Configured for non-contact vibration and position measurements in rotating machinery, the Bently Nevada 330103-07-12-10-02-00 (330103 8 mm Proximity Probe) provides direct physical/electrical execution of gap-to-voltage conversion within 3300 XL monitoring systems.

Suffix Breakdown & Configuration Matrix

The 330103 series is an 8 mm eddy-current proximity transducer featuring a 3/8-24 threaded case. The configuration is defined as:

• 07: Unthreaded length (0.7 inches).

• 12: Overall case length (1.2 inches).

• 10: Total cable length (1.0 meter).

• 02: Connector (Miniature coaxial ClickLoc, standard cable).

• 00: Agency approval (None).

Hardware Specifications

Machinery Monitoring & TSI Technical Attributes

The 330103 system utilizes an RF field generated by the 8.0 mm probe tip to determine shaft position. High-integrity monitoring requires gap voltage validation, targeting -10 VDC to maintain the 7.87 V/mm scale factor. The calibration is optimized for AISI 4140 steel targets; deviations from this material require specific offset compensation. To ensure rotor dynamics accuracy and signal fidelity, counterbore clearance must exceed 31.8 mm to facilitate effective cross-talk suppression and eliminate interference from neighboring machine structures.

Ordering info

• 1 x 330103-07-12-10-02-00 Proximity Probe

• 1 x 3/8-24 stainless steel locking nut

• 1 x Silicone connector boot set

Field Installation Guidelines

• Mechanical Torque:

  Apply a maximum of 13.5 N·m (120 in-lb) when securing the probe. Exceeding this torque can result in structural failure of the probe threads.

• Signal Shielding:

  Route coaxial cabling through grounded rigid metal conduits to mitigate electromagnetic noise and capacitive coupling.

• Connector Seating:

  The ClickLoc interface requires manual pressure until an audible click is detected; avoid using tools which may damage the connector.

• Thermal Management:

  Ensure the installation location does not exceed the +177 deg C rating to maintain internal component integrity.

Frequently Asked Questions

• Can the probe measure static and dynamic signals?

  Yes, the eddy-current design allows for the simultaneous measurement of static shaft position and dynamic vibration signals.

• Is the probe compatible with older 3300 8 mm systems?

  Yes, 3300 XL components maintain electrical and physical compatibility with previous 3300 8 mm transducer platform iterations.

• What happens if the gap voltage drifts outside the linear range?

  Drifting outside the typical -1 to -17 VDC range leads to signal clipping, causing inaccurate data output and potential monitor system errors.

• Does this probe require matching with the extension cable?

  The 3300 XL system supports component-level interchangeability, removing the requirement for site-specific system calibration.

• Is the connector waterproof?

  The ClickLoc connectors offer robust protection against environmental contaminants but are not intended for direct immersion in conductive fluids without shielding.

• Why is the target material restricted to AISI 4140 steel?

  Calibration sensitivity is tied to target permeability; using alternative metals alters the linear response, requiring specific site recalibration.

• Can this probe be used in hazardous locations?

  The suffix -00 indicates no hazardous area approvals. Always verify the site safety requirements before installation in explosive atmospheres.

• How is the probe gap verified?

  Verification is performed by measuring the DC gap voltage at the monitor or Proximitor interface relative to the center of the 2.0 mm linear range.