Bently Nevada 330104-01-14-10-01-05 3300 XL 8 mm Proximity Probe

The Bently Nevada 330104-01-14-10-01-05, also cataloged as the 330104 proximity probe, operates as a dedicated eddy‑current sensing element for rotor‑to‑probe displacement measurement within 3300 XL monitoring systems. The probe provides a 140 mm case length, a 1.0 m cable, and an armored construction for stable mechanical‑to‑electrical transduction in harsh environments.

Suffix Breakdown & Model Matrix

• 330104: Base model for the 3300 XL 8 mm proximity probe, metric thread.

• -01: M10 × 1 threaded case with stainless‑steel armor.

• -14: Overall case length of 140 mm.

• -10: Total cable length of 1.0 m.

• -01: Miniature coaxial ClickLoc connector.

• -05: Hazardous‑area approvals (CSA, ATEX, IECEx).

Hardware Specifications

Eddy-Current Probe Scaling and Gap Voltage Validation

The 3300 XL 8 mm probe follows the standard −10 VDC gap voltage scaling used across Bently Nevada proximity systems. This ensures predictable linear displacement response when paired with a matching extension cable and Proximitor driver. The armored jacket maintains coaxial geometry under mechanical stress, reducing drift caused by vibration or cable movement. The probe delivers a linear 7.87 V/mm (200 mV/mil) output through the Proximitor, supporting vibration, speed, and position measurements in rotor‑dynamic applications. Cross‑talk suppression is inherent to the coaxial design, preserving clean displacement signatures in dense cable trays.

Frequently Asked Questions

Q: Does the probe require exact cable matching for correct scaling? A: Yes. Eddy‑current probes must be paired with the specified cable length to maintain −10 VDC gap voltage calibration and linear displacement response.

Q: Can the armored cable be routed near high‑current conductors? A: It is not recommended. Although the armor improves robustness, electromagnetic fields may still distort the eddy‑current sensing field.

Q: Is the probe suitable for high‑temperature bearing housings? A: The armored 3300 XL probes are designed for harsh industrial environments, but installation must follow system‑level temperature guidelines.

Field Installation Guidelines

• Maintain straight routing of the 1.0 m armored cable to preserve coaxial impedance.

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