OK... here is the problem:
I reset, get 101325 Pa and store it as my ref.
First read I get 101325, so my gauge is (101325 -101325) * 0.0101972 = 0
Second read I get 104978, then (104978 - 101325) *? 0.101972 = 372.5
Note the scale that I am talking about... expecting 1 or 2 digits and we are getting 3 digits to a small pressure difference.
Marcelo Varanda