Surface water detector
    101.
    发明授权
    Surface water detector 失效
    表面水检测仪

    公开(公告)号:US3562731A

    公开(公告)日:1971-02-09

    申请号:US3562731D

    申请日:1968-04-01

    CPC classification number: D06F39/081 G01M3/045 H01H35/42

    Abstract: AN AUTOMATICALLY OPERATIVE ALARM FOR WARNING PERSONS OF THE PRESENCE OF ADVANCING WATER IN A ROOM SUCH AS A BOILER OR ENGINE ROOM WHEREIN RISING WATER WOULD BE CAPABLE OF DAMAGE, THE ALARM COMPRISING AN ELECTRIC SWITCH THAT IS CLOSABLE BY THE EXPANSION OF A CAPSULE CONTAINING A SUBSTANCE EXPANDABLE IN WATER, THE SWITCH CLOSING A CIRCUIT TO AN AUDIBLE OR VISULA ALARM.

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