kalorimetre
C5-ISF, Mechanical Heat Meter, M-Bus / wM-Bus + 3 Pulse, Installation: Return line, Application: Heating, Body: DN20 (¾”), Nominal Flow Qn: 2.5 m³/h, Connection Size: 1” Threaded, Body Length L: 130 mm, JUMO PT1000 Sensor, Germany MID, Class 3