Bently Nevada 330703-000-050-10-12-00 Sensor Proximity Probe Cable

Bently Nevada 330703-000-050-10-12-00 Proximity Probe Cable

The Bently Nevada 330703-000-050-10-12-00, also cataloged as the 330703 proximity probe cable, operates as a dedicated coaxial link for 11 mm eddy‑current probe signals within 3300 XL transducer systems. The cable maintains factory‑matched impedance, a FluidLoc connector, and a 1.0 m length to preserve gap‑voltage scaling and displacement linearity.

Suffix Breakdown & Model Matrix

• 330703: 3300 XL 11 mm proximity probe cable
• 000: Unthreaded length = 0 mm (fully threaded probe interface)
• 050: Case length = 50 mm
• 10: Cable length = 1.0 m (39 in)
• 12: FluidLoc connector, standard non‑armored coaxial cable
• 00: No agency approvals

Hardware Specifications

Gap Voltage Validation and Eddy‑Current Scaling

The 330703 cable is factory‑matched to maintain the −10 VDC nominal gap‑voltage reference used across 3300 XL systems. Its coaxial geometry preserves impedance stability, ensuring accurate displacement scaling and rotor‑dynamic phase tracking. The FluidLoc connector provides repeatable electrical seating, reducing cross‑talk and maintaining channel coherence in multi‑probe installations.

Frequently Asked Questions

Q: Can the 330703 cable be replaced while the proximitor remains energized? A: Replacement should occur only with the channel de‑energized to avoid transient gap‑voltage excursions.

Q: Does cable length affect proximitor calibration? A: Yes. The 1.0 m length is factory‑matched; altering length or using extensions can change impedance and affect displacement scaling.

Q: Are firmware updates required when replacing this cable? A: No firmware resides in the cable. Configuration remains at the monitoring module.

Field Installation Guidelines

• 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 FluidLoc connector engagement before energizing the monitoring channel.
• Apply strain relief to prevent micro‑motion that may introduce noise.