Product Overview

The Bently Nevada 330173-00-04-20-12-05 is a high-precision 5mm eddy current proximity probe designed for space-constrained machinery monitoring applications. As a fundamental component of the 3300 series transducer system, this probe provides non-contacting displacement measurements by generating a voltage signal directly proportional to the gap between the probe tip and a target conductive surface.

This 5mm variant is specifically engineered for installations where the standard 8mm probe is physically too large for the available mounting space. It is a critical element in Turbine Supervisory Instrumentation (TSI), used to track radial vibration and axial position on fluid-film bearing machines, as well as providing essential phase reference data via Keyphasor signals and rotational speed measurements.

Key Technical Characteristics

• Compact Form Factor: The 5mm tip diameter allows for installation in tight mechanical clearances while maintaining the high-performance standards of the 3300 XL series.

• Eddy Current Measurement: Utilizes electromagnetic field technology to capture both static displacement (position) and high-frequency dynamic motion (vibration) without physical contact.

• Thermal Stability: Engineered to deliver consistent and accurate measurement data across fluctuating temperature ranges, ensuring reliability in harsh industrial environments.

• Universal Component Match: Features full interchangeability within the 3300 series ecosystem, allowing probes, extension cables, and Proximitor sensors to be replaced without requiring manual bench calibration.

• Predictive Maintenance Integration: Supplies high-fidelity analog data compatible with Bently Nevada 3500 monitoring racks and System 1 condition monitoring software for early fault detection.

• Durable Construction: Built with robust materials to resist mechanical stress and chemical exposure common in power generation and petrochemical facilities.

Technical Specifications

• Manufacturer: Bently Nevada (Baker Hughes)

• Model Number: 330173-00-04-20-12-05

• Product Series: 3300 5mm / 3300 System

• Probe Tip Diameter: 5 mm

• Measurement Type: Non-contact Eddy Current

• Target Material: AISI 4140 Steel (Standard)

• Linear Range: 2.0 mm (80 mils)

• Frequency Response: 0 Hz (DC) to 10 kHz

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

• Net Weight: 0.06 kg

• Dimentions:1.2 cm x 15 cm x15 cm

• Origin: USA

• HS Code: 8537101190

Industrial Application Areas

• Small Bore Machinery: Vibration monitoring on assets with limited probe mounting access or small shaft diameters.

• Turbine Supervisory Instrumentation: Tracking rotor expansion and radial shaft stability in steam and gas turbines.

• Centrifugal Compressors: Continuous axial position sensing to prevent thrust bearing failure.

• Speed Sensing: High-accuracy rotational speed detection and phase timing for overspeed protection systems.