Bently Nevada 330104-00-25-05-02-00 3300 XL 8 mm Proximity Probe

Product Overview

When machinery vibration threatens uptime, the Bently Nevada 330104-00-25-05-02-00 3300 XL 8 mm Proximity Probe delivers precise, reliable measurements. This metric probe features a polyphenylene sulfide (PPS) tip and a stainless steel case (AISI 303 or 304) for durability in demanding environments. Designed for forward mounting with an M10x1 thread, it integrates seamlessly into condition monitoring systems.

Technical Specifications

The probe offers a linear range of 2 mm (80 mils), starting at approximately 0.25 mm (10 mils) from the target. Recommended gap setting for radial vibration is -9 Vdc, corresponding to about 1.27 mm (50 mils). Nominal DC resistance (RPROBE) is 7.45 ± 0.50 Ω for the 0.5 m length. Operating temperature range for the standard probe is -52°C to +177°C (-62°F to +350°F). The probe case torque is rated at a maximum of 33.9 N·m (300 in·lbf), with a recommended value of 11.2 N·m (100 in·lbf).

Industry Applications

This proximity probe excels in rotating machinery monitoring, such as steam turbines, compressors, and pumps. Its robust construction withstands high temperatures and humidity, with less than 3% change in Average Scale Factor (ASF) when tested at 93% humidity per IEC 68-2-3 for up to 56 days. The 0.5 m (1.6 ft) cable with miniature coaxial ClickLoc connector simplifies installation and ensures signal integrity.

Installation Guidance

Mount the probe using the recommended torque of 11.2 N·m (100 in·lbf) to avoid damaging the threads. Use 3-conductor shielded triad cable with tinned field wiring, sized 0.2 to 1.5 mm² (16 to 24 AWG). Maximum field wiring length between the Proximitor Sensor and monitor is 305 meters (1,000 feet). For high-frequency applications, refer to frequency response graphs to account for signal roll-off.

Maintenance & Reliability

From a maintenance engineer's perspective, the 330104-00-25-05-02-00 offers easy serviceability. The Viton® O-ring seal maintains differential pressure between tip and case, but avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature seal failure. Inspect the cable and connector periodically for wear. The probe is designed for long-term stability in harsh conditions.

Compatibility & Integration

This probe works with Bently Nevada 3300 XL Proximitor Sensors and monitoring systems. When installed with intrinsically safe zener barriers (per drawing 141092) or galvanic isolators, it meets Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga; Class 1, Groups A, B, C, D; Class II, Groups E, F, G; Class III. For non-incendive circuits (per drawing 140979), it qualifies for Class I, Zone 2: AEx/Ex nA IIC T5…T1 Gc; Class 1, Division 2, Groups A, B, C, D.

Selection Guide & Purchasing Advice

Before ordering, verify the required unthreaded length, overall case length, and total length. The 330104-00-25-05-02-00 includes 0 mm unthreaded length, 250 mm case length, and 0.5 m total length. Please verify current lifecycle status and availability with plcmatrix.com before ordering. plcmatrix.com is a trusted supplier of industrial automation components, offering high-quality new, surplus, and obsolete parts from leading brands.