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The Bently Nevada 330104-00-23-10-02-00, also cataloged as the 330104 Proximity Probe, operates as a dedicated hardware component for non-contacting displacement and vibration measurements within 3300 XL Proximity Transducer System platforms.

Suffix Breakdown & Model Matrix

  • 330104: Base model number for 3300 XL 8 mm proximity probe with M10 x 1 threads.
  • -00: Unthreaded Length Option (00 = 0 mm).
  • -23: Overall Case Length Option (23 = 230 mm).
  • -10: Total Length Option (10 = 1.0 metre / 3.3 feet).
  • -02: Connector and Cable Type Option (02 = Miniature coaxial ClickLoc connector with connector protector, standard cable).
  • -00: Agency Approval Option (00 = Not required).

Hardware Specifications

Parameter Specification
Model 330104-00-23-10-02-00
Brand Bently Nevada
Origin U.S.A.
Weight 0.323 kg nominal
Dimensions 8 mm probe tip diameter, 230 mm case length, 1.0 m total length
Operating Temp -51 deg C to +177 deg C
Power Consumption Consumes power from external Proximitor Sensor loop (-17.5 VDC to -26 VDC)
Linear Range 2.0 mm (80 mils) nominal
Scale Factor 7.87 V/mm (200 mV/mil) when paired with compatible 3300 XL Proximitor
Connector Type Miniature coaxial ClickLoc connector with connector protector
Cable Configuration Standard coaxial layout with integrated fluid barrier

Eddy-Current Probe Scaling and Gap Voltage Validation

The 330104-00-23-10-02-00 transducer acts via high-frequency eddy currents generated at the 8 mm tip to implement eddy-current probe scaling against a conductive shaft target. Accurate signal conversion necessitates a specific calibration curve matched to the material composition of the rotor dynamics target. During loop commissioning, field engineering requires rigorous gap voltage validation across the measuring path. Adjusting the probe's mechanical depth to register precise -10 VDC targets positions the hardware at the linear midpoint of its displacement range. This setting is required to isolate dynamic shaft movement while ensuring maximum cross-talk suppression between individual adjacent sensors monitoring the same machinery shaft.

Frequently Asked Questions

Q: How does a modification or extension of the 1.0 metre total probe length impact system accuracy?

A: The probe internal coil and cable length are tuned to match specific electrical parameters. Modifying the 1.0 metre physical line length or pairing it with an uncalibrated extension cable disrupts the total loop impedance, degrading the scale factor linearity and shifting the baseline gap voltage.

Q: What protection is provided by the miniature coaxial ClickLoc connector protector assembly?

A: The connector protector isolates the coaxial physical connection from external conductive paths and fluid tracking. This mechanism prevents the signal from grounding against metallic conduits or machinery casings, which would cause an absolute loss of the vibration output signal.

Field Installation Guidelines

  1. Mechanical Mount Setup: Insert the probe case into the threaded M10 x 1 mounting bore. Hand-rotate the assembly until the tip is near the target, ensuring no direct impact occurs with the shaft face.
  2. Electrical Voltage Adjustment: Connect a digital multimeter to the Proximitor sensor output terminals. Adjust the probe position within the threads until the recorded reading stabilizes at the standard -10 VDC target voltage.
  3. Locknut Mechanical Securing: Secure the probe case in place using the designated locknut. Verify the output voltage does not drift away from the -10 VDC specification during final torquing.
  4. Coaxial Routing Limitations: Route the standard cable through a dedicated, grounded metal conduit. Ensure the routing preserves a minimum static bend radius of 25.4 mm (1.0 inch) to prevent damage to the internal core shielding.

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