CH618517A5 - - Google Patents

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Publication number
CH618517A5
CH618517A5 CH870877A CH870877A CH618517A5 CH 618517 A5 CH618517 A5 CH 618517A5 CH 870877 A CH870877 A CH 870877A CH 870877 A CH870877 A CH 870877A CH 618517 A5 CH618517 A5 CH 618517A5
Authority
CH
Switzerland
Prior art keywords
signal
input
reset
arrival delay
integrator
Prior art date
Application number
CH870877A
Other languages
German (de)
English (en)
Inventor
Poul Munk Larsen
Original Assignee
Danfoss As
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 Danfoss As filed Critical Danfoss As
Publication of CH618517A5 publication Critical patent/CH618517A5/de

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/24Measuring 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
    • G01P5/245Measuring 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
    • 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 a meter in a continuous flow
    • G01F1/66Measuring 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
    • G01F1/667Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/02Indexing codes associated with the analysed material
    • G01N2291/028Material parameters
    • G01N2291/02836Flow rate, liquid level

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Fluid Mechanics (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measuring Volume Flow (AREA)
  • Ceramic Products (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
CH870877A 1976-08-18 1977-07-14 CH618517A5 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2637107A DE2637107C2 (de) 1976-08-18 1976-08-18 Schaltungsanordnung zum Ermitteln physikalischer Größen strömender Medien nach der Ultraschallmethode

Publications (1)

Publication Number Publication Date
CH618517A5 true CH618517A5 (ja) 1980-07-31

Family

ID=5985706

Family Applications (1)

Application Number Title Priority Date Filing Date
CH870877A CH618517A5 (ja) 1976-08-18 1977-07-14

Country Status (12)

Country Link
US (1) US4144753A (ja)
JP (1) JPS6048691B2 (ja)
CA (1) CA1099384A (ja)
CH (1) CH618517A5 (ja)
DE (1) DE2637107C2 (ja)
DK (1) DK365677A (ja)
FR (1) FR2362401A2 (ja)
GB (1) GB1588182A (ja)
IT (1) IT1126792B (ja)
NL (1) NL7708711A (ja)
NO (1) NO145635C (ja)
SE (1) SE418014B (ja)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5420828B2 (ja) * 1972-06-09 1979-07-25
SU879306A2 (ru) * 1978-03-03 1981-11-07 Предприятие П/Я А-3570 Ультразвуковой частотно-импульсный расходомер
US5228347A (en) * 1991-10-18 1993-07-20 Ore International, Inc. Method and apparatus for measuring flow by using phase advance
US5604592A (en) * 1994-09-19 1997-02-18 Textron Defense Systems, Division Of Avco Corporation Laser ultrasonics-based material analysis system and method using matched filter processing
DK199901477A (da) * 1999-10-14 2001-04-15 Danfoss As Sende- og modtagekredsløb for ultralydsflowmåler

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022058A (en) * 1975-08-07 1977-05-10 Brown Alvin E Apparatus for determining the arrival time of alternating signals

Also Published As

Publication number Publication date
DE2637107B1 (de) 1978-01-12
SE418014B (sv) 1981-04-27
NO145635C (no) 1982-04-28
NO145635B (no) 1982-01-18
JPS6048691B2 (ja) 1985-10-29
DE2637107C2 (de) 1978-09-14
NO772573L (no) 1978-02-21
FR2362401B2 (ja) 1984-01-27
SE7709277L (sv) 1978-02-19
FR2362401A2 (fr) 1978-03-17
DK365677A (da) 1978-02-19
CA1099384A (en) 1981-04-14
US4144753A (en) 1979-03-20
IT1126792B (it) 1986-05-21
GB1588182A (en) 1981-04-15
JPS5323663A (en) 1978-03-04
NL7708711A (nl) 1978-02-21

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Legal Events

Date Code Title Description
PL Patent ceased