The indicator value of gas gauge is influenced by the large variation of gas source pressure. Compressed air source is an important power source for detecting the gas momentum meter, and the normal gas source pressure should be at0.4～0.7MPaIf the gas source pressure is unstable, the measurement accuracy of the gas momentum meter will be negatively affected.
    When the air source pressure of the gas gauge is unstable, the adjustment method is as follows:
    See if the air pressure is there0.4~0.7MPaArea, can be checked by pressure gauge, out of range, should be repaired gas gauge regulator.

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