PROBLEM TO BE SOLVED: To provide a water level detecting device capable of detecting a level of insulating liquid without being affected by liquid having fixability.SOLUTION: A water level detecting device includes: a container capable of storing liquid an electrode sensor in which a water level detection part is fixed at a first water level in the container an enclosure arranged in the container which has an opening at a second water level higher than the first water level and a float sensor arranged in the enclosure, including a float that moves up and down by buoyant force, a signal input part that moves up and down in conjunction with the float and transmits a signal, and a lead switch that becomes adjacent to the signal input part when the float is in the position lower than the second water level, and is started/stopped by the signal input part being adjacent.COPYRIGHT: (C)2016,JPO&INPIT【課題】固着可能性を有する液体の影響を受けることなく、絶縁性の液体の水位を検知可能な水位検知装置等を提供する。【解決手段】水位検知装置は、液体を貯留可能な容器と、前記容器内の第1水位に水位検知部が固定された電極センサと、前記容器内に配置され、前記第1水位よりも高い第2水位に開口部を有する囲いと、前記囲いの中に配置され、浮力により上下するフロート、前記フロートに連動して上下し、信号を発信する信号入力部、および前記フロートが前記第2水位よりも低い位置にある時に前記信号入力部に隣接し、前記信号入力部が隣接することにより起動/停止するリードスイッチ、を含むフロートセンサと、を含む。【選択図】図3
