JPS6040916A - Correcting method of temperature-change error of ultrasonic wave flow speed and flow rate meter - Google Patents

Correcting method of temperature-change error of ultrasonic wave flow speed and flow rate meter

Info

Publication number
JPS6040916A
JPS6040916A JP58149242A JP14924283A JPS6040916A JP S6040916 A JPS6040916 A JP S6040916A JP 58149242 A JP58149242 A JP 58149242A JP 14924283 A JP14924283 A JP 14924283A JP S6040916 A JPS6040916 A JP S6040916A
Authority
JP
Japan
Prior art keywords
ultrasonic wave
flow speed
temperature
speed
response
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP58149242A
Other languages
Japanese (ja)
Inventor
Shigeru Tanizawa
Original Assignee
Shigeru Tanizawa
Hirose Haruo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shigeru Tanizawa, Hirose Haruo filed Critical Shigeru Tanizawa
Priority to JP58149242A priority Critical patent/JPS6040916A/en
Publication of JPS6040916A publication Critical patent/JPS6040916A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
    • G01F1/66Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by measuring frequency, phaseshift, or propagation time of electromagnetic or other waves, e.g. ultrasonic flowmeters
    • G01F1/667Schematic arrangements of transducers of ultrasonic flowmeters; Circuits therefor
    • G01F1/668Compensating or correcting for variations in velocity of sound
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
    • G01F1/74Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00Details of, or accessories for, apparatus of the preceding groups insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/02Compensating or correcting for variations in pressure, density or temperature
    • G01F15/022Compensating or correcting for variations in pressure, density or temperature using electrical means
    • G01F15/024Compensating or correcting for variations in pressure, density or temperature using electrical means involving digital counting

Abstract

PURPOSE:To correct the temperature-change error of a flow speed highly accurately at high response, by arranging an ultrasonic vibrator at a right angle with the flow speed, measuring a repeating frequency and the like based on pulse reflected from a pipe wall, determining the sound speed of a fluid, and correcting errors of the ultrasonic wave flow speed. CONSTITUTION:An ultrasonic wave from an ultrasonic wave vibrator 4, which is arranged at a right angle with a flow speed, is reflected by a wall Q and received. The ultrasonic wave is emitted from the vibrator 4 in response to said receiving. Based on the repeating of the operation, the sum T of the delay times of transmission and reception, an ultrasonic wave repeating frequency Fc, and the like are measured. A sound speed C in a fluid, which is changed in response to temperature is determined based on the expression II. A flow speed V obtained by the expression I using the values from ultrasonic vibrators 3A and 3B becomes the value of the expression III based on the sound speed C. Therefore a nonlinear correcting circuit and the like are not required, and the temperature- change error of the flow speed in the ultrsonic wave measurement is corrected highly accurately at high response. In the formula, D is the diameter of a pipe.
JP58149242A 1983-08-17 1983-08-17 Correcting method of temperature-change error of ultrasonic wave flow speed and flow rate meter Pending JPS6040916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58149242A JPS6040916A (en) 1983-08-17 1983-08-17 Correcting method of temperature-change error of ultrasonic wave flow speed and flow rate meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58149242A JPS6040916A (en) 1983-08-17 1983-08-17 Correcting method of temperature-change error of ultrasonic wave flow speed and flow rate meter

Publications (1)

Publication Number Publication Date
JPS6040916A true JPS6040916A (en) 1985-03-04

Family

ID=15470985

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58149242A Pending JPS6040916A (en) 1983-08-17 1983-08-17 Correcting method of temperature-change error of ultrasonic wave flow speed and flow rate meter

Country Status (1)

Country Link
JP (1) JPS6040916A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06201425A (en) * 1992-10-06 1994-07-19 Caldon Inc Device and method for measuring flow rate of liquid in pipe
US5461931A (en) * 1991-09-16 1995-10-31 British Gas Plc Measurement system
US5597962A (en) * 1995-03-31 1997-01-28 Caldon, Inc. Apparatus for determining fluid flow
FR2826455A1 (en) * 2001-06-25 2002-12-27 Univ Pasteur METHOD AND DEVICE FOR MEASURING SPEEDS OF LIQUIDS IN PIPES AND CHANNELS

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5461931A (en) * 1991-09-16 1995-10-31 British Gas Plc Measurement system
GB2259571B (en) * 1991-09-16 1996-01-17 British Gas Plc Measurement system
EP0724139A2 (en) * 1991-09-16 1996-07-31 British Gas plc Measurement system
EP0724139A3 (en) * 1991-09-16 1997-10-15 British Gas Plc Measurement system
JPH06201425A (en) * 1992-10-06 1994-07-19 Caldon Inc Device and method for measuring flow rate of liquid in pipe
US5546813A (en) * 1992-10-06 1996-08-20 Caldon, Inc. Apparatus for determining fluid flow
US5597962A (en) * 1995-03-31 1997-01-28 Caldon, Inc. Apparatus for determining fluid flow
US5639972A (en) * 1995-03-31 1997-06-17 Caldon, Inc. Apparatus for determining fluid flow
US5705753A (en) * 1995-03-31 1998-01-06 Caldon, Inc. Apparatus for determining fluid flow
US7159472B1 (en) 1995-03-31 2007-01-09 Cameron International Corporation Apparatus for determining fluid flow
FR2826455A1 (en) * 2001-06-25 2002-12-27 Univ Pasteur METHOD AND DEVICE FOR MEASURING SPEEDS OF LIQUIDS IN PIPES AND CHANNELS
WO2003001159A1 (en) * 2001-06-25 2003-01-03 Universite Louis Pasteur (Etablissement Public A Caractere Scientifique, Culturel Et Professionnel) Method and device for measuring the speed of liquids in conduits and channels

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