ELECTRONIC FLOWMETER AND FLOW RATE MONITORING SYSTEM

To provide an electronic flowmeter with which it is possible to determine a fluid usage state as to whether a fluid is used or not with greater accuracy by a simple composition.SOLUTION: An electronic tap water meter comprises: a flow rate measurement unit 9 for measuring the flow rate of tap water supplied to a resident house 2; a determination unit 26 for comparing the flow rate value obtained from the measured value of the flow rate measurement unit 9 with a reference value for determination, and performing determination operation to determine a tap water use state at the resident house 2; and a notification unit 28 for notifying the determination result of the determination unit 26 toward a management center side system 5. The determination unit 26 performs determination operation in a plurality of determination time slots. The determination time slots refer to time slots in which determination start times in one day differ from each other.SELECTED DRAWING: Figure 2 【課題】簡単な構成により精度よく流体の使用・不使用などの流体使用状態を判定可能な電子式流量計を提供すること。【解決手段】電子式水道メータは、居住者宅２に供給される水道水の流量を計測する流量計測部９と、流量計測部９の計測値から得られる流量値を判定用基準値と比較して、居住者宅２での水道水の使用状態を判定する判定動作を行う判定部２６と、判定部２６の判定結果を管理センタ側システム５に向けて通報する通報部２８とを有している。判定部２６は、複数の判定用時間帯において判定動作を行う。判定用時間帯は、例えば、１日のうちで判定開始時刻が相互に異なる時間帯である。【選択図】図２