G - Physics – 01 – F
Patent
G - Physics
01
F
342/38
G01F 1/00 (2006.01) F23N 5/18 (2006.01) G01F 15/00 (2006.01) G08B 17/117 (2006.01) F23N 5/20 (2006.01)
Patent
CA 1279715
ABSTRACT A flow rate of a gas is measured by a flow rate measurement means, and when the flow rate exceeds a predetermined reference value, occurrence of an abnormal state such as escape of the gas is detected and a shutoff means is automatically closed by control of a micro- computer, furthermore, "a gas consumption pattern" showing combination of an amount of gas consumption, maximum flow rate and continuous consumption time of a consumer is observed in a predetermined time period, and a reference value of the gas consumption pattern is decided on the basis of the consumption state, moreover, a decision level of abnormal state is varied and set as a new reference values corresponding to the gas consumption pattern.
549615
Asano Kazutaka
Nakane Shinichi
Uno Takashi
Borden Ladner Gervais Llp
Matsushita Electric Industrial Co. Ltd.
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