Bently Nevada 330101-20-39-10-02-CN 3300 XL 8 mm Probe, 3/8-24 UNF Thread, Without Armor

Technical Specifications Breakdown

Key parameters for the 330101-20-39-10-02-CN are listed below for quick reference:

Industry Applications for Reliable Machine Protection

For example, in steam turbines and centrifugal compressors, the 330101-20-39-10-02-CN monitors shaft radial vibration and axial position. Its 2 mm linear range and precise 7.87 V/mm sensitivity allow operators to detect subtle changes in vibration signatures, enabling predictive maintenance before unplanned downtime occurs.

Installation and Setup Guidance

Proper installation is essential for accurate readings. Mount the probe using the 3/8-24 UNF thread into a rigid, non-ferrous bracket. Ensure the target surface is clean and has a minimum diameter of three times the probe tip. For radial vibration measurements, set the gap to -9 Vdc, approximately 1.27 mm (50 mils). Use field wiring of 0.2 to 1.5 mm² (16 to 24 AWG) with a 3-conductor shielded triad cable, keeping the length between the Proximitor Sensor and monitor under 305 meters (1,000 feet) to avoid signal roll-off.

Maintenance and Reliability

The probe's stainless steel case and PPS tip offer corrosion resistance and mechanical strength. The patented CableLoc design provides 330 N (75 lbf) pull strength, reducing the risk of cable damage. For extended temperature applications, the probe tip can withstand up to +218°C (+425°F). Regularly inspect the probe and cable for physical damage, and verify the gap voltage during scheduled maintenance. The probe is designed to seal differential pressure using a Viton O-ring; contact the custom design department if pressure testing is required.

Robust Vibration Monitoring with the Bently Nevada 3300 XL 8 mm Probe

Industrial rotating machinery demands precise and reliable vibration measurement to prevent catastrophic failures. The Bently Nevada 330101-20-39-10-02-CN, a 3300 XL 8 mm probe with 3/8-24 UNF thread and without armor, delivers the accuracy and durability needed for critical asset protection. This probe is designed for eddy-current displacement measurement, providing a linear range of 2 mm (80 mils) and an incremental scale factor of 7.87 V/mm (200 mV/mil) for standard 1 meter systems. Its patented TipLoc and CableLoc technologies enhance robustness, ensuring consistent performance in harsh environments.

Compatibility and Integration

This probe is part of the 3300 XL system, compatible with Bently Nevada Proximitor Sensors and monitoring systems. The miniature coaxial ClickLoc connector ensures a secure, quick connection with standard cable. The system supports field wiring up to 305 meters, allowing flexible placement of monitoring equipment. For optimal performance, use the recommended 3-conductor shielded triad cable to minimize electrical noise.

Selection Guide and Purchasing Advice

When selecting a vibration probe, consider the environmental conditions and required cable length. The 330101-20-39-10-02-CN offers a 1.0 meter cable with a ClickLoc connector, suitable for many standard installations. For applications requiring longer cables, explore other 3300 XL options. AutoDCSTech stocks this Bently Nevada probe and can assist with lifecycle status and availability. Contact our team to verify stock and ensure the correct part for your machinery.