Pressure dial gauges are mainly used to measure the pressure of liquid, gas, vapour, and vacuum.
The working principle of the pressure gauge is based on the tube edge displacement caused by the elastic deformation of the Bourdon tube under the action of pressure or vacuum. The displacement will be amplified through a mechanical transmission mechanism and then transferred to an indication device, the pointer of which shows the measured pressure or vacuum value on a display with the measuring units on it.
The change of the verification should not exceed half the absolute value of the allowable error when the gauge cover is touched.
