弹簧管式压力表,从测量上限(一般为零)到测量下限,一般指针偏转角为270°、240°、180°三种情况。调整示值误差时,可取下表盘,将指针向下垂直安放,加压达到该表测量上限,视其指针偏转角是否能达到270°、240°、180°(依表盘的设计而定)。若偏转角达不到或者超过规定,应调整滑接螺丝或转动机芯来 Spring tube pressure gauge, from the upper limit of measurement (usually zero) to the lower limit of measurement, the general pointer deflection angle of 270 °, 240 °, 180 ° three cases. Adjust the indication error, the dial can be removed, the pointer down vertically placed pressure to reach the upper limit of the table, depending on whether the pointer deflection angle can reach 270 °, 240 °, 180 ° (depending on the design of the dial). If the deflection angle can not reach or exceed the regulation, adjust the sliding screw or turn the movement