背压阀为隔膜式，能调整设定压力。
本仪器可任意设定压力值。
保压时，瞬间掉压许多，总达不到设定压力。
Pressure, the instantaneous pressure many, always can not meet the set pressure.
设定压力水平。
到达设定压力时泵自动停止，压力下降时恢复工作。
Reach the set pressure pump auto stop, the resumption of work pressure drop.
一旦系统压力低于设定压力，空压机又会自动软启动。
Once the system pressure below the set pressure, air compressor and will automatically soft start.
智能型压力传感器，使用者可任意设定压力范围及报警点。
Smart pressure sensor, and user can set the pressure range and the warning signal discretionarily.
智能型压力传感器，使用者可任意设定压力范围及报警点。
Smart pressure sensor, and user can set the pressure range and the warning signal discretionarily.
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