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      330851-04-000-020-10-01-00

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

      Product Describe：

      Bently Nevada 330851-04-000-020-10-01-00 is a 3300 XL 25 mm proximity probe with 1.06 in smooth side-exit case, 2.0 in case, 1.0 m total probe length and stainless-steel 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 330851-04-000-020-10-01-00

      Technical specifications for 330851-04-000-020-10-01-00

      • Manufacturer:
        Bently Nevada
      • Product Category:
        Machinery Monitoring System
      • Spare Part Number:
        330851-04-000-020-10-01-00
      • Estimated shipping dimensions:
        2.8x7.3x128cm
      • Weight:
        0.34 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        USA
      • Probe case type:
        1.06 in smooth side-exit case
      • Mounting interface:
        Smooth side exit
      • Unthreaded length:
        0.0 in
      • Overall case length:
        2.0 in
      • Total probe length:
        1.0 m
      • Armor option:
        Stainless-steel armor
      • Approval option:
        No approvals
      • 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 330851-04-000-020-10-01-00 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 330851-04-000-020-10-01-00, 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 330851-04-000-020-10-01-00 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 330851-04-000-020-10-01-00, the installed host system and all configured field interfaces before isolation, wiring or commissioning.
      1
      Confirm the full Bently Nevada 330851-04-000-020-10-01-00 marking and the 1.06 in smooth side-exit case, 2.0 in case and 1.0 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 330851-04-000-020-10-01-00 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

      • What confirms the 2.0 in smooth side-exit execution of Bently Nevada 330851-04-000-020-10-01-00?
        Confirm the complete order number, 1.06 in smooth side-exit case, 2.0 in overall case length, 1.0 m armored lead and no-approval suffix before disturbing the installed assembly.
      • How is an armored Bently Nevada 330851-04-000-020-10-01-00 aligned without loading the probe case?
        Secure the smooth case in the approved adapter, align the sensing face perpendicular to the target and support the stainless-steel armor separately so it cannot twist or side-load the probe.
      • Which connector-protector steps prevent contamination of Bently Nevada 330851-04-000-020-10-01-00?
        Keep the high-temperature ClickLoc interfaces capped during routing, use the protector installation tool where applicable and mate only clean, dry and undamaged connector surfaces.
      • How does the no-approval suffix affect identification of Bently Nevada 330851-04-000-020-10-01-00?
        Treat the no-approval suffix as part of the exact catalog identity and do not substitute a differently approved execution without a documented engineering and area-classification review.
      • What turbine-casing clearances are checked before routing Bently Nevada 330851-04-000-020-10-01-00?
        Check clearance for the 2.0 in side-exit case, bracket travel, armor support and cable bends throughout the expected machine movement so no component rubs the casing or rotor structure.
      • How is a complementary differential-expansion pair gapped when it includes Bently Nevada 330851-04-000-020-10-01-00?
        Set both probes in the documented opposite-side collar arrangement, preserve complementary polarity and use the sliding bracket to establish gaps that cover the required combined differential-expansion travel.
      • Which output and linearity observations verify the matched loop for Bently Nevada 330851-04-000-020-10-01-00?
        With the matched 3300 XL 25 mm extension cable and Proximitor Sensor, verify the nominal 0.787 V/mm scale factor, the 12.7 mm linear range and a smooth response without diagnostic instability.
      • What final documentation closes maintenance on Bently Nevada 330851-04-000-020-10-01-00?
        Record the full article identity, case and armor condition, final bracket position, gap voltage, controlled movement response, monitor diagnostics, alarm test and restored grounding and shielding.
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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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