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为提高弹簧管式压力表的检修速度,在外观检查合格的前提下,检修人员可将被检表安装在压力表标准检定装置上,缓慢升压至各检定点,观察指针行走现状。1.如每一检定点超差值相同。可以在升压以后,在除零点以外的第一个检定点重新安装指针,校准示值。2.差值呈线性误差。误差逐渐增加时,将示值调节螺钉向外移以增加臂长;反之,则向内移以减少臂长。
In order to improve the inspection speed of the spring tube pressure gauge, under the precondition that the appearance inspection is qualified, the inspection staff can install the gauge under test on the gauge calibration device and slowly boost the pressure to each verification point to observe the walking status of the pointer. 1. If each check point the same value of the difference. After boosting, re-install the pointer at the first checkpoint other than zero and calibrate the indication. 2. The difference is linear error. As the error increases, move the indication screw outward to increase the arm length, and vice versa to reduce the arm length.