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

      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 330851-04-000-020-10-01-00 is a 3300 XL 25 mm proximity probe with a 2.0 in smooth side-exit case and a 1.0 m stainless-steel-armoured lead. It detects target displacement within a matched differential-expansion system.
      • Manufacturer part number
        330851-04-000-020-10-01-00
      • Shipping
        Swift global dispatch
      • Condition
        New, original product
      • Shipping size (est.)
        2.8cm x 7.3cm x 128cm
      • Country of Origin
        USA

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      What happens after you enquire

      • 0

        Review your reference

        Send the complete Bently Nevada 330851-04-000-020-10-01-00 reference, label photographs and required quantity.

      • 1

        Confirm the offer

        Review the offered 330851-04-000-020-10-01-00 configuration, condition and included items against your installed equipment.

      • 2

        Arrange dispatch

        Confirm the quantity of 330851-04-000-020-10-01-00, dispatch date, lead-time start and delivery details in the quotation.

      • Match the complete marking

        Compare the full Bently Nevada 330851-04-000-020-10-01-00 marking and selected configuration with the installed component before accepting a replacement.

      • Check the offered item before ordering

        Request clear label and connector photographs of Bently Nevada 330851-04-000-020-10-01-00. Ask your maintenance team to compare the offered unit with the installed equipment and the applicable Bently Nevada 3300 XL 25 mm Proximity Transducer System, 163236 Rev. M before ordering.

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

      • Manufacturer:
        Bently Nevada
      • Product Category:
        Machinery Monitoring Systems
      • Spare Part Number:
        330851-04-000-020-10-01-00
      • Weight:
        0.34 kg
      • Tariff Code:
        8537101190
      • Transducer family:
        3300 XL 25 mm
      • Case construction:
        Smooth, side exit
      • Case diameter:
        1.06 in
      • Overall case length:
        2.0 in
      • Total probe lead:
        1.0 m
      • Lead armour:
        Stainless steel
      • Probe resistance, centre to outer:
        6.2 ± 0.5 Ω
      • Probe tip / case material:
        PEEK / AISI 304 stainless steel
      • Cable impedance:
        75 Ω, triaxial
      • Nominal scale factor:
        0.787 V/mm
      • Nominal linear range:
        12.7 mm
      • Continuous probe temperature:
        -35 to +200 °C
      View as PDF Ask for Quote

      Information

      Overview Downloads Applications / Compatibility Product Precautions
      • Bently Nevada 330851-04-000-020-10-01-00 positions the sensing face in a smooth-case mounting while the lead leaves sideways. The longer body extends mechanical reach while keeping the side-exit connection accessible beside the mounting.
      Case geometry: 1.06 in diameter, 2.0 in overall length
      Cable arrangement: Side exit, 1.0 m lead with SST armour
      Matched response: 0.787 V/mm nominal scale factor
      The smooth case is 1.06 in in diameter and 2.0 in long, with a side-exit lead and zero unthreaded-length selection. It uses a clamp or adapter suitable for the smooth body instead of a threaded mounting hole. The PEEK sensing tip and AISI 304 stainless-steel case are combined with a 75 Ω triaxial FluidLoc lead and stainless-steel armour.

      The 1.0 m probe lead combines with a matching 4.0 m or 8.0 m extension cable and the corresponding 5 m or 9 m 3300 XL 25 mm Proximitor Sensor. Its isolated centre-to-outer-conductor resistance is 6.2 ± 0.5 Ω. Armour protects the cable mechanically but does not remove the need for proper support, connector protection or the 25.4 mm minimum bend radius.

      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 smooth-case retention, side-exit cable support, electrical matching and displacement checks.
      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 1.0 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 330851-04-000-020-10-01-00 for its configured installation using these checks.
      Preserve electrical length

      The 1 m probe lead combines with the appropriate 4 m or 8 m extension cable to form a 5 m or 9 m system using the matching 3300 XL 25 mm Proximitor Sensor.

      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.

      Secure the smooth case

      Use the correct clamp or adapter; do not transfer threaded-case torque values to this smooth body. 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

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

      Technical notes

      Electrical relationship: The 1 m probe lead combines with the appropriate 4 m or 8 m extension cable to form a 5 m or 9 m system using the matching 3300 XL 25 mm Proximitor Sensor. Disconnected probe resistance from center to outer conductor is 6.2 ± 0.5 Ω. Cable and conditioner selection must preserve the complete electrical length.

      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

      • What changes mechanically with the 020 case selection on 330851-04-000-020-10-01-00?
        It specifies a 2.0 in overall smooth case, 1.06 in in diameter, with side cable exit. It changes the mounting reach while retaining a 1.0 m total probe lead.
      • How should the mounting of 330851-04-000-020-10-01-00 accommodate its smooth body?
        Use the appropriate smooth-case support or probe adapter and verify that the case cannot slip during operation. Do not apply tightening values intended for threaded probe cases to a clamp of unknown design.
      • Is the armour on 330851-04-000-020-10-01-00 also an electrical shield specification?
        The selected armour is stainless steel with a protective outer covering. The electrical lead remains 75 Ω triaxial FluidLoc cable; armour protection does not replace the required connector and circuit arrangement.
      • Which gap is used as the reference point when checking a system with 330851-04-000-020-10-01-00?
        The reference calibration conditions use a 7 mm gap, -24 Vdc supply, 10 kΩ load and an AISI 4140 steel target. The complete installation must satisfy the applicable conditions before using the stated performance limits.
      • Can 330851-04-000-020-10-01-00 continuously tolerate the short-term 250 °C limit?
        No. Continuous probe operation is limited to -35 to +200 °C. Exposure up to +250 °C is a separate short-term limit of less than 24 hours.
      • How can two probes like 330851-04-000-020-10-01-00 increase the differential-expansion interval?
        An opposing-collar complementary arrangement can approximately double the measurement interval. It requires the intended two-channel geometry and monitor configuration; installing a second probe alone does not establish that function.
      • Why does a ramp installation using 330851-04-000-020-10-01-00 need radial-motion compensation?
        A ramp converts axial movement into a change of probe gap, but radial shaft motion also changes that gap. A second transducer in the appropriate arrangement compensates for radial movement, with additional geometry-related error to consider.
      • What limits the dynamic response of the measurement circuit using 330851-04-000-020-10-01-00?
        Typical matched-system response is 0–2.7 kHz at +0/-3 dB with up to 305 m of field wiring. Sensor-to-monitor wiring, load and the configured monitor must be considered together; this is not an isolated probe frequency rating.
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