HED3 SPRING PIPE PRESSURE SWITCH

    1、HED 3 series hydraulic-electric pressure switch is a spring pipe type one . It is composed of bowl(1) , spring pipe (2) with lever (3) , two micro-switches(4) and two adjusting screws(5) .

    2、HED 3 series pressure switch is turned on or off by pressure. The pressure to be monitored is fransfered to spring pipe(2), allowing it to bend, the lever(3) connecting with it transfer the displacement of spring pipe to micro switches, which makes the circuit turned on or off as specified.  If the pressure still rises allowing the spring pipe continuously bend, the second micro-switch will actuate to turn on or off the circuit as specified.

    3、Adjusting change-over pressure

    The two change-over pressure switch are position by micro-switch are adjusted respectively by two screws (5). If relays are used, differential pressure varies in step less.