| 摘要 |
A problem of the present invention is to provide a flow rate measurement device which is capable of simplifying calculation, reducing the amount of memory necessary for calculation, absorbing variations in the flow rate which changes in various ways depending on the state of usage, and improving identification precision of appliances with a configuration which extracts characteristics of appliances. The flow rate measurement device monitors and determines the change in the flow rate measured by a flow rate measurement unit (104), and extracts and determines codes obtained by a differential conversion unit (112) and appliance characteristic flow rates representing the characteristics of gas appliances (13, 14, and 15), thereby identifying the gas appliances (13, 14, and 15) in which appliance characteristics vary depending on the state of usage. |
