Description
1. Product Title
Bently Nevada 330980-71-CN – 3300 XL NSv Compact Proximitor Sensor for Narrow Installation Machinery Monitoring
2. Product Overview
The 330980-71-CN is a compact NSv type proximitor signal conditioner belonging to Bently Nevada’s 3300 XL non-contact eddy current transducer family, specially engineered for confined and limited mounting spaces where standard 8mm probe assemblies cannot be installed. It pairs exclusively with 3300 XL NSv miniature proximity probes and matched extension cables to complete impedance matching, high-frequency signal demodulation, amplification and linear correction for gap measurement signals. With a total system loop length configured at 7 meters and DIN rail mounting structure, 330980-71-CN converts tiny shaft displacement variations into standardized linear voltage outputs, feeding real-time data to rack vibration monitors, DCS and PLC safety interlock systems. Its reinforced anti-shock, wide-temperature enclosure and built-in EMI/RFI suppression circuits maintain measurement precision under high vibration, oil mist and electromagnetic interference, delivering reliable radial vibration, axial thrust position and Keyphasor speed pickup for small-diameter rotary equipment protection.
3. Technical Specifications
- Brand: Bently Nevada
- Model: 330980-71-CN
- Warranty: One Year
- Condition: 100% New & Original
- Series: 3300 XL NSv Miniature Proximity Transducer System
- System Total Loop Length: 7 meters (23 feet)
- Mounting Method: Standard DIN rail clip mounting
- Suffix Code Meaning: CN = China regional certification compliance
- Effective Linear Range: 1.5 mm (60 mils)
- Characteristic Impedance: 50 Ohm calibrated closed loop
- Power Supply: -17.5 VDC to -26 VDC negative DC power
- Output Signal: Linear proportional DC voltage signal
- Operating Temperature: -52°C ~ +100°C
- Storage Temperature: -52°C ~ +105°C
- Relative Humidity: Up to 100% non-condensing humidity tolerance
- Shock Resistance: 30g peak shock rating, 20g continuous vibration resistance
- Housing Material: Die-cast aluminum alloy, corrosion resistant
- Net Weight: 0.255 kg
- Compatible Probes: 3300 XL NSv narrow side-view proximity probes
- Wire Gauge Range: 0.2 mm² to 1.5 mm² field connection terminals
4. Application Scenarios
- Refrigeration & Process Compressor Units: Installed on small centrifugal compressors, screw compressors and air blowers with narrow housing clearance to monitor rotor radial vibration and axial thrust for machine trip protection.
- Small Turbine & High-Speed Rotary Equipment: Deployed on miniature turbo-expanders, small steam turbines and auxiliary high-speed fans where limited side-view installation space restricts standard proximity probe deployment.
- Industrial Package Power Skids: Used in compact modular power generation skids and offshore wellhead pumping assemblies, offering stable long-distance signal transmission in cramped cabinet layouts and corrosive field environments.
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