【発明の名称】ガスメータの流量補正装置

Japanese Patent JP3349604

B2

PURPOSE: To eliminate the need for a complex mechanical flow-rate compensation treatment and at the same time accurately compensate flow rate even if the operating speed of a mechanical movable part changes during one cycle when a flow rate is constant in a gas meter with the mechanical movable part. CONSTITUTION: A circular plate 51 rotates at a rate corresponding to a gas flow rate and a pulse with a cycle corresponding to a flow rate is generated by a waveform-shaping circuit 55. In a flow-rate compensating device, a pulse counter 61 measures the number of pulses in a specific amount of time which is counted by a timer 62 and an average pulse cycle operation part 63 calculates an average pulse cycle. Then, a flow-rate operation part 64 calculates a compensated flow rate based on the average pulse cycle by referring to a table 65 for expressing the relationship between the average pulse cycle and the compensated flow rate.

JP4991460	Gas meter unit
JP2568763	GAS FLOW RATE MEASURING SYSTEM
JP3464391	ESTIMATION TYPE FLOWMETER

Tsutomu Ohtani
Takashi Ueki
Nobuo Negoro
Isao Kaneko
Kazuya Fujisawa
Yoshio Yumida
Yasunobu Sato
Kazuo Shimakawa
Mineyuki
Kaoru Maeda
Noriyuki Watanabe
Katsuhisa Hanaki

JP30035294A

November 25, 2002

November 09, 1994

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Tokyo Gas Co., Ltd.
Kinmon Manufacturing Co., Ltd.
Takenaka Manufacturing Co., Ltd.
Aichi Clock Electric Co., Ltd.

G01F1/00; G01F3/22; G01F25/00; (IPC1-7): G01F3/22; G01F1/00; G01F25/00

JP642993A
JP4265825A
JP5834321A
JP427489B2

Yoichiro Fujishima

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