校验的方法有以下几种： There are several common methods of pressure gauge calibration:
三者对； There is a pressure gauge calibrator at the same time, there are several takeovers on the connecting pipe, you can also use a weight plunger, you can also use a standard pressure gauge, and the calibrated pressure gauge three;
When the calibrator is pressurized, the mercury in the container rises from the glass tube, and the accuracy of the liquid column pressure gauge calibrator is on the connecting tube of the calibrator by the raised scale value and the comparison of the pressure gauge reading. One side is connected to the calibrated pressure gauge, and the other side is connected with mercury
The mark on the glass tube container and glass tube is the pressure indication value.
When the calibrator is pressurized, the reading errors of the two gauges are compared to obtain the accuracy of the calibrated pressure gauge; the standard pressure gauge type calibrator is on the communication pipe of the calibrator, and the calibrated pressure gauge is connected to one side. 2. The other side is connected with a standard pressure gauge that is 1-2 grades higher than the calibrated pressure gauge.
表盘读数相对比、即可知压力表的准确度。 After the pressure device pressurizes the oil, the piston is lifted up, and the weight of the lifted up is compared with the reading of the pressure gauge dial, and the accuracy of the pressure gauge can be known. The weight type pressure gauge calibrator is on the communication tube of the calibrator, one side is connected with the calibrated pressure gauge, and the other side is connected with a 1 cm2 area.
There are many weights on the piston and on the piston rod.