The mechanical wear of the components of the gas gauge will affect the change of the measurement magnification and the stability of the indication value, mainly4In this case:
    (1) Magnification nail0When air leakage is caused by ring wear, the measurement ratio decreases.
    (2Uneven wear and depression of the end face of the thimble cause the indication value to be unstable;
    (3The measuring head wear causes the magnification to decrease;
    (4The locking nut and the magnification nail have axial movement or radial swing, resulting in instability of the indicating value.

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