FLOW MEASURING DEVICE, COMMUNICATION SYSTEM, FLOW MEASURING METHOD, FLOW MEASURING PROGRAM, AND FLUID SUPPLY SYSTEM

摘要

Behavior different from that at a normal time of operating an appliance is detected, and it is possible to discriminate an improper use state. In a gas meter 100, an ultrasonic flow rate meter 104 measures a flow rate of gas flowing in a flow path 102. A new event detecting unit 108 detects unsteady behavior as a new event, which is different from that at the normal time of operating an appliance using a fluid and which has not occurred in a hitherto use circumstance in a use circumstance, by using a flow rate pattern of the measured flow rate. Accordingly, it is possible to discriminate an improper use state such as ignition failure and breakdown. A transmission/reception unit 110 transmits a new event signal representing the new event of the unsteady behavior detected by the new event detecting unit 108, to a center apparatus 200 through a network 300.