The SITRANS FUE380 mains-powered (with backup battery) ultrasonic In-Line flow meter with a connection size of DN 300. Equipped with a display that shows measured values and diagnostics. Additionally, it features an optical IrDA interface for communication with SIMATIC PDM used for data transfer. Suitable for measuring volumetric flow and thermal energy of liquids, for use in operational transfer measurements in heating plants, local networks, boiler rooms, and cooling devices. For heat and cold measurement functions, it is necessary to connect the Siemens UC50-L (UC50-L-CHLAD) calorimetric counter.