Product Overview

The Bently Nevada 330101-00-28-20-02-05 is a high-precision 8mm eddy current proximity probe designed for the 3300 XL series. This transducer is a fundamental component for non-contacting displacement measurements, providing high-fidelity data on shaft movement. By generating a voltage signal directly proportional to the distance between the probe tip and a conductive target, it enables the precise monitoring of both static position (thrust) and dynamic motion (vibration).

As a critical part of Turbine Supervisory Instrumentation (TSI), this 3300 XL probe is specifically engineered for rotating assets utilizing fluid-film bearings. It is the industry standard for capturing radial vibration, axial displacement, Keyphasor phase reference, and rotational speed. Its advanced design ensures measurement accuracy in the most demanding industrial environments without the need for manual recalibration when swapping components.

Core Technical Characteristics

• Universal System Matching: Features the 3300 XL "universal match" architecture, allowing the probe to be interchanged with any 3300 XL extension cable and Proximitor sensor of the same system length without bench calibration.

• Superior Thermal Stability: Engineered to maintain high linearity and a stable scale factor across extreme temperature fluctuations, ensuring reliable data for machinery protection.

• Integrated Isolation Design: This configuration includes an integral isolation base, which provides electrical separation from the mounting surface and eliminates the requirement for additional isolator plates.

• API 670 Standard Compliance: Fully adheres to American Petroleum Institute (API) 670 requirements for mechanical design, linear range, and accuracy for machinery protection systems.

• Ruggedized Construction: Designed to withstand harsh industrial climates, the probe body and lead cable are resistant to oil, moisture, and chemical exposure common in power plants and refineries.

• Precision Calibration: Factory-calibrated for standard AISI 4140 steel targets, delivering a standard scale factor of 7.87 V/mm (200 mV/mil).

Technical Specifications

• Manufacturer: Bently Nevada (Baker Hughes)

• Model Number: 330101-00-28-20-02-05

• Product Series: 3300 XL 8 mm

• Transducer Type: Non-contact Eddy Current

• Linear Range: 2.0 mm (80 mils)

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

• Excitation Voltage: -24 Vdc

• Standard Target Material: AISI 4140 Steel

• Net Weight: 0.06 kg

• Dimensions: 1.2 cm x 15 cm x15 cm

• HS Code: 8537101190

• Origin: USA

Industrial Application Areas

• Power Generation: Radial shaft stability and axial thrust monitoring for steam and gas turbines.

• Oil & Gas: High-reliability protection for centrifugal compressors, expanders, and large pump sets.

• Heavy Industry: Rotational speed sensing and overspeed protection for large motor-driven units.

• Condition Monitoring: Supplying continuous data for Bently Nevada 3500 monitoring racks and System 1 software.