的 压力打不上去，可能存在的问题以及解决方法 有以下几点 下： The pressure of the pressure calibrator can't catch up. The possible problems and solutions are as follows :
置的 压力软管的快速接头内的“O” 型圈掉了，导致输出不封压力打不上 。 First, the "O" ring in the quick connector of the pressure hose configured for pressure output is lost, resulting in an unsealed output pressure .
应将密封圈垫上 。 Solution: Put the seal on the gasket .
。 Second, the test form was not connected .
方法： 先 用M10*1 的 堵头在压力输出口处直接堵紧，然后打压对 压力 校验 仪 自身进行密封检查，如果漏 压 说明校验仪 出现问题 ，如不漏压能加上压，说明被检表没接好 。 Solution : First plug the M10 * 1 plug directly at the pressure output port, and then press down to check the seal of the pressure calibrator itself. If the pressure leaks, it means that there is a problem with the calibrator. , Indicating that the form under test was not connected .
压力校验仪 是即带正压， 又 带负压的，可能是正负压切换开关未切换到位 。 3. If the pressure calibrator has both positive and negative pressure, the positive and negative pressure switch may not be in place .
校验正压时 将 切换开关全部拔出，校验负压时应将切换开关按到位 。 Solution: Pull out the switch when checking the positive pressure, and press the switch in place when checking the negative pressure .
。 Fourth, the low pressure is okay when the pressure is on. The hand pressure pump will pop out when the pressure is high, and the resistance will be greater .
在造压时手压泵必须推到位，压力 才 可从单向阀进去， 如果 感觉有种活塞与前相碰撞的感觉 就可以 说明压力泵推到位 。 Solution: The hand pump must be pushed in place during pressure build-up before the pressure can enter from the one-way valve. If there is a feeling of the piston colliding with the front, it can be said that the pressure pump is pushed in place .
。 5. The cut-off valve is not locked, and the pressure calibrator cannot maintain the pressure .
应顺时针锁紧阀门． Solution: The valve should be locked clockwise.