DK0496953T3 - Flow Volume Meter for Liquid Media - Google Patents

Flow Volume Meter for Liquid Media

Info

Publication number
DK0496953T3
DK0496953T3 DK91118115.4T DK91118115T DK0496953T3 DK 0496953 T3 DK0496953 T3 DK 0496953T3 DK 91118115 T DK91118115 T DK 91118115T DK 0496953 T3 DK0496953 T3 DK 0496953T3
Authority
DK
Denmark
Prior art keywords
pulse
measurement
measuring
pulse generator
frequency
Prior art date
Application number
DK91118115.4T
Other languages
Danish (da)
Inventor
Juergen Merkel
Original Assignee
Landis & Gyr Tech Innovat
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 Landis & Gyr Tech Innovat filed Critical Landis & Gyr Tech Innovat
Application granted granted Critical
Publication of DK0496953T3 publication Critical patent/DK0496953T3/en

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
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Steroid Compounds (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Flow Control (AREA)
  • Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Measuring Volume Flow (AREA)

Abstract

In an electronic ultrasonic volume throughput meter for fluid media, a pulse generator (14) generating a frequency (f0) repeatedly triggers a measuring cycle which consists of a transmitting phase, a receiving phase and a calibration phase during which a change-over switch (18) exhibits different positions (a, b, c). When activated by a control element (9), a pulse generator (43) generates a measuring pulse which can be switched to at least one of the measurement transducers (6, 7) by the change-over switch (18) in its third switch position (c). A counter (42) starts due to the rising edge of the measuring pulse generated by the pulse transmitter (43), after the start counts the number of wave trains of a frequency (f2) sent by a scanning generator (11) and stops due to the rising edge of the measurement pulse received after it has passed through a measuring tube (2) from one of the measurement transducers (6, 7). The result of the count (NT) is proportional to the velocity of sound (vs). The pulse generator (14) is activated via a squaring element (51) by the result of the count (NT) of the counter (42), and this varies the frequency (f0) of the pulse generator (14). As a result, the velocity of sound (vs) is taken into consideration in the measurement of the volume throughput. <IMAGE>
DK91118115.4T 1991-01-29 1991-10-24 Flow Volume Meter for Liquid Media DK0496953T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH27391 1991-01-29

Publications (1)

Publication Number Publication Date
DK0496953T3 true DK0496953T3 (en) 1996-10-21

Family

ID=4183250

Family Applications (1)

Application Number Title Priority Date Filing Date
DK91118115.4T DK0496953T3 (en) 1991-01-29 1991-10-24 Flow Volume Meter for Liquid Media

Country Status (4)

Country Link
EP (1) EP0496953B1 (en)
AT (1) ATE138735T1 (en)
DE (1) DE59107864D1 (en)
DK (1) DK0496953T3 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2077495A (en) * 1995-03-28 1996-10-16 Cyril Ward Nugent Flow measuring apparatus
DE19530054C2 (en) * 1995-08-16 1999-06-17 Hydrometer Gmbh Method for ultrasound measurement of flow rates of flowing fluids
EP2339301A1 (en) * 2009-12-23 2011-06-29 Kamstrup A/S Ultrasonic flowmeter with simultaneously driven ultrasonic transducers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2077968A1 (en) * 1970-02-27 1971-11-05 Thomson Csf
CH604133A5 (en) * 1977-05-10 1978-08-31 Landis & Gyr Ag
JPS5827018A (en) * 1981-08-11 1983-02-17 Fuji Electric Co Ltd Ultrasonic wave flow rate measuring device
FR2551204B1 (en) * 1983-04-12 1987-07-31 Faes Yves METHOD AND DEVICE FOR MEASURING THE TIME OF PROPAGATION OF A WAVE IN A FLOW AND APPLICATION TO A METHOD OF DETERMINING THE SPEED OF THIS FLOW
CH670506A5 (en) * 1986-06-17 1989-06-15 Landis & Gyr Gmbh
CH672187A5 (en) * 1986-10-23 1989-10-31 Landis & Gyr Gmbh

Also Published As

Publication number Publication date
EP0496953B1 (en) 1996-05-29
EP0496953A1 (en) 1992-08-05
ATE138735T1 (en) 1996-06-15
DE59107864D1 (en) 1996-07-04

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