目前,检定压力表的校验器大多是人工手动造压,造压过程劳动强度大、效率低。当用液体作介质检定压力表时,检定后的压力表内易残留液体,可能引发事故。如在以高压空气为动力的设备上压力表内残存水,会造成冰堵使设备无法运行。人工去除残留液难度较大且不易彻底清除,操作不当有可能导致压力表出现零点指示偏移等故障。校验器内液体反复循环 At present, most of the verifiers of verification pressure gauges are man-made manual pressure-making, labor-intensive and inefficient in the pressure-making process. When using liquid as the medium to check the pressure gauge, the pressure gauge may easily remain liquid in the test, which may cause an accident. As in high-pressure air-powered devices on the pressure gauge residual water, will cause ice blocking the device can not run. Manually remove the residual liquid is more difficult and difficult to remove completely, improper operation may lead to the pressure gauge zero shift instructions and other faults. Checker liquid repeatedly circulated