Product Overview

The Bently Nevada 330101-00-11-20-02-05 is a high-accuracy eddy current sensor designed for the 3300 XL series. This 8mm proximity probe is an essential component for non-contacting displacement monitoring, providing the primary signal for shaft vibration and axial position measurements. It operates by generating a voltage output directly proportional to the gap between the probe tip and the observed conductive surface, facilitating real-time machinery protection.

This specific configuration is engineered for compact mounting environments, featuring a 0.8-inch overall case length with no unthreaded portion. As part of a Turbine Supervisory Instrumentation (TSI) system, it is optimized for fluid-film bearing machines, including turbines, compressors, and pumps, where precise monitoring of mechanical tolerances is critical for operational safety and predictive maintenance.

Key Technical Characteristics

• Miniature Case Profile: Features an overall length of 0.8 inches with a 3/8-24 threaded body of 0.563 inches, allowing for installation in shallow ports or space-restricted internal housings.

• Extended Reach Lead: Includes a 2.0-meter (approximately 6.6 feet) integral cable, providing extra length for routing to terminal boxes without the immediate need for a separate extension cable junction.

• Universal Match Technology: Fully interchangeable with all 3300 XL extension cables and Proximitor sensors of the same system length, eliminating the requirement for manual recalibration or component matching.

• Global Hazardous Area Compliance: Holds CSA, ATEX, and IECEx certifications, making it safe for deployment in potentially explosive atmospheres common in oil, gas, and chemical processing.

• Secure Connectivity: Terminated with a gold-plated ClickLoc miniature coaxial connector, which provides a vibration-resistant locking mechanism that requires no specialized tools for field assembly.

• API 670 Standard Alignment: Specifically designed to meet American Petroleum Institute standards for mechanical configuration, linear range, and thermal stability in rotating machinery protection.

Technical Specifications

• Manufacturer: Bently Nevada (Baker Hughes)

• Model Number: 330101-00-11-20-02-05

• Product Series: 3300 XL 8mm

• Thread Size: 3/8-24 UNF

• Case Length: 0.8 in (Total) / 0.563 in (Threaded)

• Unthreaded Length: 0.0 in

• Lead Cable Length: 2.0 Meters (6.6 ft)

• Linear Range: 2.0 mm (80 mils)

• Standard Scale Factor: 7.87 V/mm (200 mV/mil)

• Operating Temperature: -51°C to +177°C

• Net Weight: 0.06 kg

• Origin: USA

Industrial Application Areas

• Turbo-Machinery Protection: Tracking radial vibration and axial thrust position in high-speed steam and gas turbines.

• Centrifugal Compressors: Reliable displacement sensing for rotor stability and bearing health.

• Phase Reference: Serving as a Keyphasor sensor to provide timing signals for vibration analysis and speed measurements.

• Plant-Wide Diagnostics: Providing high-fidelity analog signals to Bently Nevada 3500 series monitors and System 1 predictive maintenance platforms.