narrow conduit runs without snagging internal walls.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/330876_3300_XL_50_mm_Proximity_Probe_d5ef374a-d927-47a6-84ef-9c866610abd8.png?v=1785398683\" alt=\"\"\u003e\u003c\/p\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":45013958295734,"sku":"330876-02-50-01-05","price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/BentlyNevada330876_4_a9dd8cda-5253-4a2e-a5ef-a80003a230e7.jpg?v=1788428589","url":"https:\/\/www.plcsparehub.com\/products\/330876-02-50-01-05-bently-nevada-50mm-proximity-sensor","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}