Control circuit diagram
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One normally open upper limit pressure control display, one pressure transmitter, one three-wire control solenoid valve. Control circuit diagram for shutting off the upper limit valve when the pressure reaches that limit and automatically reopening it when the pressure falls below that limit; an actual diagram would be helpful. Urgent, thank you~! :(
Once the controller is set, if the pressure reaches the upper limit, an alarm is triggered and the shut-off valve closes; when the pressure falls below the upper limit, the alarm disappears and the shut-off valve opens
A very simple circuit diagram for reversing the direction of a motor