Bently Nevada 330101-00-53-10-02-00 Proximity Probe

The Bently Nevada 330101-00-53-10-02-00, also cataloged as the 330101 proximity probe, operates as a dedicated eddy-current sensor for shaft displacement and vibration monitoring within turbine supervisory instrumentation (TSI) systems.

Suffix Breakdown & Model Matrix

• 330101 → Base model, 3300 XL 8 mm proximity probe, 3/8‑24 UNF thread, no armor.

• 00 → Unthreaded length option, 0.0 inches.

• 53 → Overall case length, 5.3 inches.

• 10 → Cable length option, 1.0 meter (39 in).

• 02 → Connector type, miniature coaxial ClickLoc connector with protector.

• 00 → Agency approval option, standard configuration, no special approvals.

Hardware Specifications

Eddy-Current Probe Scaling

The probe is calibrated to a –10 VDC gap voltage target, ensuring accurate displacement conversion. This scaling supports rotor dynamics analysis and vibration monitoring. Cross-talk suppression within the 75‑ohm coaxial system maintains fidelity when multiple probes are installed in close proximity.

Frequently Asked Questions

Q: What is the linear measurement range of the probe? A: The probe supports a linear range of 2.0 mm (80 mils).

Q: How is accuracy maintained under thermal variation? A: The probe maintains ±0.025 mm (±1 mil) accuracy across its specified operating temperature range.

Q: What connector type is used? A: A miniature coaxial ClickLoc connector with protector is provided for secure attachment.

Field Installation Guidelines

• Install probe tip perpendicular to shaft surface for accurate displacement measurement.

• Adjust insertion depth to achieve –10 VDC gap reference.

• Route coaxial cable with shielding grounded at a single point to minimize interference.

• Avoid sharp bends in cable to prevent conductor fatigue.

• Verify driver calibration after installation to ensure proper scale factor alignment.