公开(公告)号：EP1402550A1

公开(公告)日：2004-03-31

申请号：EP02723971.4

申请日：2002-04-25

申请人： ASCO CONTROLS, L.P.

发明人： PIMOUGET, Olivier, Denis

IPC分类号： H01H35/40 ,  H01H35/38

CPC分类号： H01H36/0046 ,  H01H13/186 ,  H01H36/0033

摘要： An electrical switch (10) for indicating the position of a movable member of a valve is disclosed. The movable member of the valve may be a linear moving stem or a rotating shaft. The switch includes a sensor (50) held in a sealed enclosure. The sensor may be a reed switch or a Hall effect sensor. A pivot arm (86) attaches to the enclosure and is biased by a spring (60). The pivot arm holds a permanent magnet (70) adjacent to the enclosure. When an actuator moves the movable member of the valve, the pivot arm is forced against the enclosure. The magnet is moved into aligned relation to the sensor and electrically indicates the position of the movable member.