1. The electric contact pressure gauge is actually a circuit switch operated by the pressure gauge. It only has an additional electric contact signal device on the ordinary pressure gauge. Therefore, the calibration of the pressure part is the same as that of the ordinary pressure gauge, except that after the pressure part is calibrated and qualified, the calibration of the electric contact signal device still needs to be added.

2. Steps for calibrating electric contact pressure gauges
Install the pressure gauge on the calibrator, use a needle setter to move the two signal contact pointers beyond the upper and lower limits, and then perform indication verification. After the indication verification is qualified, set the upper and lower limit signal contact pointers at three or more different verification points, slowly increase or decrease the pressure until the instantaneous signal is emitted. At this point, the standard pressure gaugeThe deviation between the reading of the signal and the indication of the signal pointer shall not exceed the absolute value of the allowable basic error.