Bently Nevada 330104-00-08-50-12-00 3300 XL 8 mm Proximity Probe, Metric

What Is the Bently Nevada 330104-00-08-50-12-00?

When unplanned downtime strikes rotating machinery, accurate vibration monitoring becomes critical. The Bently Nevada 330104-00-08-50-12-00 3300 XL 8 mm Proximity Probe delivers precise displacement measurements to help you detect shaft vibration and position changes early. This metric probe features an M10 x 1 thread, 80 mm overall case length, and a 5.0 meter cable with a miniature coaxial ClickLoc connector and FluidLoc cable. The probe tip is made of polyphenylene sulfide (PPS), and the case uses AISI 303 or 304 stainless steel. Designed for use with the 5 meter Proximitor sensor, it is an essential component for protecting turbines, compressors, and pumps.

Technical Specifications Breakdown

The 330104-00-08-50-12-00 offers a linear range of 2 mm (80 mils), starting at approximately 0.25 mm from the target and extending to 2.3 mm. The recommended gap setting for radial vibration is -9 Vdc, roughly 1.27 mm (50 mils). Nominal probe DC resistance is 8.73 ± 0.50 ohms for the 5.0 meter length. Operating temperature for the standard probe ranges from -52°C to +177°C, while the extended temperature range probe reaches up to +218°C for the tip and +260°C for the cable. The probe withstands 93% humidity with less than 3% change in Average Scale Factor (ASF) per IEC 68-2-3. These specs ensure reliable performance in harsh industrial environments.

Industry Applications

This proximity probe excels in monitoring radial vibration and axial position in critical rotating equipment such as steam turbines, centrifugal compressors, and large pumps. In a power generation plant, the 330104-00-08-50-12-00 helps operators detect early signs of shaft misalignment or bearing wear, enabling predictive maintenance and reducing costly unplanned outages. Its robust stainless steel case and PPS tip withstand high temperatures and corrosive conditions common in oil and gas applications.

Installation & Setup Guidance

Proper installation is key to accurate readings. Use field wiring of 0.2 to 1.5 mm² (16 to 24 AWG) with a three-conductor shielded triad cable. The maximum field wiring length between the Proximitor sensor and monitor is 305 meters (1,000 feet). Ensure the probe tip is clean and the target surface is smooth. For radial vibration, set the gap to achieve approximately -9 Vdc output. The maximum thread engagement length is 15 mm. Always verify the probe cable is not kinked or damaged during routing.

Compatibility & Integration

The 330104-00-08-50-12-00 is designed to work exclusively with the 5 meter Proximitor sensor. It supports intrinsically safe installations when used with zener barriers per drawing 141092 or galvanic isolators, achieving Class I, Zone 0 ratings. For non-incendive circuits, use drawing 140979 for Class I, Zone 2 installations. This flexibility allows integration into various safety and monitoring systems across different hazardous area classifications.

Selection Guide & Purchasing Advice

Before ordering, verify your system requires a 5.0 meter probe cable and M10 x 1 thread. The 330104-00-08-50-12-00 includes armor and a miniature coaxial ClickLoc connector with FluidLoc cable. If your application demands a different cable length or connector type, consult the full 3300 XL series options. For lifecycle status and current availability, please verify with plcmatrix.com before ordering. As a trusted supplier, plcmatrix.com offers this probe along with expert support to ensure you select the right component for your machinery protection system.