330101-00-20-05-02-05 | Bently Nevada | 3300 XL 8 mm Proximity Probe

Configured for displacement measurement in rotating machinery, the Bently Nevada 330101-00-20-05-02-05 (330101-00-20-05-02-05 Proximity Probe) provides direct physical signal transduction for vibration and position monitoring.

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The 330101-00-20-05-02-05 transducer utilizes the eddy-current effect to generate a voltage output proportional to shaft displacement, with a standard scale factor of 7.87 V/mm. During system setup, gap voltage validation against the -10 VDC target midpoint is mandatory to ensure the transducer operates within its linear measurement range. Accurate gap adjustment is critical for observing rotor dynamics, such as shaft centerline positioning and orbital motion. Proper spacing must be maintained during installation to ensure cross-talk suppression and prevent signal interaction between adjacent proximity channels.

Frequently Asked Questions

Q: Can the 0.5 meter total system length be altered?

A: No. The 330101 series is factory-calibrated as a matched assembly comprising the probe, integral cable, and Proximitor sensor. Modifying the system length will disrupt the electrical impedance, leading to signal non-linearity and measurement errors.

Q: Is this probe compatible with standard Proximitor sensor electronics?

A: This probe is designed for use with Bently Nevada 3300 series Proximitor sensors. Ensure the Proximitor version is compatible with the probe’s electrical specifications and system length.

Field Installation Guidelines

• Mounting: Secure the probe in a rigid, non-conductive bracket. Verify that the probe tip is perpendicular to the target surface to ensure accurate displacement readings.
• Grounding: The probe housing is conductive; ensure the mounting bracket is properly bonded to the machinery ground to prevent electromagnetic interference (EMI).
• Connector Integrity: Use the ClickLoc connector mechanism for all coupling points. Ensure mating surfaces are clean and free of contamination before assembly.
• Cable Routing: Route coaxial cables through dedicated metallic conduit, maintaining physical separation from high-voltage AC lines to prevent induced noise on the output signal.