PROBLEM TO BE SOLVED: To provide a status detecting device which effectively removes an internal air bubble even when a fluid flows in a forward direction and backward direction.SOLUTION: The status detecting device 1 is interposed in a duct and detects the status of a fluid passing through a duct. The status detecting device 1 includes: a fluid collecting portion 2, interposed in the duct, for collecting the fluid passing through the duct an inlet portion 4 for making the fluid flow into the fluid collecting portion 2 an outlet portion 5 for making the fluid flow out from the fluid collecting portion 2 an inlet hole 8 positioned at the rear end of the inlet portion 4 and an outlet hole 9 positioned at the front end of the outlet portion 5, which are provided above the vertical center of the fluid collecting portion 2 being normally mounted. The angle between a flow-in direction axis representing the flow-in direction of the fluid flowing from the inlet hole 8 through the center of the inlet hole 8, and a flow-out direction axis representing the flow-out direction of the fluid flowing out from the outlet hole 9 through the center of the outlet hole 9 is not less than 140 degrees but not more than 170 degrees.COPYRIGHT: (C)2013,JPO&INPIT【課題】液流が順方向および逆方向のいずれの場合にも内部に存在する気泡を有効に除去することのできる状態検知装置の提供。【解決手段】管内に流通する液体の状態を前記管に介在配置された状態で検知する状態検知装置1であって、管に介在配置され、前記管内に流通する液体を貯留する貯液部2と、前記貯液部2に液体を流入させる流入部4と、前記貯液部2から液体を流出させる流出部5と、通常の取り付け状態における前記貯液部2の鉛直方向中央部より上側に、前記流入部4の後端部である流入口8と、前記流出部5の先端部である流出口9とを備える状態検知装置1であって、前記流入口8の中央を通り当該流入口8から流入する液体の流入方向を示す流入方向軸と、前記流出口9の中央を通り当該流出口9から流出する液体の流出方向を示す流出方向軸とがなす角度が140度以上、170度以下である。【選択図】図2
