Product Overview

The Bently Nevada 330101-00-50-20-02-05 is an eddy-current proximity probe from the 3300 XL 8 mm transducer family. It is used for non-contact displacement measurement between the probe tip and a rotating shaft or other metallic target. When combined with a matched Proximitor sensor (and extension cable if required by the system design), the probe provides continuous signals for radial vibration and/or axial position monitoring in machinery protection and condition monitoring systems.

This probe configuration is commonly selected for installations that require stable measurement performance in industrial environments, supporting early identification of mechanical issues such as rotor unbalance, misalignment, rub conditions, and bearing wear.

Hardware Parameters

• Model / Order Code: 330101-00-50-20-02-05

• Product Series: 3300 XL 8 mm Proximity Transducer System

• Product Type: Eddy-current proximity probe

• Measurement: Shaft displacement for vibration and/or position (application dependent)

• Probe Tip Diameter: 8 mm (family characteristic)

• Mounting Thread: 3/8-24 UNF (typical for this probe family)

• Unthreaded Length: 0.0 in (Option 00)

• Case Length: Option 50 (long case configuration, per ordering code)

• Cable Length: Option 20 (integral cable length per ordering code)

• Connector: Miniature coaxial ClickLoc with connector protector (Option 02)

• Approvals: Multi-agency option package (Option 05, application dependent)

• Operating Temperature: -51°C to +177°C (typical 3300 XL specification range)

Industrial Applications

Typical operational deployments include:

• Steam and gas turbines for bearing vibration monitoring and rotor dynamic observation

• Centrifugal compressors where continuous displacement data supports protection logic and reliability programs

• Large pumps and motor-driven trains where shaft motion trends indicate bearing or hydraulic issues

• Gear-driven equipment and high-speed rotating assets requiring stable non-contact measurement

• Retrofit and spares where maintaining compatibility with 3300 XL 8 mm systems is required

Operational considerations

• Verify mechanical installation dimensions for the selected case length option before installation

• Confirm cable routing and connector engagement to prevent intermittent readings

• Perform channel verification at the monitor/controller to ensure consistent “OK” status and correct scaling