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一、数字压力计示值变动规律及原因数字压力计在设定标准值时示值之所以变动,是因为数字压力计与压力校验器组成的压力测试系统是密闭非动态平衡系统。加压过程中由于压缩原因,气体或液体分子需吸收能量,分子间隙缓慢减小,所以压力不会立即稳定,表现为压力缓慢下降,需要一段时间才会稳定。降压过程中由于膨胀原因,分子需要释放能量,分子间隙增大,表现为压力有微量上升,
First, the digital pressure gauge changes in the law and the reasons Digital pressure gauge in setting the standard value shows the reason why the change is because the digital pressure gauge and pressure calibrator pressure test system is a closed non-dynamic balance system. Due to the compression process during compression, gas or liquid molecules need to absorb energy, the molecular gap decreases slowly, so the pressure will not immediately stabilize, showing a slow pressure drop, it will take some time to stabilize. Pressure reduction process due to expansion reasons, the molecules need to release energy, the molecular gap increases, showing a slight increase in pressure,