The series connecting control circuit of electric contact pressure gauge and time relay

As shown in Figure, the circuit usestwo time relays KT1, KT2 to connect with thecontactsofelectric contact pressure gauge SP in series. When liquid or gas pressure has not yet reached, it can overcome thetrembling or spark phenomenons because of the SP`s incomplete separating andtoucing in the crash time of motor automatic start or stop,and itimprovesthe re..

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