The Yokogawa AAI841-H00/K4A00 is an analog input/output (I/O) module designed for industrial process control systems.

It acts as a bridge between field devices and a control system, allowing for both measurement and control functions.

• Analog I/O: This module has both input and output capabilities:

  • Input: It can receive analog signals from 8 field devices like pressure transmitters, temperature sensors, or flow meters, typically in the form of a 4-20 mA DC current loop. These signals represent process variables like pressure, temperature, or flow rate.
  • Output: It can send analog control signals to 8 field devices like valves or actuators, also using a 4-20 mA DC current loop. These control signals are generated by the control system based on process requirements.