Description
The ABB AI835 is an analog input module used in industrial automation applications. It’s part of the ABB S800 I/O System, designed for modular and flexible signal acquisition in various control systems. The AI835 specifically handles thermocouple and mV measurements.
Key Features:
- 8 Differential Input Channels: Provides 8 independent channels for measuring voltage signals from thermocouples or other mV-range sensors.
- Thermocouple Types: Supports a wide range of thermocouple types, including B, C, E, J, K, N, R, S, and T.
- Linear Measurement: Also supports linear measurement of mV signals within a -30 mV to +75 mV range.
- High Accuracy: Offers high accuracy with a resolution of 0.1 µV and a total measurement error of 0.1%.
- Cold Junction Compensation: Automatically compensates for cold junction temperature to ensure accurate readings.
- Isolation: Provides electrical isolation between input channels and the system bus for protection against noise and ground faults.
Applications:
- Temperature Measurement: Monitoring temperatures in industrial processes, such as furnaces, ovens, and engines.
- Process Control: Measuring and controlling process variables like pressure, flow, and level.
- Data Acquisition: Collecting data from sensors for analysis and monitoring purposes.
- Machine Monitoring: Monitoring the health and performance of machinery.
Benefits:
- Versatility: Handles a wide range of thermocouple types and linear mV measurements.
- Accuracy: Provides precise and reliable signal acquisition.
- Isolation: Protects against noise and ground faults for enhanced system stability.
- Modularity: Fits into the S800 I/O system for flexible system configuration.
- Rugged Design: Built for harsh industrial environments with resistance to vibration, shock, and extreme temperatures.
Considerations:
- Thermocouple Type: Ensure the AI835 supports the specific thermocouple type used in the application.
- Measurement Range: Verify that the measurement range (-30 mV to +75 mV) is suitable for the sensor signals.
- Input Impedance: Consider the input impedance of the AI835 and its impact on sensor performance.
- System Compatibility: Ensure compatibility with the S800 I/O system and other connected components.
