The compulsory verification of process pressure gaugesincludes the following 7 categories:
a. Measurement of boiler main cylinder and feed water pressure parts;
b. Measurement of pressure of fixed air compressor air chamber and main pipe;
c. Measurement of generator and gas turbine oil pressure and locomotive pressure;
d. Pressure measurement of medical autoclaves and autoclaves;
e. Pressure measurement with alarm device;
f. Measurement of pressure of sealed pressurized container;
g. Pressure measurement of harmful, toxic, and corrosive media. (Such as: spring tube pressure gauge, electric remote transmission and electric contact pressure gauge).