The Control of Pressure Switch in Hydraulic Press

The first thing to know is that the hydraulic pressure gauge is used to investigate the working conditions, mainly to detect the liquid pressure is not to reach the appropriate specification. This is necessary, but when the hydraulic machine to work hours, the pressure gauge is not always necessary to open the situation?
In fact, the pressure gauge does not need to always open, only when the performance of the manometric effect of time to open, if the pressure to reach the request, then you can be closed. If you always open but will have a negative impact on the hydraulic machine, the pressure gauge to maintain a long-term operating conditions, the liquid pressure will continue to operate on the pressure gauge, hydraulic machine operation is unfavorable.