Product Overview

The 330850-90-CN is a specialized 25mm Proximitor sensor from Bently Nevada's 3300 XL series, engineered to provide advanced signal conditioning for large-scale displacement monitoring. This module acts as the sophisticated electronic core of a proximity transducer system, converting the eddy current signals from a 25mm probe into a linear voltage output. Specifically designed for applications requiring an extended linear range, this sensor is a critical component for Turbine Supervisory Instrumentation (TSI). Its high-grade construction ensures deterministic data acquisition, allowing for the precise tracking of mechanical motion in critical rotating assets where standard 8mm systems lack the necessary measurement depth.

Hardware Parameters and Engineering Specifications

• System Compatibility: 3300 XL 25 mm Proximity Transducer System

• Measurement Range: Designed for extended displacement up to 10 mm (approx. 400 mils)

• Input Power: Standard -24 Vdc supply with a 50mA maximum current draw

• Output Sensitivity: Precisely calibrated to 0.787 V/mm (20 mV/mil)

• Frequency Response: Capable of handling high-frequency data up to 50 kHz for rapid transient capture

• Environmental Sealing: IP67 rated for complete protection against dust and temporary immersion in industrial fluids

• Operating Temperature Range: -40°C to +85°C (-40°F to +185°F) for extreme industrial climates

• Construction Material: Corrosion-resistant housing with CN-specific regional certification compliance

• Signal Integrity: Advanced RFI/EMI shielding to prevent data distortion in electrically noisy motor rooms

Industrial Deployment and System Utilization

The 330850-90-CN Proximitor is the primary choice for monitoring large-bore rotating machinery, such as massive steam turbines, hydroelectric generators, and large-scale industrial process compressors. Because of the 25mm system's superior linear range, this sensor is ideally suited for monitoring differential expansion—tracking the relative movement between a machine's rotor and its casing during thermal startup cycles. It is also utilized for axial (thrust) position monitoring on heavy shafts where significant movement is expected. By delivering accurate, non-contacting measurement data to Bently Nevada 3500 series protection racks, the 330850-90-CN supports automated safety interlocks and sophisticated predictive maintenance programs, ensuring long-term operational reliability in the petrochemical and power generation sectors.