330103-00-05-10-01-00 3300 XL 8 mm Proximity Probe | Bently Nevada

Configured for precision displacement sensing in machinery protection systems, the Bently Nevada 330103-00-05-10-01-00 (3300 XL 8 mm Proximity Probe) provides direct physical execution of non-contact eddy-current distance measurement.

Suffix Breakdown & Model Matrix

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The 3300 XL system relies on eddy-current probe scaling to translate the proximity of a metallic target, typically AISI 4140 steel, into a linear voltage signal. Accurate rotor dynamics analysis requires the probe to maintain a consistent gap, with a nominal operating distance of 1.27 mm (50 mils). During the setup process, gap voltage validation against -10 VDC targets must be performed at the Proximitor sensor output to ensure the transducer chain remains within its linear measurement range. Cross-talk suppression is achieved by observing physical spacing requirements between multiple probes installed in the same radial plane, minimizing interference between individual electromagnetic carrier signals.

Frequently Asked Questions

Q: Can the 1.0 meter integral cable be shortened during field installation?

A: No. The probe, cable, and connector assembly are factory-calibrated as a single matched system. Modification of the cable length alters system impedance and capacitance, which renders the factory calibration invalid and introduces measurement errors.

Q: What is the function of the Viton O-ring included in the probe assembly?

A: The Viton O-ring provides a seal against differential pressure between the probe tip and the machine case. Ensure the O-ring is seated correctly during installation to maintain the environmental integrity of the sensor mounting.

Field Installation Guidelines

• Mounting: Install the probe in a rigid, vibration-isolated bracket. Verify that the probe tip is perpendicular to the shaft target surface to prevent measurement non-linearity.
• Cable Routing: Route the coaxial cable through dedicated instrument conduit. Keep the cable run away from high-voltage AC power lines to prevent induced electromagnetic noise.
• Grounding: Ensure shield continuity from the probe to the monitor. The system must be grounded at the monitor terminal to avoid ground loops that degrade signal quality.
• Verification: Use a calibrated gap-setting tool to establish the initial distance, confirming the voltage output at the monitoring instrumentation before machine startup.