Bently Nevada 330173-00-04-20-02-CN 3300 Series 5mm Proximity Probe

Description

To monitor shaft vibration and dynamic position in rotating machinery, the 330173-00-04-20-02-CN serves as a rugged, high-precision 5mm proximity probe. Part of the classic 3300 series eddy current measurement systems, this non-contacting transducer provides stable static (gap) and dynamic (vibration) voltage signals directly proportional to the distance between the probe tip and the observed conductive target. It interfaces seamlessly with matching extension cables and Proximitor sensors to deliver continuous shaft displacement data to diagnostic platforms and machinery protection systems.

The configuration of this specific model features a fully metric M8x1 threaded case with a 0.0 mm unthreaded section, a 40 mm overall case length, and a 2.0-meter overall cable length equipped with a standard ClickLoc coaxial connector. It is engineered to withstand demanding industrial environments, including exposure to lubricating oils, extreme temperatures, and high-frequency vibrations in critical turbomachinery installations.

Features

• Non-contacting eddy current design eliminates mechanical wear and measurement friction.
• Robust metric M8x1 threaded case design with high corrosion resistance.
• Miniature coaxial ClickLoc connector provides secure, vibration-resistant cable connections.
• Pre-calibrated compatibility with 3300 series proximity transducer systems.
• Resistant to chemicals, oils, and hostile process fluids common in industrial machinery casings.

Applications

• Radial shaft vibration monitoring in gas and steam turbines.
• Axial thrust position measurement in high-pressure centrifugal compressors.
• Dynamic shaft motion analysis in industrial pumps, generators, and gearboxes.
• General machinery protection and diagnostic monitoring in petrochemical, power generation, and water treatment facilities.

Technical Specifications

Connections and Interfaces

Installation Guidelines

• Mounting Torque: Avoid over-tightening during installation. Do not exceed the maximum recommended torque of 4.5 N-m (40 in-lb) for M8 threaded cases to prevent damage to the probe assembly.
• Clearance: Maintain proper side clearance around the probe tip (typically a minimum of 15 mm diameter of clear space) to prevent cross-talk and field interference from surrounding metal structures.
• Calibration Gap: Set the mechanical gap relative to the target using a digital voltmeter connected to the Proximitor sensor output, targeting the linear range center voltage.
• Cable Protection: Protect the flexible coaxial extension cable by routing it inside dedicated metal conduits or protective flexible armor to prevent mechanical pinching or electromagnetic interference.