Description
Woodward 8237-1246
Technical Specifications
- Part Number: 8237-1246
- Input Type: Analog (4-20 mA) or discrete
- Isolation: Channel-to-channel and channel-to-ground
- Safety Rating: SIL 3 capable
Functional Features
- Signal Conditioning: Filters noise and validates sensor signals before processing.
- Redundant Outputs: Provides dual isolated outputs to separate voting processors.
- Sensor Break Detection: Automatically detects open-circuit or short-circuit conditions.
Application Scenarios
Used for speed sensing, temperature monitoring, and pressure measurement in safety-critical turbine protection applications.
Performance Parameters
- Accuracy: ±0.1% of span.
- Common Mode Rejection: >100 dB.
Material Composition
Precision analog components with opto-isolation barriers and conformal-coated PCBs.
Structural Characteristics
- Form Factor: Standard ProTech-SX module width.
- Terminal Access: Front-access screw terminals for field wiring.
Working Principle
Conditions raw sensor signals, applies digital filtering, and converts them to standardized outputs. The module continuously monitors its own health and reports faults to the voting logic.
Installation Requirements
- Shielding: Use shielded cables for all analog inputs.
- Grounding: Ground shields at the module only to prevent ground loops.
Usage Precautions
- Sensor Compatibility: Verify sensor type and range matches module configuration.
- Calibration: Calibrate using traceable standards during commissioning.
