The Yokogawa UT55A-020-11-00/DR is a Dual-Channel Signal Conditioner / Isolator designed to handle DC current/voltage input signals.
Its primary function is to accept two independent standard analog signals (e.g., from transmitters, sensors, or other control devices), provide electrical isolation between each input channel, and between the inputs and the outputs. It then converts and transmits each signal as a robust, standardized analog output signal to a PLC, DCS, or other control/monitoring system.
