Environment temperature: -40~+70^oC

The values of working pressure tested under static pressure conditions should be within 1/3 to 3/4 of the upper limit of the pressure; and the values of working pressure tested undersurge pressure conditions should be within 1/3 to 2/3 of the upper limit of the pressure.

Relative humidity<80%.

The swings of vibration frequency under working models should be no more than 25Hz and no more than the medium vibration of 1mm.

Gauge must be installed vertical, forbid to tum the case by hand when installation and disassermbly.