Is the absolute pressure or relative pressure measured by an oil pressure meter or a barometer?
The relative pressure is also called table pressure. The pressure shown by the pressure meter is the gauge pressure (relative pressure), which is the difference between the real pressure and the atmospheric pressure somewhere in the equipment.
Are relative pressure, are relative to the 1 standard atmospheric pressure generated value, but the unit is different
Generally used for pressure gauge measurement equipment, pipeline and container on the device, whether the oil pressure gauge or pressure gauge, pressure is measured by the relative pressure is called working pressure, because the table inside and outside are under the atmospheric pressure, but is designed to measure the atmospheric pressure and gas pressure meter, it is absolute pressure test
