Bently Nevada 330103-00-03-05-12-00 3300 XL 8 mm Proximity Probe

Product Overview

The Bently Nevada 330103-00-03-05-12-00 is a 3300 XL 8 mm proximity probe designed for non-contact displacement measurements. It features an M10 x 1 thread, a 0.5 meter (1.6 feet) total length, and a miniature coaxial ClickLoc connector with FluidLoc cable. The probe tip is made of polyphenylene sulfide (PPS), and the probe case is constructed from AISI 303 or 304 stainless steel (SST). This model is configured without armor and without agency approval options, making it suitable for standard industrial environments.

Technical Specifications Breakdown

Key parameters for the 330103-00-03-05-12-00 are listed below for quick reference:

Industry Applications

This proximity probe is widely used in turbomachinery monitoring, including steam turbines, compressors, and pumps. The 2 mm linear range and -9 Vdc recommended gap setting allow precise radial vibration and axial position measurements. In competitive comparison, the 3300 XL series offers proven reliability in harsh environments, with a standard temperature range of -52°C to +177°C that covers most industrial conditions. The PPS tip and SST case provide chemical resistance and mechanical durability.

Installation & Setup Guidance

When installing the 330103-00-03-05-12-00, ensure the probe tip is clean and the target surface is smooth and conductive. The maximum thread engagement for the M10 x 1 thread is 15 mm. Use field wiring of 0.2 to 1.5 mm² (16 to 24 AWG) with a 3-conductor shielded triad cable. The maximum length between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). For radial vibration applications, set the initial gap to approximately -9 Vdc (1.27 mm). Avoid exposing the probe to temperatures below -34°C (-30°F) to prevent premature pressure seal failure.

Maintenance & Reliability

Periodically inspect the probe cable and connector for damage, especially in high-vibration areas. 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. For applications requiring pressure seal verification, contact the custom design department. The probe relative humidity tolerance is less than a 3% change in Average Scale Factor (ASF) when tested at 93% humidity per IEC 68-2-3 for up to 56 days.

The Evolution of Precision Monitoring

Industrial machinery has evolved from reactive maintenance to predictive strategies, driven by reliable sensors that capture subtle changes in rotating equipment. The Bently Nevada 330103-00-03-05-12-00 represents a key component in this shift, offering engineers a proven solution for shaft vibration and position measurement. As plants demand higher uptime and tighter tolerances, the 3300 XL series has become a standard for critical asset protection.

Compatibility & Integration

This probe is part of the 3300 XL system and is compatible with 3300 XL Proximitor Sensors. When installed with intrinsically safe zener barriers per drawing 141092 or with galvanic isolators, it is rated Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga. For non-incendive installations per drawing 140979, it is rated Class I, Zone 2: AEx/Ex nA IIC T5…T1 Gc and AEx/Ex ec llC T5…T1 Gc. Always verify system compatibility before integration.

Selection Guide & Purchasing Advice

Choose the 330103-00-03-05-12-00 when you need a standard-length, non-armored probe with a ClickLoc connector for quick installation. For extended temperature ranges or armored configurations, consult alternative options. Please verify current lifecycle status and availability with AutoDCSTech before ordering. AutoDCSTech offers genuine Bently Nevada parts with expert support.

Troubleshooting & Common Issues

If the probe output is erratic, check the cable for cuts or kinks and ensure the connector is fully seated. Verify the target material and surface finish meet specifications. For signal rolloff at high frequencies with long field wiring, refer to frequency response graphs (Figures 10 and 12) in the manual. If the probe fails to reach the recommended gap voltage, inspect the mounting bracket for proper alignment.