Bently Nevada 330101-00-66-20-02-CN 3300 XL 8 mm Probe, 3/8-24 UNF Thread, Without Armor

Product Overview

For engineers tasked with protecting critical rotating machinery, the Bently Nevada 330101-00-66-20-02-CN offers a proven solution for accurate vibration and position measurement. This 3300 XL 8 mm probe is designed without armor, featuring a 3/8-24 UNF thread for straightforward installation. Its 2.0 meter cable terminates in a miniature coaxial ClickLoc connector, ensuring a secure and reliable signal path. The probe incorporates patented TipLoc and CableLoc designs, providing a robust bond between tip and body and a pull strength of 330 N (75 lbf). This makes it an choice for applications where physical abuse is a concern, such as in compressors, turbines, and pumps.

Technical Specifications Breakdown

Key parameters for the 330101-00-66-20-02-CN are listed below for quick reference:

Industry Applications

Vibration Monitoring in Turbomachinery

In steam turbines and gas turbines, the 330101-00-66-20-02-CN is used for measuring shaft radial vibration. Its 2 mm linear range and incremental scale factor of 7.87 V/mm (200 mV/mil) provide the precision needed for early fault detection, helping to prevent unplanned downtime.

Compressor Protection

For centrifugal and reciprocating compressors, this probe offers robust construction with a stainless steel case and PPS tip. The patented TipLoc and CableLoc designs enhance durability against mechanical stress, reducing the risk of probe failure in harsh environments.

Pump Monitoring

In large industrial pumps, the probe’s ability to operate from -52°C to +177°C (standard) ensures reliable performance across a wide temperature range. The miniature coaxial ClickLoc connector simplifies field wiring, saving installation time.

Installation & Setup Guidance

When installing the 330101-00-66-20-02-CN, ensure the probe case thread (3/8-24) is engaged to a maximum length of 0.563 in. For standard forward mounted probes, the recommended torque is 11.2 N•m (100 in•lbf) for the probe case, and 7.5 N•m (66 in•lbf) for the first three threads. Use field wiring of 0.2 to 1.5 mm² (16 to 24 AWG) with a 3 conductor shielded triad cable. The maximum length between the Proximitor Sensor and monitor is 305 meters (1,000 feet). Always verify the target material and surface finish per Bently Nevada guidelines.

Maintenance & Reliability

The 330101-00-66-20-02-CN is designed for long-term reliability. The probe sealing material consists of a Viton® O ring, which should be inspected periodically for integrity. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature failure of the pressure seal. The probe’s relative humidity tolerance is less than a 3% change in Average Scale Factor (ASF) when tested in 93% humidity per IEC standard 68 2 3 for up to 56 days. Regular calibration checks against the Incremental Scale Factor (ISF) of 7.87 V/mm ± 5% (for standard 5 or 1 meter systems) help maintain measurement accuracy.

Compatibility & Integration

This probe is designed for use with Bently Nevada 3300 XL Proximitor Sensors and compatible monitoring systems. The miniature coaxial ClickLoc connector ensures a secure connection with standard cable. For extended temperature range applications, the probe tip can operate up to +218°C (+425°F) and the cable up to +260°C (+500°F). The probe is not pressure tested prior to shipment; contact the custom design department if pressure seal testing is required.

Selection Guide & Purchasing Advice

When selecting a replacement or new probe, verify the thread size (3/8-24 UNF) and overall cable length (2.0 meters). For added protection against oil leakage, consider the optional FluidLoc cable option. Please verify current lifecycle status and availability with AutoDCSTech before ordering.