abosulute pressure includes the atmospheric pressure while gage pressure gives the pressure above atmospheric pressure
gauge
Gauge pressure is what you get when you take the reading from your tire pressure gauge. Absolute pressure is the pressure inside your tires plus the atmospheric pressure, which is roughly; 14.7 psi, 101.3 kPa (kilo-Pascals), or one atmosphere. Absolute pressure measures all of the pressure on your tires, inside and out, whereas gauge simply measures the pressure inside the tire.
i need to explain what an absolute pressure gauge measures
Absolute Pressure
absolute pressure; gauge pressure; atmospheric pressure...
if the gauge pressure is 206 kPa, absolute pressure is 307 kPa
If a gas has a gage pressure of 156 kPa its absolute pressure is approximately?
44.7 psi
The gauge pressure would be 448.955kPa.
Absolute
Bourdon's tube pressure gauge cannot be used to measure negative pressure. This is because absolute pressure must be measured and the Bourdon gauge only indicates the gauge pressure.
-14.7psig is the gauge pressure of an absolute vacuum.