Bently Nevada 330103-00-04-10-01-00 3300 XL Proximity Probe

Configured for displacement measurement in rotating machinery, the Bently Nevada 330103-00-04-10-01-00 (330103-00-04-10-01-00 Proximity Probe) provides direct physical signal transduction for vibration and position monitoring.

Suffix Breakdown & Model Matrix

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The 330103-00-04-10-01-00 functions via the eddy-current principle, with the probe tip calibrated to a standard scale factor of 7.87 V/mm (200 mV/mil). Accurate gap voltage validation—targeting -10 VDC at the monitor—is mandatory during installation to ensure the sensor operates within its linear measurement range. Precise gap settings are necessary to observe rotor dynamics, including shaft centerline positioning and vibration magnitude. When installing multiple probes on a single bearing, proper spacing is required to ensure effective cross-talk suppression and prevent signal interference between adjacent sensor channels.

Frequently Asked Questions

Q: Can the 1.0 metre total length be modified in the field?

A: No. The 330103 system is factory-calibrated as a matched set (probe, extension cable, and Proximitor sensor). Modifying the cable length alters the electrical impedance and will introduce significant measurement errors.

Q: Is the probe tip pressure-sealed?

A: The probe contains a Viton O-ring seal designed to contain differential pressure at the probe tip. However, probes are not pressure-tested prior to shipment. Verification of the seal integrity is required if the installation point involves high-pressure fluid environments.

Field Installation Guidelines

• Mounting: Secure the probe in a rigid bracket to prevent mechanical resonance. Ensure the probe tip is perpendicular to the shaft surface.
• Grounding: Ensure the probe case is bonded to the machine housing. Use caution to avoid creating ground loops if the machine housing is at a different potential than the instrument common.
• Connector Integrity: Use the ClickLoc connector mechanism for all coupling points. Ensure mating surfaces are clean and free of debris to prevent signal attenuation.
• Cable Routing: Route the coaxial cable through dedicated metallic conduit, maintaining physical separation from high-voltage AC lines to minimize electromagnetic interference (EMI).