Product Overview

The 330101-00-18-05-02-05 is a high-precision 8mm proximity probe belonging to the industry-standard Bently Nevada 3300 XL series. This transducer utilizes eddy current technology to perform non-contacting measurements of shaft vibration and axial position. Engineered for maximum reliability in Turbine Supervisory Instrumentation (TSI), it converts the physical gap between the probe tip and a conductive target into a highly accurate electronic signal. A hallmark of this system is its complete interchangeability; the probe is designed to work seamlessly with any 3300 XL extension cable and Proximitor sensor of the same system length without requiring field calibration or component matching.

Hardware Parameters and Technical Characteristics

The 330101-00-18-05-02-05 configuration is built to comply with API 670 standards, ensuring rugged performance in the harshest industrial environments.

• Model Number 330101-00-18-05-02-05

• Probe Diameter 8 mm

• Unthreaded Length 0.0 inches (Option -00)

• Overall Case Length 1.8 inches (Option -18)

• Total Length 0.5 meters (Option -05)

• Connector Type Miniature coaxial ClickLoc connector (Option -02)

• Agency Approval Multiple hazardous area certifications including ATEX, IECEx, and CSA (Option -05)

• Operating Temperature -51°C to +177°C (-60°F to +351°F)

• Linear Range 2.0 mm (80 mils), starting at approximately 0.25 mm (10 mils) from the probe tip

• Sensitivity 7.87 V/mm (200 mV/mil) when used with a compatible Proximitor

Industrial Applications and Operational Use Cases

This proximity probe is a fundamental component for protecting high-speed rotating machinery across power generation, oil and gas, and petrochemical sectors. Its primary applications include:

• Radial Vibration Monitoring Installed in pairs at $90^\circ$ offsets (X-Y configuration) to track shaft orbit and dynamic motion within fluid-film bearings.

• Axial Thrust Measurement Monitoring the longitudinal position of a rotor to prevent catastrophic contact between the turbine blades and the stator.

• Eccentricity and Phase Reference Serving as a Keyphasor to provide timing signals for vibration analysis and speed measurement.

• Predictive Maintenance Providing the raw data necessary for early fault detection in centrifugal compressors, steam turbines, and large-scale industrial pumps.

The 330101 series is specifically favored for its robust probe tip-to-cable bond and its resistance to chemical and oil exposure, ensuring long-term stability and reducing the risk of "Not OK" signal conditions in continuous monitoring environments.