Bently Nevada 330101-00-24-05-02-00 3300 XL Proximity Probe

Product Overview

The Bently Nevada 330101-00-24-05-02-00 is a high-precision 8 mm eddy current proximity probe part of the 3300 XL series. This transducer is engineered for non-contacting displacement measurements in critical rotating machinery, providing essential data for vibration monitoring, radial position, and axial thrust analysis. It is compatible with 3300 XL Proximitor Sensors and is widely utilized in the monitoring of steam turbines, centrifugal compressors, and industrial pumps.

This specific configuration features a 3/8-24 UNF thread with a 2.4-inch overall case length and is supplied without stainless steel armor. The assembly includes a 0.5-metre (1.6 feet) integral cable terminated with a miniature coaxial ClickLoc connector. Designed to operate under extreme industrial conditions, the probe maintains a linear scale factor of 7.87 V/mm (200 mV/mil) when paired with the appropriate 3300 XL extension cable and Proximitor.

Technical Configuration

Ordering Information

Accurate identification of the probe configuration is essential for system compatibility. The part number 330101-00-24-05-02-00 is derived from the following option codes:

Engineering & Installation Guide

Calibration and Loop Length:

The 3300 XL 8 mm probe is a component of a tuned resonant circuit. This 0.5-metre probe must be used with a 4.5-metre or 8.5-metre extension cable to reach the required 5.0-metre or 9.0-metre total system length. Using a total length that deviates from the Proximitor's calibrated specification will result in an incorrect Scale Factor (SSF) and non-linear output.

Mechanical Installation:

When installing the 3/8-24 UNF probe through the machine casing, ensure the mounting bracket is rigid to avoid resonance. Tighten the probe to a maximum torque of 13.5 N·m (120 in·lb). Exceeding this limit can cause case distortion or damage to the internal sensing coil.

Gap Setting:

The probe should be gapped at the mechanical center of its linear range. For a 3300 XL system, the nominal mid-range gap is 1.27 mm (50 mils), which typically corresponds to a DC voltage output of -10.0 Vdc from the Proximitor sensor.

Connector Protection:

The ClickLoc connector (-02) is designed for secure coupling but remains sensitive to environmental contamination. For internal machine applications, the use of connector protectors or oil-resistant heat-shrink tubing is recommended to prevent moisture or lubricant ingress, which can lead to signal "spiking" or drift.

Troubleshooting FAQ

Q: Can I use this probe with a standard 3300 (non-XL) Proximitor?

A: While 3300 XL probes are physically compatible, the 3300 XL system has a different scale factor and temperature compensation profile. For maximum accuracy, it is recommended to use 3300 XL Proximitor sensors with 3300 XL probes.

Q: What indicates a faulty ClickLoc connection?

A: High-frequency noise or "spiking" in the vibration signal often indicates a loose or contaminated coaxial connection. Check the center pin for continuity and ensure the connector is dry.

Q: Is the 0.5m length sufficient for my installation?

A: The 0.5-metre probe is typically used when the connection to the extension cable occurs inside the machine or a nearby junction box. Ensure the total length (probe + extension cable) matches your specific Proximitor model.

Q: Does this probe require a safety barrier?

A: Since this model is "Not Required" (Option 00) for agency approvals, it does not carry intrinsic safety certifications. If the installation area is classified as hazardous, a probe with the appropriate approval code (e.g., -05 for multi-approvals) must be selected.