Product Overview

The Bently Nevada 105839-02-12-05-02 is a precision-engineered 8mm reverse mount proximity probe, specifically designed for non-contact vibration and displacement monitoring. Integrated into the 3300 Proximity Transducer System, this probe is a primary sensing element for Turbine Supervisory Instrumentation (TSI). Its reverse-mount architecture is ideal for installation within specialized housings or internal bearing assemblies where traditional front-mount probes are physically restricted.

By converting the distance between the probe tip and a rotating shaft into a proportional voltage signal, the 105839-02-12-05-02 provides high-fidelity data on machinery health. This is essential for detecting early signs of mechanical failure, such as rotor imbalance, misalignment, or bearing degradation, ensuring the safe operation of high-value industrial assets.

Key Technical Characteristics

Built for long-term stability in extreme industrial climates, the 105839-02-12-05-02 offers superior measurement accuracy and physical durability.

• Linear Precision: Provides a standard system scale factor of 200 mV/mil (7.87 V/mm) ±10%, delivering the exact sensitivity required for advanced vibration diagnostics.

• Thermal Performance: Capable of continuous operation in temperature ranges from -40°C to +150°C (-40°F to +302°F), making it suitable for high-heat turbine decks and compressor casings.

• Non-Contact Eddy Current Technology: Monitors target surfaces without physical contact, eliminating friction and mechanical wear while ensuring a long service life.

• System Resilience: Optimized for use with Sealtite flexible conduits and explosion-proof junction boxes, protecting the delicate signal leads from moisture, oil splashes, and mechanical impact.

• Seamless Integration: Designed to work within the standard Bently Nevada monitoring ecosystem, reducing installation complexity and maintenance overhead during plant outages.

Technical Specifications

• Manufacturer: Bently Nevada (Baker Hughes)

• Model Designation: 105839-02-12-05-02

• Transducer Type: Reverse Mount Proximity Probe

• Probe Tip Diameter: 8 mm

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

• Operational Range: 5 mm sensing capability

• System Series: 3300 Proximity Transducer System

• Construction Material: High-grade engineering polymers and stainless steel

• Physical Mass: 0.06 kg

• Standard Compatibility: API 670 compliant for machinery protection

Industrial Applications

The 105839-02-12-05-02 is a standard component for predictive maintenance programs in the power generation, petrochemical, and oil and gas sectors. Its typical deployments include:

• Steam and gas turbine radial vibration monitoring

• Centrifugal compressor axial thrust position sensing

• High-speed pump shaft displacement tracking

• Industrial gearbox and fan bearing health monitoring