Flow rate measurement device

Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system

Reexamination Certificate

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Reexamination Certificate

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07809514

ABSTRACT:
A flow rate measurement device (1) connected to a household gas supply pipe includes: a flow rate sensor (3) which measures a flow rate at predetermined time intervals; a computing unit (6) which differentiate the measured flow rate; a library (7); and an judging unit (8) which compares the differentiated flow rate against an activation threshold value stored in the library (7) and determines a change of the operation state of an appliance connected downstream of the flow rate sensor (3).

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patent: 2010/0017150 (2010-01-01), Itou et al.
patent: 2010/0138167 (2010-06-01), Bessyo et al.
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English Translation of JP 2003-149027, May 2003.
English Abstract of 11-287684, Oct. 1999.
English Abstract of JP 2008224279, Sep. 2008.

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