Calculation and compensation units
Flowmeters provide measurement results according to their preset pressure and temperature values. In reality, however, the process values can be higher or lower than the set values, and it is the task of energy counters/compensation units to take care of the required corrections. Especially in the case of invoicing use, it is important to know the flow rate very precisely.
Assemblies ready for installation are available
A computing unit determines the values for volumetric and mass flow rate, as well as for energy. To achieve high accuracy, the variables depending on the pressure and temperature are being constantly corrected.
METRA ERW 700 is a MID-approved district heating flow rate and energy calculation unit.
The flow rate and temperature/temperatures are input into the calculation unit. The energy consumed is calculated based on these data.
The specific heat capacity of water/glycol mixture differs from that of water
In heating/cooling systems utilising water/glycol mixture, the specific heat capacity of the medium can be programmed. The specific heat capacity of a water/glycol mixture depends on the temperature and differs significantly from the specific heat capacity of water.
The ERW 700 energy computer can be programmed with the specific heat capacity of the medium, thereby ensuring the correctness of the energy calculation.
The meters are delivered panel-mounted or as wall mounting enclosures ready for installation.