Product Overview

The Bently Nevada 330709-000-070-50-02-00 is a high-precision 3300 XL 11 mm eddy-current proximity probe used for non-contact measurement of shaft vibration and relative displacement on fluid-film bearing machinery. The probe is part of the 3300 XL 11 mm Proximity Transducer System and is designed to work as a matched system with the correct 11 mm extension cable and Proximitor sensor to deliver stable, calibrated output for continuous condition monitoring.

The 11 mm probe format provides a longer usable measurement span than common 8 mm transducer systems, supporting demanding rotating equipment measurements such as axial position and differential expansion on steam turbines, plus rod-drop measurements on reciprocating compressors. For system upgrades, best practice is to replace the complete transducer set (probe, extension cable, and Proximitor) to maintain calibration integrity and system compatibility.

Key Technical Characteristics

Additional hardware notes (system-level)

• Designed for continuous vibration and position monitoring on fluid-film bearing machines

• Requires correct 11 mm system pairing (probe + extension cable + Proximitor sensor) for specified scaling

• Alternative target-material calibrations may be available for non-standard shaft materials

Industrial Applications

• Shaft vibration and radial displacement monitoring on turbines, compressors, pumps, and generators

• Axial position measurement on steam and gas turbines

• Differential expansion measurement for turbine casings/rotors (when configured as a matched system)

• Rod-drop measurement on reciprocating compressors

• Phase reference and speed-related duties when implemented in appropriate monitoring architectures (application-dependent)