Bently Nevada 330104-05-10-10-02-05 Proximity Probes

Bently Nevada 330104-05-10-10-02-05 3300 XL 8 mm Proximity Probe

The Bently Nevada 330104-05-10-10-02-05, also cataloged as the 330104 proximity probe, serves as the primary 8 mm eddy‑current sensing element used to execute shaft‑vibration and rotor‑position measurements across 3300 XL monitoring platforms. This configuration implements a 5 mm unthreaded length, 100 mm case length, 1.0 m system length, a miniature coaxial ClickLoc connector, and hazardous‑area approvals.

Suffix Breakdown & Model Matrix

• 330104 — 3300 XL 8 mm proximity probe
• 05 — Unthreaded length = 5 mm
• 10 — Case length = 100 mm
• 10 — Total system length = 1.0 m
• 02 — Miniature coaxial ClickLoc connector
• 05 — Agency approvals (CSA, ATEX, IECEx)

Hardware Specifications

Eddy‑Current Scaling and Gap‑Voltage Validation

3300 XL probes operate on a standardized eddy‑current scaling curve, enabling consistent displacement interpretation across the 8 mm measurement range. The proximitor drives the probe toward a nominal −10 VDC gap‑voltage target, ensuring linear response and stable rotor‑dynamic tracking. The 5 mm unthreaded tip supports installations requiring shallow seating depth, while the 100 mm case length provides mechanical reach for compact bearing housings. The ClickLoc connector maintains coaxial shielding continuity, suppressing cross‑talk and micro‑motion noise in multi‑probe installations.

Frequently Asked Questions

Q: Can the probe be replaced while the proximitor is energized? A: No. Replacement should only occur with the channel de‑energized to avoid transient gap‑voltage excursions.

Q: Does modifying cable length affect calibration? A: Yes. System length is factory‑matched. Any non‑standard extension alters impedance and shifts the scaling curve.

Q: Is firmware required for probe compatibility? A: No. The probe contains no firmware. Compatibility is determined solely by proximitor and monitor configuration.

Field Installation Guidelines

Ensure the mounting bore is clean and burr‑free before seating the probe. Maintain proper standoff distance and verify gap voltage before commissioning. Route coaxial cable away from high‑current conductors to minimize induced noise. Bond shielding at the proximitor end only to prevent ground loops. Avoid sharp cable bends that may alter impedance. Confirm ClickLoc connector engagement before operation.