1) It is advisable to use 1/3 to 2/3 of the full range of working pressure, and the maximum range of use shall not exceed 3/4 of the full scale.
2) The verification period generally does not exceed half a year. If the medium in the pressure measurement part fluctuates greatly, the use is frequent, the accuracy is required to be high, and the safety factors are strictly required, the verification period can be appropriately shortened according to the specific situation.
3) There should be no corrosive gas in the working environment.
