Bently Nevada 330104-02-10-10-02-00 3300 XL 8 mm Proximity Probe

Introduction

When a critical turbine experiences unexpected vibration, unplanned downtime can cost thousands per minute. The Bently Nevada 330104-02-10-10-02-00 3300 XL 8 mm proximity probe provides precise, non-contact shaft displacement measurement to help you detect issues early. This metric probe, part of the trusted 3300 XL series, delivers the accuracy and durability needed for continuous protection of rotating machinery.

Technical Specifications

The 330104-02-10-10-02-00 features a polyphenylene sulfide (PPS) tip and an AISI 303 or 304 stainless steel case, ensuring robust performance in demanding conditions. Its M10 x 1 thread allows secure mounting, with a maximum thread engagement of 15 mm. The probe offers a linear range of 2 mm (80 mils), starting at approximately 0.25 mm (10 mils) from the target, and provides a recommended gap setting of -9 Vdc for radial vibration measurements. The nominal probe DC resistance is 7.59 ± 0.50 ohms for the 1.0 m length. Operating temperature range is -52°C to +177°C, with an extended range option for the probe tip up to +218°C and cable up to +260°C.

Industry Applications

This proximity probe excels in monitoring shaft vibration and position in steam turbines, compressors, pumps, and other rotating equipment. In a petrochemical plant, for example, the 330104-02-10-10-02-00 can be installed on a high-speed centrifugal compressor to provide early warning of bearing wear or imbalance. Its ability to operate from -52°C to +177°C makes it suitable for both cold climate and high-temperature process areas. The miniature coaxial ClickLoc connector simplifies field wiring, supporting cable runs up to 305 meters (1000 feet) to the monitoring system.

Installation Guidance

Proper mounting is critical for accurate readings. Ensure the probe tip is clean and the target surface is smooth and free of runout. Use the M10 x 1 thread with a maximum engagement of 15 mm to avoid bottoming out. Field wiring should use 0.2 to 1.5 mm² (16 to 24 AWG) three-conductor shielded triad cable with tinned ends. The recommended gap setting for radial vibration is -9 Vdc, corresponding to approximately 1.27 mm (50 mils) from the target. For best frequency response, keep field wiring length under 305 meters.

Maintenance and Reliability

Regularly inspect the probe cable and connector for damage, especially in high-vibration or corrosive environments. The probe is designed to seal differential pressure between tip and case using a Viton O-ring, but it is not pressure-tested before shipment. If your application requires a pressure seal test, contact the custom design department. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature failure of the pressure seal. In high-humidity conditions, the average scale factor changes less than 3% after 56 days at 93% humidity per IEC 68-2-3.

Selection and Purchasing Advice

Before ordering, verify that the 330104-02-10-10-02-00 matches your system requirements: confirm the unthreaded length (20 mm), overall case length (100 mm), total length (1.0 m), and connector type (miniature coaxial ClickLoc). This probe does not include agency approval options. For current availability and lifecycle status, contact plcmatrix.com, a trusted supplier of industrial automation components from Bently Nevada and other leading brands. Their team can help you find the right part for your application.