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

      Proximity Probe
      Ships by Sunday, November 8
      Product image is representative; revision or series may vary. Contact us to request a specific version.

      Product Describe：

      Bently Nevada 330851-02-000-050-90-00-CN is a 3300 XL 25 mm proximity probe with an M30×2 threaded case and a 9.0 m unarmored lead. It senses target displacement within a matched differential-expansion transducer system.
      • Manufacturer part number
        330851-02-000-050-90-00-CN
      • Shipping
        Swift global dispatch
      • Condition
        New, original product
      • Shipping size (est.)
        23cm x 23cm x 4.5cm
      • Country of Origin
        USA

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      What happens after you enquire

      • 0

        Review your reference

        Send the complete Bently Nevada 330851-02-000-050-90-00-CN reference, label photographs and the required quantity.

      • 1

        Confirm the offer

        Compare the offered 330851-02-000-050-90-00-CN configuration, condition and included items with your installed equipment before accepting the quotation.

      • 2

        Arrange dispatch

        Confirm the quantity of 330851-02-000-050-90-00-CN, dispatch date, lead-time start and delivery details in the quotation.

      • Match the complete marking

        Compare the complete Bently Nevada 330851-02-000-050-90-00-CN marking, hardware configuration and connections with the installed item before approving a replacement.

      • Check the offered item before ordering

        Request clear label and connector photographs of Bently Nevada 330851-02-000-050-90-00-CN. Ask your maintenance team to compare the offered item with the installed equipment and the applicable Bently Nevada 3300 XL 25 mm Proximity Transducer System, 163236 Rev. M before ordering.

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

      • Manufacturer:
        Bently Nevada
      • Product Category:
        Machinery Monitoring Systems
      • Spare Part Number:
        330851-02-000-050-90-00-CN
      • Weight:
        0.62 kg
      • Tariff Code:
        8537101190
      • Transducer family:
        3300 XL 25 mm
      • Mounting thread:
        M30×2
      • Overall case length:
        50 mm
      • Unthreaded-length selection:
        0 mm
      • Total probe lead:
        9.0 m
      • Lead armor:
        None
      • Probe resistance, center to outer:
        8.8 ± 1.1 Ω
      • Probe tip / case material:
        PEEK / AISI 304 stainless steel
      • Cable construction:
        75 Ω triaxial, PFA-insulated FluidLoc
      • Matched-system scale factor:
        0.787 V/mm nominal
      • Matched-system linear range:
        12.7 mm under specified calibration conditions
      • Probe continuous temperature:
        -35 to +200 °C
      View as PDF Ask for Quote

      Information

      Overview Downloads Applications / Compatibility Product Precautions
      • Bently Nevada 330851-02-000-050-90-00-CN supports non-contact observation of rotor growth relative to the turbine casing. The long integral lead carries the probe signal to a remotely mounted conditioner without treating a short-lead extension arrangement as interchangeable.
      Case interface: M30×2 threaded construction
      Integral lead: 9.0 m unarmored FluidLoc cable
      Matched-system output: 0.787 V/mm nominal
      The M30×2 probe has a 50 mm overall case length, a zero unthreaded-length selection and a 9.0 m total lead. The selected 00 armor option uses an unarmored lead. PEEK forms the probe tip, AISI 304 stainless steel forms the case, and the 75 Ω triaxial FluidLoc cable uses PFA insulation.

      The 9 m probe lead must be treated as part of the corresponding 9 m calibrated system, not extended as though it were the 1 m version. Its disconnected center-to-outer-conductor resistance is 8.8 ± 1.1 Ω. The Proximitor Sensor provides the electrical excitation and conditioned output; the probe is not a stand-alone voltage transmitter.

      For the complete matched system, nominal sensitivity is 0.787 V/mm and the linear range is 12.7 mm. The reference conditions include a -24 Vdc supply, a 10 kΩ load, a Bently Nevada AISI 4140 steel target at least 61 mm in diameter, a 7 mm gap and component temperatures from 0 to +45 °C. Probe survivability to +200 °C does not make these reference accuracy conditions universal.
      Controller platform reference: 3300 XL 25 mm system. Match electrical length and target calibration.
      Original Bently Nevada pages explain the 25 mm sensing system, calibrated response, materials and applicable cable options. The separate installation guide covers long-lead integrity, connector protection and displacement verification.
      Original manufacturer pages retain their technical context. Use the Apter Power guide with the applicable manufacturer instructions and approved installation design.
      System and supply context: This 9.0 m probe is one component of the 3300 XL 25 mm transducer chain. The Proximitor Sensor, any required extension cable, brackets and monitor are separate unless itemized.

      Application scope: Differential-expansion performance depends on the collar or ramp geometry, target material and configured channel arrangement. Mechanical fit alone does not establish electrical or calibration compatibility.
      Prepare Bently Nevada 330851-02-000-050-90-00-CN for its configured installation using these checks.
      Preserve electrical length

      The 9 m probe lead must be treated as part of the corresponding 9 m calibrated system, not extended as though it were the 1 m version.

      Protect the connector

      Keep the high-temperature ClickLoc connector clean, finger tight and inside its connector protector.

      Check target geometry

      Use the intended collar or ramp surface and verify the target material against the calibration.

      Separate torque limits

      Do not apply probe-body tightening torque to the electrical connector; connector maximum is 0.565 N·m.

      Observe thermal boundaries

      Apply probe, cable and Proximitor Sensor temperature limits separately; avoid treating short-term exposure as continuous service.

      Verify motion response

      Test the complete channel through controlled relative movement before restoring the machine protection function.

      Alternative Names

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

      Technical notes

      Electrical relationship: The 9 m probe lead must be treated as part of the corresponding 9 m calibrated system, not extended as though it were the 1 m version. Its disconnected center-to-outer-conductor resistance is 8.8 ± 1.1 Ω. The Proximitor Sensor provides the electrical excitation and conditioned output; the probe is not a stand-alone voltage transmitter.

      Measurement boundary: For the complete matched system, nominal sensitivity is 0.787 V/mm and the linear range is 12.7 mm. The reference conditions include a -24 Vdc supply, a 10 kΩ load, a Bently Nevada AISI 4140 steel target at least 61 mm in diameter, a 7 mm gap and component temperatures from 0 to +45 °C. Probe survivability to +200 °C does not make these reference accuracy conditions universal.

      Technical reference: Bently Nevada 3300 XL 25 mm Proximity Transducer System, 163236 Rev. M.

      FAQ View All FAQ

      • Can the 9.0 m lead of 330851-02-000-050-90-00-CN be shortened to fit a smaller cabinet route?
        Do not shorten the calibrated lead or choose the sensor by available routing space. Preserve the 9 m electrical-length arrangement and use the corresponding 3300 XL 25 mm system configuration.
      • Which resistance value distinguishes the long-lead version of 330851-02-000-050-90-00-CN?
        The 9.0 m probe has a center-to-outer-conductor resistance of 8.8 ± 1.1 Ω. The 6.2 ± 0.5 Ω value belongs to a 1 m probe and is not the correct acceptance reference for this lead.
      • Does the 9 m lead on 330851-02-000-050-90-00-CN permit an extra 8 m extension cable?
        Not as a standard 9 m calibrated chain. The selected probe lead already has the 9 m total-length option. Additional extension changes the electrical length and must not be treated as a matching standard arrangement.
      • How should excess lead on 330851-02-000-050-90-00-CN be routed?
        Preserve the cable intact, support it away from abrasion and hot moving parts, and maintain at least the 25.4 mm minimum bend radius. Keep the connector protected and accessible for inspection.
      • Which part of the system containing 330851-02-000-050-90-00-CN receives the DC supply?
        Power is applied to the Proximitor Sensor, not directly to the passive probe lead. The sensor requires -17.5 to -26 Vdc without barriers or -23 to -26 Vdc with barriers, within the stated system conditions.
      • Why can a less negative supply reduce range with 330851-02-000-050-90-00-CN?
        Operating the Proximitor Sensor at a voltage more positive than -23.5 Vdc can reduce the linear range. Check the voltage at the sensor terminals under load instead of relying only on the nominal supply label.
      • Does the CN suffix change the measurement scale factor of 330851-02-000-050-90-00-CN?
        The country-specific approval selection does not define a different measurement scale factor. Use the matched 25 mm system value and confirm the actual approval markings and installation requirements separately.
      • How should a lead fault be separated from a target problem when checking 330851-02-000-050-90-00-CN?
        With the system isolated, inspect the lead and connector and compare the disconnected probe resistance with the 9 m value. Then verify target geometry and controlled displacement response with the correctly matched Proximitor Sensor.
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