{"product_id":"bently-nevada-330851-02-000-050-50-00-00-3300-xl-25-mm-proximity-probe","title":"Bently Nevada 330851-02-000-050-50-00-00 3300 XL 25 mm Proximity Probe","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003e\nEngineered for high-precision displacement and vibration measurements in heavy rotating machinery, the \u003cstrong\u003eBently Nevada 330851-02-000-050-50-00-00\u003c\/strong\u003e operates as a ruggedized 25 mm Eddy current proximity sensor. This transducer is specifically designed to monitor shaft vibration, axial position, and differential expansion in critical industrial assets such as steam turbines, gas turbines, and large-scale compressors. Utilizing a high-integrity Polyetheretherketone (PEEK) tip and a corrosion-resistant AISI 304 stainless steel threaded case, this \u003cstrong\u003e3300 XL 25 mm Proximity Probe\u003c\/strong\u003e delivers reliable performance under demanding mechanical and thermal conditions. It features a 75 ohm triaxial, PFA-insulated FluidLoc probe cable designed to prevent moisture and fluid migration through the internal cable core, ensuring stable signal transmission to the associated Proximitor sensor.\n\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eRobust PEEK Tip:\u003c\/strong\u003e Manufactured with Polyetheretherketone (PEEK) to ensure chemical compatibility and structural resilience in aggressive environments.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eStainless Steel Threaded Case:\u003c\/strong\u003e Built with AISI 304 stainless steel to protect internal coil electronics and withstand industrial process fluids.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eFluidLoc Cable Technology:\u003c\/strong\u003e Equipped with a 75 ohm triaxial cable with perfluoroalkoxyethylene (PFA) insulation to halt fluid bypass down the interior of the cable sheath.\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003e\n\u003cstrong\u003eStandardized Metric Mounting:\u003c\/strong\u003e Features an M30x2 threaded casing with a 50 mm case length for secure, vibration-resistant structural positioning.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eSteam and gas turbine rotor expansion and vibration monitoring\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eHigh-speed centrifugal compressor shaft displacement profiling\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eFluid-film bearing clearance and oil film thickness measurements\u003c\/li\u003e\n  \u003cli style=\"margin-bottom: 0.5rem;\"\u003eHydroelectric generator shaft alignment and thermal expansion tracking\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eModel Code Configuration\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d;\"\u003e\n        \u003cth style=\"padding: 0.5rem; font-weight: bold;\"\u003eOption Code\u003c\/th\u003e\n        \u003cth style=\"padding: 0.5rem; font-weight: bold;\"\u003eConfiguration Value\u003c\/th\u003e\n        \u003cth style=\"padding: 0.5rem; font-weight: bold;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003e02\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eM30x2 Thread\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eMetric threaded probe case\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003e000\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e0 mm\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eUnthreaded case length\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003e050\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e50 mm\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eOverall case length (Metric)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003e50\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e5.0 meters (16.4 feet)\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eTotal cable length\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003e00\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eNo Armor\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eStandard cable outer sheath without protective armor\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003e00\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eNo Approvals\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eStandard non-certified agency approval option\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; text-align: left;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #1a365d;\"\u003e\n        \u003cth style=\"padding: 0.5rem; font-weight: bold;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 0.5rem; font-weight: bold;\"\u003eSpecification Value\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eBently Nevada\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eModel Number\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e330851-02-000-050-50-00-00\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eProbe Tip Diameter\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e25 mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eProbe Tip Material\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003ePolyetheretherketone (PEEK)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eCase Material\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eAISI 304 stainless steel (SST)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eCable Impedance\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e75 ohm (triaxial)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eCable Insulation\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003ePerfluoroalkoxyethylene (PFA) with FluidLoc barrier\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eOperating Temperature Range\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e-35 degC to +200 degC (-31 degF to +392 degF)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eNet Sensor Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e0.230 kg (0.51 lbs)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eShipping Weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003e1.3 kg (2.87 lbs)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 0.5rem; font-weight: bold;\"\u003eCountry of Origin\u003c\/td\u003e\n        \u003ctd style=\"padding: 0.5rem;\"\u003eUnited States (USA)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eEmpirical Engineering Insights\u003c\/h3\u003e\n\u003ch4 style=\"color: #1a365d; font-size: 1.1rem; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eAlternative Models \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003e\nThe 3300 XL 25 mm proximity probe system is designed specifically for large-scale application parameters such as differential expansion and keyphaser measurements. It must be paired exclusively with a matching \u003cstrong\u003e3300 XL 25 mm Proximitor Sensor\u003c\/strong\u003e. Standard 3300 XL 8 mm or 11 mm Proximitor drivers will fail to properly calibrate or drive this 25 mm probe coil due to differences in inductive coil impedance and excitation frequencies. If replacing an older, legacy 7200 series 25 mm system, ensure that both the probe and the proximitor are upgraded simultaneously, as the legacy 7200 driver circuitry is incompatible with the 3300 XL platform.\n\u003c\/p\u003e\n\n\u003ch4 style=\"color: #1a365d; font-size: 1.1rem; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003e\nDue to the large 25 mm sensing tip, the sensor has a significantly wider electromagnetic field footprint compared to smaller 8 mm sensors. Engineers must maintain a minimum clear lateral spacing around the probe tip to prevent side-viewing errors and parasitic interference from structural brackets or machine casings. Mounting the probe too close to adjacent metal structural members will alter the coil's magnetic field path, leading to offset calibration errors and incorrect displacement readings. Always verify that the target material matches the calibration standards (typically AISI 4140 steel) of the matching Proximitor sensor.\n\u003c\/p\u003e\n\n\u003ch4 style=\"color: #1a365d; font-size: 1.1rem; margin-top: 1rem; margin-bottom: 0.5rem;\"\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h4\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003e\nEnsure that the mechanical mounting torque does not exceed manufacturer recommendations for the M30x2 thread; over-tightening can deform the internal coil housing. Always protect the miniature coaxial connection between the probe cable and the extension cable. Moisture ingress or dust inside this connector will degrade the high-frequency RF signal, causing erroneous high-amplitude noise or \"spiking\" on the monitor display. Use self-fusing silicone connector wrap or Bently Nevada connector protection sleeves to isolate and protect the physical cable junction.\n\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem; border-radius: 4px;\"\u003e\n  \u003cp style=\"color: #9b2c2c; font-weight: bold; margin: 0 0 0.5rem 0;\"\u003eCRITICAL WARNING\u003c\/p\u003e\n  \u003cp style=\"color: #9b2c2c; margin: 0;\"\u003e\n    Before starting the installation or removal of the proximity probe, ensure the target machine is completely de-energized and locked out under safe mechanical and electrical work protocols. Ensure all monitor power is switched off before disconnecting or connecting the sensor coaxial lines to avoid electrostatic discharge (ESD) and potential damage to delicate front-end Proximitor amplifier circuits.\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"margin-bottom: 1.5rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e1\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eVerify that the probe mounting hole is clean, free of metal chips, and dry before threading in the M30x2 probe housing.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e2\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eThread the probe into the mounting bracket or casing until the correct electrical gap is set using a digital voltmeter measuring the Proximitor's DC output voltage (typically -10 VDC for the mid-range of standard calibration).\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; margin-bottom: 1rem;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e3\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eTighten the locknut to secure the probe, ensuring that the probe housing does not rotate and alter the calibrated gap distance during final torque application.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start;\"\u003e\n    \u003cspan style=\"background-color: #2b6cb0; color: #ffffff; width: 28px; height: 28px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; margin-right: 0.75rem; flex-shrink: 0;\"\u003e4\u003c\/span\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eConnect the coaxial interface to the extension cable, apply a protective connector sleeve, and secure the cable along its run using non-conductive, vibration-resistant mounting clips.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bently Nevada","offers":[{"title":"Default Title","offer_id":52668309569899,"sku":"330851-02-000-050-50-00-00","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/330851-02-000-050-50-00-00-4sm1rosqpfb_cf775f02-404b-4f85-a844-e02381b112af.jpg?v=1765520801","url":"https:\/\/www.plcprotech.com\/de\/products\/bently-nevada-330851-02-000-050-50-00-00-3300-xl-25-mm-proximity-probe","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}