| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas meter device, that by implementing an operation sequentially of the variation of difference of instantaneous flow rate outputted from a flow-metering means, the variation of busy condition of gas apparatuses is discriminated from that variability, capable of comparing the measured variation (difference value) of flow rate of gas with the registered data to discriminate a kind of gas apparatus. SOLUTION: The gas meter device is comprised by containing a flow-metering means 3, connected with gas supply lines for domestic use, measuring gas flow rate at a constant time interval, an operation means 5 calculating the difference of flow rate outputted from the flow-metering means 3, and a comparing and discriminating means 8 where, by comparing the calculated difference from the operation means 5 with the magnitude of variation discriminating value registered in a memory means 6, the variation is discriminated of busy condition of gas apparatuses. COPYRIGHT: (C)2007,JPO&INPIT
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