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One of the constant water pressure control circuits for water pumps controlled by electric contact pressure gauges
Source: InternetPublisher:念念Brown Keywords: pressure gauge control circuit relay Updated: 2020/10/02
In the figure, KP is the control contact of the electric contact pressure gauge . Contacts 1-2 are connected when the pressure is low, and
contacts 1-3 are connected when the pressure is high. Through KP control, automatic control of constant water pressure is achieved. However, this circuit is prone to
flashover and singeing faults in the contacts of relays KAi and KA2, which affects the stability of the work.
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