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      330851-02-000-050-90-00-CN

      3300 XL 25 mm Proximity Probe
      In Stock
      Ships by Tuesday, September 22
      Fast Shipping Available

      Product Describe：

      Bently Nevada 330851-02-000-050-90-00-CN is a 3300 XL 25 mm proximity probe with M30 x 2 threaded case, 50 mm case, 9.0 m total probe length and no armor. It supplies the noncontact eddy-current sensing input used for differential-expansion measurement on mid-size to large steam-turbine generators.

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      Technical specifications Information Technical notes FAQ

      Technical specifications for 330851-02-000-050-90-00-CN

      Technical specifications for 330851-02-000-050-90-00-CN

      • Manufacturer:
        Bently Nevada
      • Product Category:
        Machinery Monitoring System
      • Spare Part Number:
        330851-02-000-050-90-00-CN
      • Estimated shipping dimensions:
        23x23x4.5cm
      • Weight:
        0.62 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        USA
      • Probe case type:
        M30 x 2 threaded case
      • Mounting interface:
        M30 x 2
      • Unthreaded length:
        0 mm
      • Overall case length:
        50 mm
      • Total probe length:
        9.0 m
      • Armor option:
        No armor
      • Approval option:
        China country-specific ordering option
      • Probe tip material:
        PEEK
      • Probe case material:
        AISI 304 stainless steel
      • Probe cable:
        75 ohm triaxial PFA-insulated FluidLoc cable
      • Continuous probe temperature:
        -35 to +200 deg C
      • Short-term probe temperature:
        +250 deg C maximum for less than 24 hours
      • Minimum cable bend radius:
        25.4 mm (1.0 in)
      • Probe-case to lead tensile strength:
        330 N (75 lb)
      • Matched-system linear range:
        12.7 mm (500 mils)
      • Matched-system scale factor:
        0.787 V/mm (20 mV/mil) nominal
      • Matched-system frequency response:
        0 to 2.7 kHz, +0/-3 dB typical
      View as PDF Ask for Quote

      Information

      Information

      Overview Manuals Common Applications Product Precautions
      Bently Nevada 330851-02-000-050-90-00-CN provides the probe element for a matched 3300 XL 25 mm differential-expansion transducer loop.
      • Measures rotor-to-casing differential movement without mechanical contact
      • Uses sealed high-temperature construction for demanding turbine environments
      • Carries the eddy-current signal through a protected FluidLoc cable path
      • Supports controlled verification with the approved sliding-bracket arrangement

      The probe observes a turbine rotor collar or ramp and connects through its extension cable to the matched Proximitor Sensor. Commissioning confirms mechanical alignment, total system length, static gap and controlled movement response before the protection channel returns to service.

      Important Notice: Confirm Bently Nevada 330851-02-000-050-90-00-CN, case execution, bracket and probe adapter, collar or ramp target, probe alignment, lead and armor routing, ClickLoc connector, extension cable, 3300 XL 25 mm Proximitor Sensor, target material, static gap, wiring, shielding, grounding, monitor configuration and controlled differential-expansion test results before commissioning.

      Apter Power Bently Nevada 330851-02-000-050-90-00-CN Manuals and Guides

      The first document is the model-specific technical and system reference. The second is a distinct installation, connection and commissioning workbook with field checks and acceptance records.

      Steam-turbine differential expansion
      Tracks the difference between rotor growth and casing growth on mid-size to large turbine generators.
      Redundant collar observation
      Supports two probes observing the same collar face for redundant differential-expansion measurement.
      Complementary-input measurement
      Supports probes on opposite collar faces to extend the measurable differential-expansion range.
      Ramp-based compensated measurement
      Supports an engineered ramp arrangement with a second probe used to compensate for radial movement.
      Read the applicable Bently Nevada installation instructions before work. Verify 330851-02-000-050-90-00-CN, the installed host system and all configured field interfaces before isolation, wiring or commissioning.
      1
      Confirm the full Bently Nevada 330851-02-000-050-90-00-CN marking and the M30 x 2 threaded case, 50 mm case and 9.0 m probe execution before removal.
      2
      Place the steam-turbine generator and differential-expansion channel in the approved maintenance state.
      3
      Protect the PEEK probe tip, case interface, FluidLoc lead and ClickLoc connector from impact and contamination.
      4
      Record the collar or ramp geometry, probe alignment, bracket position, lead route and current static reading.
      5
      Route and support the lead without sharp bends, crushing, abrasion or tensile loading.
      6
      Match the probe, extension cable and 3300 XL 25 mm Proximitor Sensor to the engineered total system length.
      7
      Set the static gap within the documented linear region and confirm polarity and scale factor.
      8
      Simulate controlled collar movement and verify differential-expansion response, diagnostics and alarm action.

      Technical notes

      Technical notes

      Install 330851-02-000-050-90-00-CN in the documented collar or ramp arrangement and preserve probe alignment, case execution, lead route and connector protection. Match the extension cable and 3300 XL 25 mm Proximitor Sensor to the approved system length, then verify gap, polarity, scale factor and controlled differential-expansion response.

      FAQS

      • How is the 9.0 m lead execution of Bently Nevada 330851-02-000-050-90-00-CN matched to its Proximitor Sensor?
        Match the complete 330851-02-000-050-90-00-CN order number to a 3300 XL 25 mm extension cable and Proximitor Sensor that produce the approved total system length; do not reuse 7200-series transducer components.
      • What must be confirmed about the 50 mm M30 case before installing Bently Nevada 330851-02-000-050-90-00-CN?
        Confirm the M30 x 2 threaded mounting position, 50 mm overall case length, locknut or adapter condition, target geometry and perpendicular probe alignment before tightening the assembly.
      • How is the CN ordering suffix retained when identifying Bently Nevada 330851-02-000-050-90-00-CN?
        Retain the full order number including the CN country-specific ordering suffix in the work order, installed-equipment record and replacement verification; a visually similar standard execution is not the same article.
      • Which bend and tensile controls protect the long lead on Bently Nevada 330851-02-000-050-90-00-CN?
        Support the unarmored FluidLoc lead without crushing or pulling it, maintain at least the documented 25.4 mm bend radius and keep probe-case-to-lead tensile loading below 330 N.
      • How should a collar or ramp target be selected for Bently Nevada 330851-02-000-050-90-00-CN?
        Select the arrangement from the available target size, expected rotor axial movement and whether the machine provides a collar or ramp; use a same-side collar arrangement when sufficient collar height permits it.
      • What gap-voltage span is expected from the matched system using Bently Nevada 330851-02-000-050-90-00-CN?
        The matched 3300 XL 25 mm system has a 12.7 mm linear range, approximately -1.5 to -11.5 Vdc across that range, with a nominal scale factor of 0.787 V/mm.
      • How is radio-frequency immunity preserved in the Bently Nevada 330851-02-000-050-90-00-CN installation?
        Use the matched 3300 XL 25 mm Proximitor Sensor, preserve its approved DIN-rail or panel mounting and shielding arrangement, and route field wiring so nearby high-frequency radio sources do not couple into the measurement loop.
      • Which complementary-input test validates Bently Nevada 330851-02-000-050-90-00-CN?
        Move the approved sliding bracket through a controlled distance, confirm both probes remain aligned and perpendicular to the rotor, and compare polarity, gap voltage, scale factor, differential-expansion response and alarm action.
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      Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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