Analog input can be connected to four 4-20mA temperature signal from outside. When calculating energy, T1 connects to inlet sensor and T2 to outlet sensor.
We have two methods to calculate energy.
Method 1：
Energy=Flow×Temp. Difference×heat capacity （Where：Temp. Difference refers to the temperature difference between Tin and Tout; heat capacity is in Menu 86, commonly it is -1.16309KWh/m3℃）
Method 2:
Energy = Flow×(thermal enthalpy at T1 temp.- thermal enthalpy at T2 temp.)
This thermal enthalpy is automatically calculated by heat meter according to international standard.
Post time: Feb-17-2023