330104-12-20-10-02-00 | Bently Nevada | 3300 XL 8 mm Proximity Probes

Bently Nevada 330104-12-20-10-02-00 3300 XL 8 mm Proximity Probes

The Bently Nevada 330104-12-20-10-02-00, also cataloged as the 330104 proximity probe, operates as a dedicated 8 mm eddy‑current sensing element for displacement and rotor‑dynamic measurement within 3300 XL monitoring systems. The probe implements a 120 mm unthreaded section, a 200 mm case length, and a 1.0 m coaxial lead terminated with a ClickLoc connector.

Suffix Breakdown & Model Matrix

• 330104: 8 mm proximity probe, extended‑length variant
• 12: Unthreaded length = 120 mm
• 20: Overall case length = 200 mm
• 10: Total cable length = 1.0 m (3.3 ft)
• 02: Miniature coaxial ClickLoc connector, standard cable
• 00: No agency approvals required

Hardware Specifications

Gap Voltage Validation and Eddy‑Current Scaling

3300 XL probes maintain a −10 VDC nominal gap‑voltage reference, enabling predictable displacement scaling across the 8 mm sensing range. The extended 120 mm unthreaded section and 200 mm case length provide mechanical reach for deep‑set installations while preserving probe‑to‑shaft geometry. The 1.0 m coaxial cable minimizes impedance variation, supporting stable rotor‑dynamic phase tracking. ClickLoc termination ensures repeatable electrical seating, reducing cross‑talk in multi‑probe arrays.

Frequently Asked Questions

Q: Can this probe be replaced while the proximitor remains energized? A: Replacement should only occur with the channel de‑energized to avoid transient gap‑voltage excursions.

Q: Does the 1.0 m cable length require proximitor recalibration? A: No recalibration is required; the cable length is factory‑matched for standard 3300 XL proximitor modules.

Q: Is the pressure seal verified before shipment? A: Probes are not pressure‑tested at the factory. The Viton O‑ring provides sealing, but pressure‑test requests require custom design support.

Field Installation Guidelines

• Ensure the mounting interface is clean and free of debris to maintain stable mechanical seating.
• Terminate cable shielding at the proximitor end only to prevent ground‑loop formation.
• Avoid sharp bends that may alter coaxial impedance.
• Route cable away from high‑current conductors to reduce electromagnetic interference.
• Verify ClickLoc connector engagement before energizing the monitoring channel.