JPS56157861A - Measuring system for velocity of flow of fluid - Google Patents

Measuring system for velocity of flow of fluid

Info

Publication number
JPS56157861A
JPS56157861A JP6051380A JP6051380A JPS56157861A JP S56157861 A JPS56157861 A JP S56157861A JP 6051380 A JP6051380 A JP 6051380A JP 6051380 A JP6051380 A JP 6051380A JP S56157861 A JPS56157861 A JP S56157861A
Authority
JP
Japan
Prior art keywords
flow
velocity
transducers
ultrasonic
transducer
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
JP6051380A
Other languages
Japanese (ja)
Inventor
Koji Toda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Priority to JP6051380A priority Critical patent/JPS56157861A/en
Publication of JPS56157861A publication Critical patent/JPS56157861A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/24—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
    • G01P5/245—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by measuring transit time of acoustical waves
    • G01P5/248—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by measuring transit time of acoustical waves by measuring phase differences

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

PURPOSE:To enable measurement of even a comparatively low velocity of flow at an improved precision, by a method wherein, in an ultrasonic velocity of flow measurement system, a transmitting ultrasonic transducer and two receiving ultrasonic transducers, which consist of a piezoelectric material and a pair of comb teeth- shaped electrodes mounted on the surface of said material. CONSTITUTION:An ultrasonic transducer, consisting of a piezoelectric material 10 and a pair of comb teeth-shaped electrodes 11a and 11b, which are positioned interdigitally, irradiates ultrasonic waves through the application of an alternating current voltage to the electrodes, and conversely, it outputs an electric signal for wave- receiving. A transmitting transducer 22 and wave-receiving transducers 23 and 24 are placed to measure a velocity of flow of a fluid 20 in a flow path 21. A difference between propagation time from the transducer 22 to the transducers 23 and 24 is decided according to the velocity of flow, and can be obtained from a detecting circuit 25 corresponding to a phase difference between the signals of the transducers 23 and 24.
JP6051380A 1980-05-09 1980-05-09 Measuring system for velocity of flow of fluid Pending JPS56157861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6051380A JPS56157861A (en) 1980-05-09 1980-05-09 Measuring system for velocity of flow of fluid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6051380A JPS56157861A (en) 1980-05-09 1980-05-09 Measuring system for velocity of flow of fluid

Publications (1)

Publication Number Publication Date
JPS56157861A true JPS56157861A (en) 1981-12-05

Family

ID=13144463

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6051380A Pending JPS56157861A (en) 1980-05-09 1980-05-09 Measuring system for velocity of flow of fluid

Country Status (1)

Country Link
JP (1) JPS56157861A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5720614A (en) * 1980-05-28 1982-02-03 Siemens Ag Ultrasonic flowmeter
JPS584075A (en) * 1981-06-30 1983-01-11 日本特殊陶業株式会社 Piezoelectric transformer for ultrasonic folw meter
JPS59100820A (en) * 1982-12-01 1984-06-11 Koji Toda Current meter of fluid
JP2001304929A (en) * 2000-04-21 2001-10-31 Koji Toda Ultrasonic sensor for liquid flow velocity

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5562378A (en) * 1978-11-02 1980-05-10 Osaka Gas Co Ltd Flowing speed measuring device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5562378A (en) * 1978-11-02 1980-05-10 Osaka Gas Co Ltd Flowing speed measuring device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5720614A (en) * 1980-05-28 1982-02-03 Siemens Ag Ultrasonic flowmeter
JPS63111619U (en) * 1980-05-28 1988-07-18
JPS584075A (en) * 1981-06-30 1983-01-11 日本特殊陶業株式会社 Piezoelectric transformer for ultrasonic folw meter
JPH0350207B2 (en) * 1981-06-30 1991-08-01 Ngk Spark Plug Co
JPS59100820A (en) * 1982-12-01 1984-06-11 Koji Toda Current meter of fluid
JPH0447769B2 (en) * 1982-12-01 1992-08-04 Koji Toda
JP2001304929A (en) * 2000-04-21 2001-10-31 Koji Toda Ultrasonic sensor for liquid flow velocity
JP4591858B2 (en) * 2000-04-21 2010-12-01 耕司 戸田 Ultrasonic liquid flow rate sensor

Similar Documents

Publication Publication Date Title
US3575050A (en) Fluid flowmeter
US4003252A (en) Acoustical wave flowmeter
ATE240506T1 (en) CROSS-MEASUREMENT OF ACOUSTIC SIGNALS OF A FLOW METER
JPS56157861A (en) Measuring system for velocity of flow of fluid
US3623363A (en) Ultrasonic flowmeter
EP0028540B1 (en) Method and apparatus for non-contact acoustic measurement of physical properties of continuously moving metal strip
JPS56111480A (en) Measuring device for motion speed
JPS5713320A (en) Liquid level gauge
US3283574A (en) Ultrasonic flowmeter
JPS577576A (en) Method of measuring moving velocity by ultrasonic wave
JPH0447769B2 (en)
JPS54143257A (en) Electromagnetic flowmeter
JPS56166429A (en) Ultrasonic measuring device
JPS561347A (en) Ultrasonic concentration-meter
RU2052770C1 (en) Ultrasonic touchless method for detecting thickness of articles
JPS5512462A (en) Acoustic liquid level detection
SU1113735A1 (en) Device for determination of articles flaws by acoustic emission signals
SU1673991A1 (en) Accelerometer
SU896412A1 (en) Method of determination of article thickness
SU987398A1 (en) Ultrasonic level indicator
SU811079A1 (en) Method and apparatus for determining ultrasound propagation speed
SU1104410A1 (en) Converter for measuring speed of sound in materials
DE3171309D1 (en) Liquid-level measurement
SU1142788A1 (en) Method of measuring time of distribution of ultrasound in material
SU538261A1 (en) Device for determining the parameters of the shock wave