原创、弹簧管式压力表的调整方法(国外英文资料).docVIP

原创、弹簧管式压力表的调整方法(国外英文资料) The pressure gauge has three common errors, such as the error of the value of the indicator, the error of return, and the stroke displacement. The absolute value is approximately the same. The reason for this error is that the pressure gauge gradually loosens the shaft of the needle in the long run. Adjust the method: this error will be eliminated by resetting the needle. When resetting the needle, consider the use range of the pressure gauge and the reasonable distribution of the error. It is advisable to choose the 40% of the upper limit of the measuring limit. Tap the handle of a screwdriver for a few times to prevent the pressure of the ambassadors pin shaft. 2, is proportional to the pressure value of error of relationship and in the same direction, with the increase of pressure value, the error absolute value also increase, the reasons for this error is the pressure gauge sector gear arm of leverage than produced change, need to adjust. Adjustment: loosen the connection screw of the connecting rod and the sector, adjust the arm length of the sector, and adjust the connecting rod to the outside if it is the positive error. If its a negative error, were going to turn the link up. When adjusted, tighten the screw (in moderation) and dont be anxious to fix the needle. Use the thumb to pin the needle on the shaft of the needle, preventing a bad adjustment and restarting the needle. The error can be reduced by adjusting the leverage ratio. The direction of the error of the indication is incongruent, before or after the positive or negative. This is because of the pressure gauge whose hands shaft gear sector gear and the initial meshing position changes, to adjust such error, fan-shaped gear arm length adjustment alone cant solve, only adjust the sector gear and whose hands the initial shaft gear meshing position to solve the problem. After adjustment method: if the error is a former is negative, to loosen the splint fixed screw, the gear tran