High-Accuracy Signal Conditioning Module for Turbomachinery Protection Systems
The Bently Nevada 330878-91-05 3300 XL 50 mm Proximitor Sensor is a precision signal conditioning unit designed for use within the 3300 XL 50 mm eddy-current transducer system. It converts raw probe signals into stable, linear voltage outputs that represent shaft displacement, vibration, and differential expansion in large rotating machinery.
This model is widely applied in turbine supervisory instrumentation (TSI) systems where long-term measurement stability, high noise immunity, and accurate signal processing are essential. It is engineered for continuous industrial operation in harsh environments such as power plants, refineries, and heavy manufacturing facilities.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Proximitor® Sensor |
| Model Number | 330878-91-05 |
| System Series | 3300 XL 50 mm Transducer System |
| Function | Eddy-current probe signal conditioning |
| Input Type | 50 mm proximity probe signal |
| Output Signal | Linear analog voltage output |
| Sensitivity | ~0.394 V/mm (10 mV/mil typical system scale factor) |
| Power Requirement | Negative DC supply (system dependent) |
| Mounting Type | Panel / DIN rail mounting |
| Operating Temperature | -51°C to +100°C |
| Storage Temperature | -51°C to +105°C |
| Housing Material | Industrial-grade aluminum alloy |
| EMI Protection | High immunity to electromagnetic interference |
| System Compatibility | 3300 XL 50 mm probe + cable systems |
| Approximate Dimensions | 82 × 62 × 64 mm |
| Approximate Weight | ~0.2 kg |
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