The Yokogawa TM21001045-2TN is a Temperature Input Module designed for use with Yokogawa's STARDOM FCN/FCJ series of network-based control systems.
This module acts as an interface between temperature sensors and the controller's main CPU. It is responsible for connecting to thermocouples (TCs) or resistance temperature detectors (RTDs), measuring their weak electrical signals, converting them into a precise digital value, and transmitting this data to the controller for monitoring and control purposes.