Bently Nevada 330104-12-20-10-01-00 3300 XL 8 mm Proximity Probe Metric

Product Overview

When reliable vibration and position monitoring is critical for rotating machinery, the Bently Nevada 330104-12-20-10-01-00 delivers precision measurement in demanding industrial environments. This 3300 XL 8 mm proximity probe, metric version, is designed for eddy current sensing of shaft displacement and vibration. Its armored construction and robust materials ensure long service life even in harsh conditions.

Technical Specifications

The 330104-12-20-10-01-00 features a polyphenylene sulfide (PPS) probe tip and an AISI 303 or 304 stainless steel case for durability. It offers a linear range of 2 mm (80 mils), starting at approximately 0.25 mm (10 mils) from the target, with a recommended gap setting for radial vibration of -9 Vdc (approximately 1.27 mm or 50 mils). The probe operates over a standard temperature range of -52°C to +177°C (-62°F to +350°F). Nominal DC resistance (RPROBE) from center conductor to outer conductor is 7.59 ± 0.50 ohms for the 1.0 m length. Maximum rated case torque is 33.9 N·m (300 in·lbf), with a recommended torque of 11.2 N·m (100 in·lbf). The probe case thread is M10x1 with a maximum thread engagement of 15 mm.

Industry Applications

This proximity probe is ideal for monitoring radial vibration and axial position in turbines, compressors, pumps, and motors. In a typical steam turbine installation, the 330104-12-20-10-01-00 provides accurate shaft displacement data to prevent catastrophic failures. Its armored cable and robust connector withstand the high-vibration environment common in power generation and oil & gas facilities.

Installation & Setup Guidance

Proper installation begins with verifying the unthreaded length of 120 mm and overall case length of 200 mm to ensure correct probe positioning. The total length option of 1.0 meter (3.3 feet) determines the cable run to the Proximitor sensor. Use 3-conductor shielded triad cable for field wiring, with conductor sizes from 0.2 to 1.5 mm² (16 to 24 AWG). Maximum field wiring length between the 3300 XL Proximitor sensor and the monitor is 305 meters (1,000 feet). Apply the recommended torque of 11.2 N·m (100 in·lbf) during mounting to avoid damaging the probe case. Set the initial gap to -9 Vdc for radial vibration measurements.

Maintenance & Reliability

The 3300 XL probe design includes a Viton O-ring to seal differential pressure between the probe tip and case. While probes are not pressure tested before shipment, regular inspection of the cable and connector for wear is recommended. The probe operates reliably in high humidity environments, with less than a 3% change in Average Scale Factor (ASF) when tested at 93% humidity per IEC standard 68-2-3 for up to 56 days. For extended temperature applications, the probe tip can withstand up to +218°C (+425°F).

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 with galvanic isolators, it is suitable for Class I, Zone 0 hazardous areas. For non-incendive circuits per drawing 140979, it meets Class I, Zone 2 requirements. The miniature coaxial ClickLoc connector provides secure, quick connections.

Selection Guide & Purchasing Advice

Before ordering, confirm that the 330104-12-20-10-01-00 matches your system requirements: unthreaded length 120 mm, overall case length 200 mm, total length 1.0 m, and connector type 01 (miniature coaxial ClickLoc with connector protector, standard cable). Agency approval option 00 indicates no certification is required. For current availability and lifecycle status, please contact plcmatrix.com. As a trusted supplier of industrial automation components, plcmatrix.com offers this Bently Nevada probe with expert support to ensure you select the right part for your application.