Product Overview

The 330980-70-CN is a high-precision 3300 XL NSv Proximitor Sensor designed by Bently Nevada for non-contacting displacement and vibration monitoring. As the primary signal conditioning unit for the Narrow Side View (NSv) transducer system, this device converts the raw radio frequency signal from a proximity probe into a linear voltage output. The "NSv" designation indicates that this system is specifically optimized for applications with restricted installation geometries, such as small shaft diameters or tight counterbore clearances where standard 8 mm probes would experience signal distortion.

Core Technical Characteristics

The 330980-70-CN Proximitor is engineered to provide stable, accurate data under rigorous industrial conditions:

• System Length: Configured for a 5.0-meter total system length (70 option), ensuring calibrated accuracy when paired with the correct probe and extension cable.

• Scale Factor: Delivers a standard average scale factor of 7.87 V/mm (200 mV/mil) for high-resolution measurement.

• Operating Temperature: Maintains reliable performance across an extreme range of -52°C to +177°C (-62°F to +351°F).

• Linear Range: Provides a consistent 1.5 mm (60 mils) linear range, suitable for most radial vibration and axial position applications.

• Electrical Stability: Features a nominal DC resistance of 0.220 ohms per meter of cable, ensuring signal integrity over the distance of the monitoring loop.

Application and Machinery Integration

This Proximitor Sensor is a critical component for Turbine Supervisory Instrumentation (TSI) and predictive maintenance programs:

• Restricted Space Monitoring: Specifically designed for use on centrifugal air compressors, process gas compressors, and refrigeration units where internal space is at a premium.

• Target Specificity: Ideal for monitoring shafts smaller than 51 mm (2.0 inches) or axial targets as small as 15 mm (0.6 inches).

• Radio Frequency Immunity: Built to resist electromagnetic interference (EMI), allowing for stable readings even in electrically noisy environments common in power generation and oil and gas facilities.

• System Compatibility: Designed for seamless integration with Bently Nevada 3500 Monitoring Systems and compatible 3300 NSv series probes.

Mechanical Specifications

• Weight: 0.24 kg

• Housing: Robust, corrosion-resistant packaging designed for DIN-rail or bulkhead mounting.

• Calibration: Factory calibrated to AISI 4140 steel targets.

• Origin: Manufactured in the USA to stringent quality standards.