FLOWMETER - MATSUSHITA ELECTRIC IND CO LTD

Title:

FLOWMETER

Document Type and Number:

WIPO Patent Application WO/2001/001081

Kind Code:

A1

Abstract:

To solve the problems, a flowmeter comprises transmitting/receiving means adapted for transmission/reception using the variation of the state of a fluid and provided in a passage, repeating means for repeating the transmission and reception, time measuring means for measuring the propagation time repeated by the repeating means, a flow rate measuring means for measuring the rate of flow according to the value measured by the time measuring means, and number-of-repetitions changing means for changing the number of repetitions to a predetermined number. The influence of the variation of the flow can be suppressed by changing the number of repetitions to a number suitable for the variation, and thus stable flow rate measurement with high accuracy is possible.

Inventors:

UMEKAGE YASUHIRO (JP)
NAGAOKA YUKIO (JP)
EGUCHI OSAMU (JP)
ABE SHUJI (JP)
NAKABAYASHI YUJI (JP)
OHJI KENZO (JP)
SHIBA FUMIKAZU (JP)
ADACHI AKIHISA (JP)
HASHIMOTO MASAHIKO (JP)
SATO TOSHIHARU (JP)
FUJII YUJI (JP)

Application Number:

PCT/JP2000/004165

Publication Date:

January 04, 2001

Filing Date:

June 23, 2000

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC IND CO LTD (JP)
UMEKAGE YASUHIRO (JP)
NAGAOKA YUKIO (JP)
EGUCHI OSAMU (JP)
ABE SHUJI (JP)
NAKABAYASHI YUJI (JP)
OHJI KENZO (JP)
SHIBA FUMIKAZU (JP)
ADACHI AKIHISA (JP)
HASHIMOTO MASAHIKO (JP)
SATO TOSHIHARU (JP)
FUJII YUJI (JP)

International Classes:

G01F1/66; G01F1/72; G01P5/24; (IPC1-7): G01F1/66

Foreign References:

JPH09304139A	1997-11-28
JPH1144563A	1999-02-16
JPH08304135A	1996-11-22
JPH08271313A	1996-10-18
US5513535A	1996-05-07
JPS635217A	1988-01-11
EP0806635A1	1997-11-12
JPH09304139A	1997-11-28
JPH1144563A	1999-02-16

Other References: