Bently Nevada 330101-00-40-05-02-00 3300 XL 8 mm Proximity Probe

Description

Fully threaded 3/8-24 UNF steel probe body (Option 00) with 4.0 in case (Option 40) and 0.5 m lead (Option 05) defines this 330101-00-40-05-02-00 configuration, an unarmored 3300 XL 8 mm proximity probe. The probe uses the eddy-current operating principle to perform non-contact shaft vibration and displacement measurements on rotating machinery. Because this variant is configured with an overall case length of 4.0 inches and has zero unthreaded length, it is fully threaded along the entire probe body to allow detailed adjustment of the probe gap within bearing housings or machine casings without requiring an unthreaded standoff.

Unlike armored variants or configurations designed for extremely harsh external exposures, this unit uses a standard unarmored coaxial cable measuring 0.5 meters (1.6 feet) in total length. It terminates in a miniature coaxial ClickLoc connector without a connector protector (Option 02) and is specified for installations where agency approvals are not required (Option 00). The system operates by pairing this probe with a matching 3300 XL Proximitor sensor and an extension cable to establish a complete 5-meter or 9-meter calibration path, making it suitable for monitoring steam and gas turbine shafts, pump rotors, and other critical industrial machinery.

Features

• Unthreaded length option 00 specifies a fully threaded 3/8-24 UNF-2A steel body.
• Overall case length option 40 provides a 4.0 in (101.6 mm) threaded case depth for versatile gapping.
• Total length option 05 delivers a 0.5 m (1.6 ft) standard coaxial probe lead.
• Connector option 02 specifies a miniature coaxial ClickLoc connector on standard unarmored cable.
• Operating temperature range from -52 degC to +177 degC (-62 degF to +350 degF) for both probe and cable.
• 8 mm tip diameter optimized for non-contact eddy-current displacement monitoring.

Applications

• Steam turbine shaft vibration and axial position measurement
• Gas turbine bearing housing rotor displacement tracking
• Centrifugal compressor and pump rotor dynamic monitoring
• Critical rotating machinery protection and condition monitoring

Ordering Information

Technical Specifications

Installation Guidelines

To establish successful measurements, mount the probe with the appropriate probe gap as per system calibration procedures (typically centered in the linear range at 1.27 mm or 50 mils). Route the coaxial lead cable with proper shielding and grounding practices to prevent electromagnetic interference from influencing the vibration monitoring signals. Ensure the minimum bend radius of the coaxial cable is respected during routing, and avoid over-tightening any cable ties or clamps.