Bently Nevada 330104-10-18-10-01-00 3300 XL 8 mm Proximity Probe

Solving Vibration Monitoring Challenges in Rotating Machinery

When unexpected shaft vibration threatens the reliability of critical rotating equipment, engineers need a sensor that delivers consistent, accurate data under harsh conditions. The Bently Nevada 330104-10-18-10-01-00, a 3300 XL 8 mm proximity probe, addresses this challenge directly. Designed for radial vibration and position measurement, this metric probe provides a linear range of 2 mm (80 mils) starting at approximately 0.25 mm (10 mils) from the target, with a recommended gap setting of -9 Vdc (about 1.27 mm). Its robust construction and proven performance make it a trusted choice for turbomachinery protection.

Technical Specifications Breakdown

The 330104-10-18-10-01-00 offers several key specifications that define its capabilities. The probe case thread is M10 x 1, with a maximum thread engagement of 15 mm. The unthreaded length is 100 mm, and the overall case length is 180 mm. Total length is 1.0 meter (3.3 feet), with a miniature coaxial ClickLoc connector and connector protector. The probe tip material is polyphenylene sulfide (PPS), and the case is AISI 303 or 304 stainless steel. Nominal DC resistance from center conductor to outer conductor is 7.59 ± 0.50 ohms. Operating and storage temperature range for the standard probe is -52°C to +177°C (-62°F to +350°F).

Real-World Applications

In industries such as power generation, oil and gas, and petrochemical processing, the 330104-10-18-10-01-00 monitors shaft vibration and position in steam turbines, compressors, and pumps. Its PPS tip withstands high temperatures and corrosive environments, while the stainless steel case resists mechanical wear. The probe's linear range and precise gap setting enable early detection of rotor instability or misalignment, helping operators schedule maintenance before catastrophic failure occurs.

Installation and Setup Guidance

Proper installation is critical for accurate measurements. The probe must be mounted with the M10 x 1 thread into a suitable mounting block or bracket, ensuring the tip is positioned within the linear range (0.25 to 2.3 mm from the target). Field wiring should use 0.2 to 1.5 mm² (16 to 24 AWG) three-conductor shielded triad cable, with a maximum length of 305 meters (1,000 feet) between the probe and monitor. Always verify the gap voltage setting of -9 Vdc for radial vibration applications. Refer to the frequency response graphs for signal rolloff at high frequencies when using longer cables.

Maintenance and Reliability

To maintain long-term reliability, inspect the probe cable and connector periodically for damage or wear. The probe is designed to seal differential pressure between tip and case using a Viton O-ring. Exposing the probe to temperatures below -34°C (-30°F) may cause premature failure of the pressure seal. The probe weight is 323 g/m (11.4 oz). 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 330104-10-18-10-01-00 integrates seamlessly with Bently Nevada 3300 XL Proximitor sensors and monitoring systems. When installed with intrinsically safe zener barriers or galvanic isolators per drawing 141092, it meets Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga requirements. For non-incendive circuits per drawing 140979, it qualifies for Class I, Zone 2: AEx/Ex nA IIC T5…T1 Gc. Always verify agency approval option 00 means no specific certification is required for this configuration.

Selection and Purchasing Advice

Before ordering, confirm that the 330104-10-18-10-01-00 matches your application requirements: probe length, thread size, and cable type. This model includes a miniature coaxial ClickLoc connector with connector protector and standard cable. If you need pressure testing or custom configurations, contact the custom design department. For current availability and lifecycle status, please verify with plcmatrix.com, a trusted supplier of industrial automation components. They offer new, surplus, and obsolete parts from leading brands like Bently Nevada.