GB2022255A - Acoustic measuring instruments e.g. flowmeters - Google Patents

Acoustic measuring instruments e.g. flowmeters

Info

Publication number
GB2022255A
GB2022255A GB7916844A GB7916844A GB2022255A GB 2022255 A GB2022255 A GB 2022255A GB 7916844 A GB7916844 A GB 7916844A GB 7916844 A GB7916844 A GB 7916844A GB 2022255 A GB2022255 A GB 2022255A
Authority
GB
United Kingdom
Prior art keywords
signal
amplifier
occurrence
reference value
difference
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
GB7916844A
Other versions
GB2022255B (en
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.)
Fuji Electric Co Ltd
Ultrasonic Engineering Co Ltd
Original Assignee
Fuji Electric Co Ltd
Ultrasonic Engineering Co 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
Priority claimed from JP53057823A external-priority patent/JPS5914172B2/en
Priority claimed from JP53057822A external-priority patent/JPS5914171B2/en
Application filed by Fuji Electric Co Ltd, Ultrasonic Engineering Co Ltd filed Critical Fuji Electric Co Ltd
Publication of GB2022255A publication Critical patent/GB2022255A/en
Application granted granted Critical
Publication of GB2022255B publication Critical patent/GB2022255B/en
Expired 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
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters

Abstract

A measuring instrument comprising : means (13, 14) sending an acoustic signal through a fluid, for detecting its arrival and for supplying a first signal (H) in response to its arrival; timing means (1, 3), e.g. VC0(1) and counter (3), for producing a second signal (V) after a controllably variable interval; control means (8,32) for determining the time difference between the occurrence of said first signal (H) and the occurrence of said second signal (V) and for controlling said timing means (1,3) in a manner such as to tend to reduce said difference; an amplifier (7) for amplifying said first signal (H); an abnormality detector (31) arranged to produce a third signal (W) when the magnitude of the output signal (H) of the amplifier exceeds a first reference value; a mistrigger detector (41) arranged to compare said difference with a second reference value to produce a fourth signal (F) dependent on the result of that comparison and on the occurrence of said third signal (W); and an amplitude monitor (40) responsive to said fourth signal (F) and arranged to control the amplification factor of the amplifier (7) so that the maximum magnitude of the output signal of the amplifier becomes equal to either a third or a fourth reference value in dependence upon said fourth signal (F). <IMAGE>
GB7916844A 1978-05-16 1979-05-15 Acoustic measuring instruments eg flowmeters Expired GB2022255B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP53057823A JPS5914172B2 (en) 1978-05-16 1978-05-16 Ultrasonic measuring device
JP53057822A JPS5914171B2 (en) 1978-05-16 1978-05-16 Ultrasonic measuring device

Publications (2)

Publication Number Publication Date
GB2022255A true GB2022255A (en) 1979-12-12
GB2022255B GB2022255B (en) 1982-09-15

Family

ID=26398907

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7916844A Expired GB2022255B (en) 1978-05-16 1979-05-15 Acoustic measuring instruments eg flowmeters

Country Status (5)

Country Link
DE (1) DE2920176A1 (en)
DK (1) DK200679A (en)
FR (1) FR2426246A1 (en)
GB (1) GB2022255B (en)
NL (1) NL7903822A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0407676A1 (en) * 1989-07-14 1991-01-16 Haiges Elektronik Gmbh Method for measuring the time differences among the ultrasound signals belonging to a group, and apparatus for carrying out the method
FR2803383A1 (en) * 1999-12-29 2001-07-06 Schlumberger Ind Sa METHOD AND DEVICE FOR DETECTING DYSFUNCTION FOR ULTRASONIC FLOWMETER
WO2011134470A3 (en) * 2010-04-28 2012-08-16 Miitors Aps Ultrasonic flow meter
CN107607168A (en) * 2017-07-25 2018-01-19 辽宁航宇星物联仪表科技有限公司 A kind of family ultrasonic water meter adaptive approach

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4452090A (en) * 1982-05-17 1984-06-05 Airco, Inc. Ultrasonic flowmeter
DE4114233C2 (en) * 1991-04-26 1996-05-02 Flexim Flexible Industriemeste Arrangement for ultrasonic flow measurement
DE102013013927A1 (en) * 2013-08-21 2015-02-26 Acam-Messelectronic Gmbh Method and device for measuring the flow rate of a liquid by means of ultrasound

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3569827A (en) * 1965-11-16 1971-03-09 Nasa Apparatus for detecting the amount of material in a resonant cavity container
US3894431A (en) * 1972-04-04 1975-07-15 Atomic Energy Authority Uk Apparatus for indicating fluid flow velocity
US3818757A (en) * 1972-05-05 1974-06-25 Saratoga Sys Inc Dual path ultrasonic fluid flow metering system and method
US4080574A (en) * 1974-01-31 1978-03-21 United Kingdom Atomic Energy Authority Apparatus for providing time reference signals
JPS5310454A (en) * 1976-07-16 1978-01-30 Nippon Kokan Kk Apparatus for detecting change of fluid character by singgaround method
DE2641771A1 (en) * 1976-09-14 1978-03-16 Fuji Electric Co Ltd Time difference measuring device - compares measured time difference and reference value for ultrasonic velocimeter
DE2641772A1 (en) * 1976-09-14 1978-03-16 Fuji Electric Co Ltd Throughflow or current measuring instrument - has time-difference measuring instrument detecting oscillator pulses and further pulses
JPS5829854B2 (en) * 1977-07-26 1983-06-25 富士電機株式会社 Ultrasonic measuring device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0407676A1 (en) * 1989-07-14 1991-01-16 Haiges Elektronik Gmbh Method for measuring the time differences among the ultrasound signals belonging to a group, and apparatus for carrying out the method
FR2803383A1 (en) * 1999-12-29 2001-07-06 Schlumberger Ind Sa METHOD AND DEVICE FOR DETECTING DYSFUNCTION FOR ULTRASONIC FLOWMETER
WO2001050095A1 (en) * 1999-12-29 2001-07-12 Schlumberger Industries, S.A. Method and device for detecting a dysfunction of an ultrasonic flowmeter
US6766276B1 (en) 1999-12-29 2004-07-20 Actaris S.A.S. Method and device for detecting a dysfunction of an ulatrasonic flowmeter
WO2011134470A3 (en) * 2010-04-28 2012-08-16 Miitors Aps Ultrasonic flow meter
US9383239B2 (en) 2010-04-28 2016-07-05 Apator Miitors Aps Ultrasonic flow meter with subsampling of ultrasonic transducer signals
US10605646B2 (en) 2010-04-28 2020-03-31 Apator Miitors Aps Ultrasonic flow meter with subsampling of ultrasonic transducer signals
US11243109B2 (en) 2010-04-28 2022-02-08 Apator Miitors Aps Ultrasonic flow meter with subsampling of ultrasonic transducer signals
EP4296630A3 (en) * 2010-04-28 2024-04-03 Apator Miitors ApS Ultrasonic flow meter
CN107607168A (en) * 2017-07-25 2018-01-19 辽宁航宇星物联仪表科技有限公司 A kind of family ultrasonic water meter adaptive approach

Also Published As

Publication number Publication date
FR2426246A1 (en) 1979-12-14
GB2022255B (en) 1982-09-15
DK200679A (en) 1979-11-17
NL7903822A (en) 1979-11-20
DE2920176A1 (en) 1979-11-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee