Yes thanks I have read that guide already.
I taped the probe for the thermo to your pulse 1 so they are reading from the same place.
Do I use the temp reading from the pulse to calculate the vpd offset?
Also should I adjust the thermo up till the pulse reads them temp the room should be?
There’s a minimum of 3 deg c between the 2.
I will make a cardboard shroud today that covers both the pulse and thermo probe to see if that makes a difference.
Iv worked off the temp display from the thermo for 10 or more years. So trying to get my head round that the thermo might have been reading temp wrong all this time or what’s going on.
Iv read your probe is one of the most accurate.
Let me know your thoughts please