Bently Nevada 330102-40-70-10-02-CN 3300 XL 8 mm Proximity Probe

Product Overview

The 330102-40-70-10-02-CN is a 3300 XL 8 mm proximity probe engineered for non-contact displacement measurements. Manufactured by Bently Nevada, it features a polyphenylene sulfide (PPS) probe tip and a 303 or 304 stainless steel case. This model includes a 1.0 meter standard cable with a miniature coaxial ClickLoc connector and is designed for country-specific agency approvals (CN). Its primary function is to detect shaft vibration and position in rotating machinery, helping prevent unplanned downtime.

Technical Specifications Breakdown

Key parameters for the 330102-40-70-10-02-CN are listed below for quick reference:

Industry Applications

This proximity probe is widely used in turbomachinery, compressors, and pumps where precise shaft clearance and vibration monitoring are critical. The 2 mm linear range and -9 Vdc recommended gap setting make it suitable for radial vibration measurements in high-speed rotating equipment. By integrating this probe into a condition monitoring system, operators can detect early signs of bearing wear or imbalance, reducing costly repairs.

Installation & Setup Guidance

When installing the 330102-40-70-10-02-CN, ensure the probe is threaded into a 3/8-24 UNF mounting hole. The maximum thread engagement is 0.563 in. Use field wiring of 0.2 to 1.5 mm² (16 to 24 AWG) with a three-conductor shielded triad cable. Maximum cable length between the Proximitor sensor and monitor is 305 meters (1,000 feet). For extended runs, refer to frequency response graphs for signal roll-off at high frequencies. The probe seals differential pressure between tip and case using a Viton O-ring; it is not pressure tested before shipment.

Maintenance & Reliability

Inspect the probe cable and connector periodically for damage. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature pressure seal failure. The probe is designed for less than 3% change in Average Scale Factor when tested at 93% humidity per IEC 68-2-3. For extended temperature applications, ensure the cable and connector do not exceed +260°C (+500°F).

The Evolution of Precision in Vibration Monitoring

Over the past decades, industrial machinery monitoring has shifted from reactive maintenance to predictive strategies. At the heart of this transformation are reliable proximity probes that deliver accurate, real-time data. The Bently Nevada 330102-40-70-10-02-CN, part of the 3300 XL series, exemplifies this evolution with robust design and proven performance.

Compatibility & Integration

This probe is designed for use with Bently Nevada 3300 XL Proximitor sensors. The 1.0 meter total length option is compatible with standard Proximitor sensors. Note that 3-meter probes are only available on 330101 models and require a 9-meter Proximitor; 5-meter probes require a 5-meter Proximitor. The miniature coaxial ClickLoc connector ensures secure, quick connections.

Selection Guide & Purchasing Advice

When selecting a proximity probe, verify the required unthreaded length, overall case length, and total length for your application. The 330102-40-70-10-02-CN offers a 4.0 in unthreaded length and 7.0 in case length with a 1.0 m cable. For country-specific certifications, the CN option is included. Please verify current lifecycle status and availability with AutoDCSTech before ordering. AutoDCSTech stocks genuine Bently Nevada parts to support your predictive maintenance programs.