Bently Nevada 330101-02-12-10-02-00 3300 XL 8 mm Proximity Probe

Configured for non‑contact displacement measurement in 3300 XL transducer chains, the Bently Nevada 330101-02-12-10-02-00 (330101 proximity probe) provides direct eddy‑current sensing for rotor‑to‑probe gap monitoring. The probe integrates a 0.2 in unthreaded tip, a 1.2 in case, and a 1.0 m coaxial signal path terminated with a ClickLoc connector.

Suffix Breakdown & Model Matrix

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

• -02: Unthreaded length of 0.2 in.

• -12: Overall case length of 1.2 in.

• -10: Total cable length of 1.0 m (3.3 ft).

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

• -00: No agency approval required.

Hardware Specifications

Eddy-Current Probe Scaling and Gap Voltage Validation

The 3300 XL 8 mm probe conforms to the standard −10 VDC gap voltage target used across Bently Nevada proximity systems. This ensures linear displacement response when paired with the correct extension cable and Proximitor driver. The coaxial construction suppresses cross‑talk, maintaining clean rotor‑dynamic signatures even when routed through dense cable trays. 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 installed near high‑current conductors? A: It is not recommended. Electromagnetic fields may distort the sensing field and affect linearity.

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

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

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