JPH0324609B2 - - Google Patents

Info

Publication number
JPH0324609B2
JPH0324609B2 JP56101995A JP10199581A JPH0324609B2 JP H0324609 B2 JPH0324609 B2 JP H0324609B2 JP 56101995 A JP56101995 A JP 56101995A JP 10199581 A JP10199581 A JP 10199581A JP H0324609 B2 JPH0324609 B2 JP H0324609B2
Authority
JP
Japan
Prior art keywords
phase difference
signal
circuit
phase change
change amount
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.)
Expired
Application number
JP56101995A
Other languages
English (en)
Japanese (ja)
Other versions
JPS582752A (ja
Inventor
Shinichi Amamya
Tadahiko Yanajima
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56101995A priority Critical patent/JPS582752A/ja
Publication of JPS582752A publication Critical patent/JPS582752A/ja
Publication of JPH0324609B2 publication Critical patent/JPH0324609B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/663—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters by measuring Doppler frequency shift

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
JP56101995A 1981-06-30 1981-06-30 超音波流速計 Granted JPS582752A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56101995A JPS582752A (ja) 1981-06-30 1981-06-30 超音波流速計

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56101995A JPS582752A (ja) 1981-06-30 1981-06-30 超音波流速計

Publications (2)

Publication Number Publication Date
JPS582752A JPS582752A (ja) 1983-01-08
JPH0324609B2 true JPH0324609B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1991-04-03

Family

ID=14315401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56101995A Granted JPS582752A (ja) 1981-06-30 1981-06-30 超音波流速計

Country Status (1)

Country Link
JP (1) JPS582752A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3876370B2 (ja) * 1998-11-10 2007-01-31 バブコック日立株式会社 音響式流速計測装置

Also Published As

Publication number Publication date
JPS582752A (ja) 1983-01-08

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