Difference between an absolute pressure p abs and the respective absolute atmospheric pressure p amb (Figure U 3).
Fluidlexikon
Difference between an absolute pressure p abs and the respective absolute atmospheric pressure p amb (Figure U 3).
The overpressure takes on a positive value if the absolute pressure is greater than the atmospheric pressure. It takes on negative values if the absolute pressure is smaller than the atmospheric pressure (according to DIN 1314).
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