SMART MAIC D103/ 105

Hello,

We need to understand how the defrost mode is measured.
However, it's important to note that the D105 device calculates the temperature difference between T1 - T2, and this difference cannot be negative.
So, a new D105 kit and temperature sensors may be required for defrost mode.

    Thanks for the answer .

Is it possible to allow  the logic of D105 to generate pure mathematically   negative result ( negative COP) and draw e chart. In my case I need to generate negative result, that is  my point . I need the graph to continue when the T1 -T2 difference is negative. 

As mentioned earlier, you need another set of D105 + 2 temperature sensors, since the temperature difference T1 - T2 cannot be negative (it will be 0 if the difference T1 - T2 is negative).

You can use the same flow meter.

On the Dashboard, add a new COP to the graph and select * -1 in the Arithmetic Operation section.

In this case, the graph will continue, but in the negative zone.