FLOW RATE MEASURING APPARATUS

PROBLEM TO BE SOLVED: To prevent measurement accuracy in ultrasonic propagation time from becoming inferior by causing ultrasonic waves to be reflected on the upper surface or the lower surface of a measurement channel for affecting direct waves. SOLUTION: The influence of ultrasonic waves reflected...

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Bibliographic Details
Main Authors SATO MASATO, FUJII YASUSHI, ADACHI AKIHISA
Format Patent
LanguageEnglish
Published 04.03.2004
Edition7
Subjects
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
PHYSICS
TESTING
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Summary:PROBLEM TO BE SOLVED: To prevent measurement accuracy in ultrasonic propagation time from becoming inferior by causing ultrasonic waves to be reflected on the upper surface or the lower surface of a measurement channel for affecting direct waves. SOLUTION: The influence of ultrasonic waves reflected by the measurement channel is prevented by a measurement channel structure for measuring propagation time in ultrasonic waves at closer distance than last maximum where ultrasonic waves that are transmitted from an ultrasonic transceiver begin to spread. COPYRIGHT: (C)2004,JPO
Bibliography:Application Number: JP20020229727