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      330851-02-000-070-10-00-05

      Proximity Probe
      Product image is representative; revision or series may vary. Contact us to request a specific version.

      Product Describe：

      3300 XL 25mm Non-contacting 
      Eddy Current Proximity Probe
      Fully Threaded Case 
      (0 mm Unthreaded Length)
      Extended-Range
      Large-Displacement Measurement

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      Technical specifications for 330851-02-000-070-10-00-05

      • Manufacturer:
        Bently Nevada
      • Product Category:
        Machinery Monitoring Systems
      • Spare Part Number:
        330851-02-000-070-10-00-05
      • Estimated shipping dimensions:
        117.5x5x5cm
      • Weight:
        0.42 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        USA
      • Probe Case Type Option:
        M30x2 thread
      • Unthreaded Length Option:
        0 mm
      • Overall Case Length Option:
        70 mm
      • Total Length Option:
        1.0 metre (3.3 feet)
      • Armor Option:
        No Armor
      • Agency Approval Option:
        Multiple Approvals
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      Information

      Overview Manuals Common Applications Product Precautions
      The 330851-02-000-070-10-00-05 is a specific configuration of the 21000 Proximity Probe Housing Assembly, designed for mounting proximity probes in industrial environments. It is often used to house 3300 XL series probes and is manufactured by Baker Hughes.
        • 12.7 mm Massive Linear Range
        • Seamless Legacy Upgrade
        • Global Multi-Ex Certified
      The 3300 XL 25 mm Transducer System consists of a separate 25 mm probe (Model 330851), an extension cable, and a 3300 XL 25 mm Proximitor Sensor. The 0.787 V/mm (20 mV/mil) output gives this system a linear range of 12.7 mm (500 mils). Based on this linear range, the 3300 XL 25 mm Transducer System is suitable for measuring differential expansion (DE) on mid-size to large steam turbine generators caused by the difference in growth rates between the turbine rotor and the machine stator (casing). The 3300 XL 25 mm probe fits various configurations to replace older 7200 and 25 mm DE Integral systems, with an identical output for easy upgrades without monitor reconfiguration.

      Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. 
       Bently Nevada 330851-02-000-070-10-00-05 Proximity Probe Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
      Iron & Steel
      Measures the differential expansion on giant blast furnace blower driving turbines, resisting intense localized heat and metallic dust.

      Liquefied Natural Gas
      Monitors large-scale refrigerant compressors driven by industrial gas or steam turbines, tracking rotor growth under extreme temperature gradients.

      Thermal Power
      Monitors the critical differential expansion between the high-pressure turbine rotor and casing during startup and load swings to prevent catastrophic blade friction.

      Nuclear Power
      Tracks the axial growth discrepancies of massive steam turbine rotors in the conventional island, ensuring safe operation within high-moisture steam environments.

      Petrochemical & Ethylene Cracking
      Safeguards large-scale charge gas compressors and driving turbines, measuring thermal rotor movement under hazardous, volatile chemical conditions.

       When using the 330851-02-000-070-10-00-05 probe, always follow these critical guidelines. Precisely calibrate the M30 thread depth and initial gap voltage (typically targeting around -10 Vdc) during setup to prevent the massive thermal expansion of the rotor from physically smashing the probe tip. Keep the unarmored cable bend radius above 25.4 mm and seal the ClickLoc connector with oil-resistant heat-shrink sleeves to block hot oil or moisture. Lastly, this -05 global Ex-certified model must be wired into intrinsically safe loops, with the shielding grounded at the monitor rack end only to avoid signal noise.

      FAQ View All FAQ

      • What is 330851-02-000-070-10-00-05?
        It is a non-contacting eddy current proximity probe featuring a large sensing face and a long linear measurement range.
      • What is the measuring principle of 330851-02-000-070-10-00-05?
        It works on the high-frequency Eddy Current principle.
      • What is the linear measurement range of the system using 330851-02-000-070-10-00-05?
        The system features an extended, long-stroke linear tracking zone of up to 12.7 mm (500 mils).
      • How to properly install and use 330851-02-000-070-10-00-05?
        Securely mount the probe to the machine bearing housing or a dedicated measurement bracket via its M30x2 threads.
      • What are the serious consequences if 330851-02-000-070-10-00-05 fails or breaks down?
        Failure of this DE probe blinds the safety system, leading either to accidental false trips costing over $500,000 USD/day in downtime, or catastrophic axial collisions that can physically destroy the entire multi-million-dollar turbine.
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