The diaphragm pressure gauge suitable for measuring with certain corrosive, non-condensing or non-crystalline variety of pressure or negative pressure of the fluid medium. The diaphragm pressure gauge corrosion resistance depends on the diaphragm material. 

 ◆ structural principle 
 The diaphragm pressure gauge measuring system (including flange joints, corrugated diaphragm) of transmission indication institutions (including the connecting rod, gear transmission, pointer and dial) and housing (including case and cover ring). The diaphragm pressure gauge casing is splash-proof structure, with good tightness, and it could protect their internal organs from the filthy immersion. 
 The role of the diaphragm pressure gauge principle is based on the diaphragm on the elastic component (measurement system) deformation. Diaphragm pressure gauge in the measured medium under pressure, forcing the diaphragm to generate the corresponding elastic deformation --- displacement, with the rod set by the transmission of the transmission and to enlarge, will be measured by the gear pointer by The value indicated on the dial. 
 ◆ The main technical instructions 
 Accuracy class: 2.5 
 Ambient temperature: -40 ~ +70 ° C; relative humidity less than 90% 
 Temperature effects: the use of temperature deviates from 20 ± 5 ℃, its additional temperature error is less than 0.04% / ℃ 
 Operating position: vertical installation. 
 Housing Protection grade: IP64 
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