FLOW RATE MEASURING APPARATUS

PROBLEM TO BE SOLVED: To provide a flow rate measuring apparatus capable of properly measuring the flow rate of fluid without lowering the calculation accuracy of the flow velocity of fluid. SOLUTION: An electric heating element 6 is heated under a prescribed heating condition by a heating power sou...

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Bibliographic Details
Main Authors ARAI RYOICHI, NAMIHIRA HIDEO, KAMITSUMA YUKA
Format Patent
LanguageEnglish
Published 31.08.2001
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 provide a flow rate measuring apparatus capable of properly measuring the flow rate of fluid without lowering the calculation accuracy of the flow velocity of fluid. SOLUTION: An electric heating element 6 is heated under a prescribed heating condition by a heating power source 8 based on a command from a control device 10, and the temperature of the fluid is measured by a thermometer 9 arranged on the downstream side from the electric heating element 6. The temperature response function of the fluid temperature analytically obtained from the heating condition of the electric heating element 6 is compared with the measured value of the thermometer 9 by an arithmetic unit 4 to obtain the flow velocity of the fluid, and the flow rate is obtained from this flow velocity and the information on the volume of a region in which the fluid flows.
Bibliography:Application Number: JP20000048505