Bently Nevada 330104-01-08-50-01-05 3300 XL 8 mm Proximity Probe

Product Overview

When unplanned downtime threatens rotating machinery, the Bently Nevada 330104-01-08-50-01-05 3300 XL 8 mm Proximity Probe delivers precise shaft displacement and vibration measurements. This metric probe features an M10x1 thread, a 5.0 meter (16.4 feet) cable, and a polyphenylene sulfide (PPS) tip for reliable performance in harsh environments. Designed for use with the 5 meter Proximitor sensor only, it ensures accurate data for predictive maintenance programs.

Technical Specifications

The 330104-01-08-50-01-05 offers a linear range of 2 mm (80 mils), starting at approximately 0.25 mm (10 mils) from the target and extending to 2.3 mm (90 mils). The recommended gap setting for radial vibration is -9 Vdc, corresponding to about 1.27 mm (50 mils). Nominal probe DC resistance (RPROBE) measures 8.73 ± 0.50 ohms for the 5.0 m length. The probe case material is AISI 303 or 304 stainless steel (SST), with a maximum thread engagement of 15 mm. Operating and storage temperature range for the standard probe is -52°C to +177°C (-62°F to +350°F).

Industry Applications

This proximity probe excels in monitoring radial vibration and axial position of turbines, compressors, pumps, and motors. Its PPS tip withstands aggressive media, while the stainless steel case resists corrosion. The 5.0 m cable length suits installations where the sensor must be placed close to rotating shafts. With CSA, ATEX, and IECEx approvals, the 330104-01-08-50-01-05 meets safety requirements for hazardous area installations when used with appropriate barriers or isolators.

Installation and Setup Guidance

Mount the probe using the M10x1 thread, ensuring the unthreaded length of 10 mm is maintained. The overall case length is 80 mm. For field wiring, use 0.2 to 1.5 mm² (16 to 24 AWG) three-conductor shielded triad cable with tinned ends. Maximum field wiring length between the Proximitor sensor and monitor is 305 meters (1,000 feet). Set the initial gap to -9 Vdc for radial vibration measurements. The probe is designed to seal differential pressure between tip and case using a Viton O-ring; contact the custom design department if pressure testing is required.

Maintenance and Reliability

Inspect the probe cable and connector periodically for damage. The miniature coaxial ClickLoc connector with connector protector provides secure attachment. Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature pressure seal failure. The probe exhibits less than 3% change in Average Scale Factor (ASF) when tested in 93% humidity per IEC 68-2-3 for up to 56 days. 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).

Compatibility and Integration

The 330104-01-08-50-01-05 integrates with Bently Nevada monitoring systems using the 5 meter Proximitor sensor. For intrinsically safe installations, use zener barriers per drawing 141092 or galvanic isolators to achieve Class I, Zone 0 ratings (AEx/Ex ia IIC T5...T1 Ga). For non-incendive circuits per drawing 140979, it meets Class I, Zone 2 requirements (AEx/Ex nA IIC T5…T1 Gc). Always verify compatibility with your specific monitor and safety system.

Selection Guide and Purchasing Advice

Before ordering the 330104-01-08-50-01-05, confirm your required thread size (M10x1), cable length (5.0 m), and agency approvals (CSA, ATEX, IECEx). This probe is designed exclusively for use with the 5 meter Proximitor sensor. For current lifecycle status and availability, contact plcmatrix.com. As a trusted supplier of industrial automation components, plcmatrix.com offers new, surplus, and obsolete parts from Bently Nevada and other leading brands.