Description
Foxboro AD207AV
Technical Specifications
- Input Type: Multi-range analog input (mA, V, RTD, Thermocouple).
- System: Foxboro I/A Series DCS.
- Resolution: High-bit A/D conversion.
Functional Features
- Universal Input: Software-configurable to accept multiple sensor types without hardware changes.
- Cold Junction Compensation: Built-in CJC for accurate thermocouple measurements.
- Burnout Detection: Detects open sensor circuits and drives the signal to a predefined safe state.
Application Scenarios
Temperature and pressure monitoring in chemical reactors, boilers, and distillation columns.
Performance Parameters
- Accuracy: Exceptional precision with minimal temperature drift.
- Sampling Rate: Configurable to balance between noise filtering and response speed.
Material Composition
Precision resistors and reference voltage sources for long-term stability.
Structural Characteristics
- Dense Channel Layout: Maximizes I/O count per cabinet space.
- Thermal Management: Designed to dissipate heat efficiently in enclosed panels.
Working Principle
Field signals are conditioned, filtered, and converted to digital values by high-precision ADCs. The module applies linearization and scaling algorithms before transmitting the engineering unit values over the fieldbus.
Installation Requirements
- Use appropriate compensation wires for thermocouple inputs.
- Ensure RTD wires are of equal length and gauge for 3-wire configurations.
Usage Precautions
- Never apply voltage to a current input terminal.
- Verify the sensor type matches the software configuration to prevent false readings.
