Having been in the refrigeration trade for some years I was wondering wether someone could tell me what is the correct way to measure subcooling? I can tell you what it is etc.. but to me there seems to be some confusion on where to measure and take temperature/pressure readings.
My point is
1. Do you take the Discharge pressure and liquid temperature or..
2. Do you take the liquid pressure and liquid temperature?

So can anybody clear this up for me?

Thanks in advance..