JPS54130159A - Flowmeter - Google Patents

Flowmeter

Info

Publication number
JPS54130159A
JPS54130159A JP3751278A JP3751278A JPS54130159A JP S54130159 A JPS54130159 A JP S54130159A JP 3751278 A JP3751278 A JP 3751278A JP 3751278 A JP3751278 A JP 3751278A JP S54130159 A JPS54130159 A JP S54130159A
Authority
JP
Japan
Prior art keywords
fluid
phase
velocity
correction
temperature
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
JP3751278A
Other languages
Japanese (ja)
Inventor
Yoshio Kurita
Noritake Shibata
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works Ltd
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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP3751278A priority Critical patent/JPS54130159A/en
Publication of JPS54130159A publication Critical patent/JPS54130159A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Volume Flow (AREA)

Abstract

PURPOSE: To make possible highly accurate measurement of the flow rate of fluid and enable the correction of the distributions of velocity of flow and the correction of fluid temperature to be readily performed by detecting the noise signals at two positions within a pipeline and obtaining their correlations.
CONSTITUTION: In respective ultrasonic signal receivers 31, 32, the high frequency signals X, Y containing noise signals of the same phase and same amplitude produced owing to the vibrations transmitting in a pipeline 1 and the power source fluctuations of an oscillator 4 are obtained. In a phase demodulator 50, the phase difference of the signals X, Y is detected and in a self-correlator 6, the self-correlation function of the phase difference signal is obtained. Further in a phase demodulator 55, the phase difference of the signal Y from the receiver 32 and the transmission signal from the oscillator 4 is demodulated, by which the temperature of fluid is detected. The outputs of the correlator 6 and demodulator 55 are inputted to a microprocessor μP, where the velocity of fluid is measured. The temperature is indicated in a display device ID 1 and the velocity after correction in a display device ID 2.
COPYRIGHT: (C)1979,JPO&Japio
JP3751278A 1978-03-31 1978-03-31 Flowmeter Pending JPS54130159A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3751278A JPS54130159A (en) 1978-03-31 1978-03-31 Flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3751278A JPS54130159A (en) 1978-03-31 1978-03-31 Flowmeter

Publications (1)

Publication Number Publication Date
JPS54130159A true JPS54130159A (en) 1979-10-09

Family

ID=12499582

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3751278A Pending JPS54130159A (en) 1978-03-31 1978-03-31 Flowmeter

Country Status (1)

Country Link
JP (1) JPS54130159A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503444B1 (en) * 2006-03-28 2007-10-15 Univ Graz Tech ADAPTIVE PROCESS FOR IMPROVING FUNCTIONAL SAFETY IN CROSS CORRELATION FLOW METERS
CN112997051A (en) * 2018-12-26 2021-06-18 德州仪器公司 Dynamic temperature calibration of ultrasound transducers

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5016567A (en) * 1973-05-07 1975-02-21

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5016567A (en) * 1973-05-07 1975-02-21

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT503444B1 (en) * 2006-03-28 2007-10-15 Univ Graz Tech ADAPTIVE PROCESS FOR IMPROVING FUNCTIONAL SAFETY IN CROSS CORRELATION FLOW METERS
CN112997051A (en) * 2018-12-26 2021-06-18 德州仪器公司 Dynamic temperature calibration of ultrasound transducers

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