JPS58202829A - 超音波ドツプラ−流量計 - Google Patents

超音波ドツプラ−流量計

Info

Publication number
JPS58202829A
JPS58202829A JP57084824A JP8482482A JPS58202829A JP S58202829 A JPS58202829 A JP S58202829A JP 57084824 A JP57084824 A JP 57084824A JP 8482482 A JP8482482 A JP 8482482A JP S58202829 A JPS58202829 A JP S58202829A
Authority
JP
Japan
Prior art keywords
signal
comparator
input signal
output
receiving
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.)
Granted
Application number
JP57084824A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0421808B2 (cs
Inventor
Koji Saito
功治 斉藤
Masao Fukunaga
福永　正雄
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP57084824A priority Critical patent/JPS58202829A/ja
Publication of JPS58202829A publication Critical patent/JPS58202829A/ja
Publication of JPH0421808B2 publication Critical patent/JPH0421808B2/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)
  • Manipulation Of Pulses (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
JP57084824A 1982-05-21 1982-05-21 超音波ドツプラ−流量計 Granted JPS58202829A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57084824A JPS58202829A (ja) 1982-05-21 1982-05-21 超音波ドツプラ−流量計

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57084824A JPS58202829A (ja) 1982-05-21 1982-05-21 超音波ドツプラ−流量計

Publications (2)

Publication Number Publication Date
JPS58202829A true JPS58202829A (ja) 1983-11-26
JPH0421808B2 JPH0421808B2 (cs) 1992-04-14

Family

ID=13841496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57084824A Granted JPS58202829A (ja) 1982-05-21 1982-05-21 超音波ドツプラ−流量計

Country Status (1)

Country Link
JP (1) JPS58202829A (cs)

Also Published As

Publication number Publication date
JPH0421808B2 (cs) 1992-04-14

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