Bently Nevada 330101-08-12-10-02-05 3300 XL 8 mm Proximity Probe

The Bently Nevada 330101-08-12-10-02-05, also cataloged as the 330101 proximity probe, operates as a dedicated eddy‑current displacement sensor for rotor‑to‑probe gap measurement within 3300 XL monitoring platforms. The probe assembly provides defined mechanical geometry, controlled coaxial impedance, and stable field behavior for vibration and shaft‑position acquisition.

Suffix Breakdown & Model Matrix

• 330101: Base model for the 3300 XL 8 mm proximity probe.

• -08: Unthreaded length of 8 mm.

• -12: Case length of 32 mm.

• -10: Total cable length of 1.0 m.

• -02: Miniature coaxial ClickLoc connector with standard cable.

• -05: Agency approval set 05 (no special certification required).

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics Behavior

The 3300 XL 8 mm probe follows the standard −10 VDC gap voltage scaling used across Bently Nevada proximity systems. This ensures linear displacement response when paired with matching extension cables and drivers. The coaxial construction suppresses cross‑talk, maintaining clean rotor dynamics signatures even in dense cable bundles. Mechanical tolerances of the probe tip and case preserve the eddy‑current field geometry, reducing drift caused by thermal cycling or mounting stress.

Frequently Asked Questions

Q: Must the probe be paired with a specific extension cable length? A: Yes. Eddy‑current probes require exact cable length matching to maintain correct −10 VDC gap voltage calibration.

Q: Can the probe be mounted near magnetic components? A: It should not be placed near strong magnetic fields, as these can distort the sensing field and affect linearity.

Q: Does the ClickLoc connector support repeated disconnect cycles? A: Yes. The connector is designed for secure engagement, but excessive cycling should be avoided to preserve coaxial integrity.

Field Installation Guidelines

• Maintain straight routing of the 1.0 m cable to avoid impedance variation.

• Align the probe tip perpendicular to the rotor surface for accurate displacement measurement.

• Avoid tight bends near the ClickLoc connector to maintain coaxial geometry.

• Ground shielding at the driver end only to prevent ground‑loop interference.

• Verify gap voltage during commissioning to confirm correct mechanical positioning.