The selection of medical pressure gauges mainly includes instrument type, range, accuracy and sensitivity, overall dimensions, and whether remote transmission is needed and other functions, such as indication, recording, alarm, and control. The basis for selection is as follows:

(1) Must meet the requirements of the technological production process, including range and accuracy;

(2) The properties of the measured medium must be considered, such as temperature, pressure, viscosity, corrosiveness, flammability and explosive degree, etc.;

(3) Attention must be paid to the on-site environmental conditions when the instrument is installed and used, such as ambient temperature, electromagnetic field, and vibration.