Analysis of the reasons why the pressure gauge pointer does not return to zero after leaving the factory
During transportation, the pressure gauge was dropped, resulting in damage to the movement. (Note: In this case, you can usually contact the merchant for replacement processing.)
During use, due to incorrect selection, the actual pressure exceeds the working load of the pressure gauge (overpressure), causing deformation of the pressure gauge tube or damage to the movement, both of which can be damaged simultaneously.
During use, if the working environment temperature is too high, the pipe may deform, causing the pointer to not return to zero and the pressure gauge to be inaccurate.
