The YOKOGAWA UM33A digital indicator (Model UM33A-020-11) is a panel-mounted process monitoring controller for temperature, pressure and liquid level measurement in marine and industrial systems. It accepts thermocouple, RTD and mV input signals, and features 4 independent relay alarm outputs for high/low limit alert. With a wide AC power supply range of 100–240VAC and operating temperature from -10°C to 50°C, it delivers stable data display and alarm control for engine rooms, boiler systems and tank monitoring onboard vessels.
