GAS METER, CONTROL METHOD OF GAS METER, AND GAS MONITORING SYSTEM

To provide a gas meter capable of improving a user's convenience and fully considering safety, and capable of executing restoration processing in line with a surrounding disaster situation following earthquake motion, and to provide a control method of the gas meter, and a gas monitoring system.SOLUTION: A control method of a gas meter executes: earthquake motion index derivation control for deriving an earthquake motion index as an index for indicating an influence of earthquake motion on gas facilities from a point of time when gas shutoff control is executed to a current point of time based on a value equivalent to seismic intensity stored from a point of time when gas shutoff control is executed by control for storing a value equivalent to seismic intensity to a current point of time; and restoration processing setting control for setting selectable restoration processing from among plural pieces of restoration processing for shifting a cutoff valve 30 in a closed state to an open state by gas cutoff control based on a seismic intensity index derived by earthquake motion index derivation control.SELECTED DRAWING: Figure 1 【課題】使用者の利便性の向上を図りつつ安全性にも十分に配慮でき、且つ地震動に伴う周辺の被害状況に則した復帰処理を実行することができるガスメータ、ガスメータの制御方法、及びガス監視システムを提供する。【解決手段】震度相当値記憶制御においてガス遮断制御が実行された時点から現時点までに記憶された震度相当値に基づいて、ガス遮断制御が実行された時点から現時点までの地震動のガス設備への影響を示す指標としての地震動指標を導出する地震動指標導出制御と、地震動指標導出制御にて導出された地震動指標に基づいて、ガス遮断制御により閉止状態にある遮断弁３０を開放状態へ移行させる複数の復帰処理の中から、選択可能な復帰処理を設定する復帰処理設定制御とを実行する。【選択図】図１