Bently Nevada 330101-29-50-10-02-05 3300 XL 8 mm Probe, 3/8-24 UNF Thread, Without Armor

Product Overview

The Bently Nevada 330101-29-50-10-02-05 is a 3300 XL 8 mm probe with a 3/8-24 UNF thread, supplied without armor. This eddy current probe is designed for reliable vibration and position measurement in rotating machinery. Its robust construction features a patented TipLoc molding method for a stronger bond between the probe tip and body, and a CableLoc design providing 330 N (75 lbf) pull strength. The 8 mm probe offers a thicker encapsulation of the probe coil in molded PPS plastic, resulting in enhanced ruggedness.

Technical Specifications Breakdown

Key parameters for the 330101-29-50-10-02-05 are listed below for quick reference:

Industry Applications

This probe is well-suited for critical rotating machinery such as turbines, compressors, and pumps. Its 2 mm linear range and high sensitivity (7.87 V/mm) enable precise radial vibration and thrust position monitoring. The CSA, ATEX, and IECEx approvals make it suitable for use in hazardous areas, including oil and gas, petrochemical, and power generation facilities. The robust stainless steel case and PPS tip withstand harsh conditions, reducing downtime and maintenance costs.

Installation & Setup Guidance

When installing the 330101-29-50-10-02-05, ensure proper thread engagement: the maximum length of thread engagement is 0.563 in for the 3/8-24 UNF thread. For standard forward mounted probes, the recommended torque is 11.2 N•m (100 in•lbf) for the case, and 7.5 N•m (66 in•lbf) for the first three threads. The recommended gap setting for radial vibration is -9 Vdc (approximately 1.27 mm or 50 mils). Use field wiring of 0.2 to 1.5 mm² (16 to 24 AWG), preferably 3-conductor shielded triad cable, with a maximum length of 305 meters (1,000 feet) between the Proximitor Sensor and the monitor.

Maintenance & Reliability

Inspect the probe and cable periodically for physical damage, especially at the connector and tip. The probe is designed to seal differential pressure between the tip and case using a Viton® O-ring; avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature failure of the pressure seal. The probe's relative humidity resistance is , with less than a 3% change in Average Scale Factor when tested in 93% humidity for up to 56 days. Regularly verify the incremental scale factor and deviation from best fit straight line to ensure measurement accuracy.

Compatibility & Integration

This probe is part of the 3300 XL series and is compatible with Bently Nevada 3300 XL Proximitor Sensors and extension cables. The miniature coaxial ClickLoc connector ensures secure and reliable signal transmission. The system can be configured for standard 5 or 1 meter systems (ISF ±5%) or standard 9 meter systems (ISF ±6.5%). The extended temperature range option is available for probe tips up to +218°C and cables up to +260°C.

Selection Guide & Purchasing Advice

When selecting the 330101-29-50-10-02-05, consider the required cable length, thread type, and agency approvals. For armored versions or different cable lengths, consult the Bently Nevada catalog. AutoDCSTech offers this probe with fast shipping and expert support. Please verify current lifecycle status and availability with AutoDCSTech before ordering.