DK0460044T3 - Flowmeter - Google Patents

Flowmeter

Info

Publication number
DK0460044T3
DK0460044T3 DK90903878.8T DK90903878T DK0460044T3 DK 0460044 T3 DK0460044 T3 DK 0460044T3 DK 90903878 T DK90903878 T DK 90903878T DK 0460044 T3 DK0460044 T3 DK 0460044T3
Authority
DK
Denmark
Prior art keywords
temperature
heater
pct
fluid
rate
Prior art date
Application number
DK90903878.8T
Other languages
English (en)
Inventor
Christopher John Gimson
Mehran Pasdari
Original Assignee
Endress & Hauser 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 Endress & Hauser Ltd filed Critical Endress & Hauser Ltd
Application granted granted Critical
Publication of DK0460044T3 publication Critical patent/DK0460044T3/da

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
    • G01F1/68—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 using thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • 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
    • G01F1/68—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 using thermal effects
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • G01F1/6965—Circuits therefor, e.g. constant-current flow meters comprising means to store calibration data for flow signal calculation or correction
    • 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
    • G01F1/68—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 using thermal effects
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • G01F1/698—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters
    • G01F1/6986—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters with pulsed heating, e.g. dynamic methods

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Details Of Flowmeters (AREA)
  • Fuel-Injection Apparatus (AREA)
DK90903878.8T 1989-02-18 1990-02-16 Flowmeter DK0460044T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898903744A GB8903744D0 (en) 1989-02-18 1989-02-18 Flowmeter

Publications (1)

Publication Number Publication Date
DK0460044T3 true DK0460044T3 (da) 1994-09-05

Family

ID=10651942

Family Applications (1)

Application Number Title Priority Date Filing Date
DK90903878.8T DK0460044T3 (da) 1989-02-18 1990-02-16 Flowmeter

Country Status (10)

Country Link
US (1) US5339687A (da)
EP (1) EP0460044B1 (da)
JP (1) JP2918062B2 (da)
AT (1) ATE109273T1 (da)
AU (1) AU5165690A (da)
CA (1) CA2047735C (da)
DE (1) DE69011099T2 (da)
DK (1) DK0460044T3 (da)
GB (2) GB8903744D0 (da)
WO (1) WO1990009567A1 (da)

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US5582628A (en) * 1991-05-29 1996-12-10 Wood; Tony J. Unit and system for sensing fluid velocity
GB2283328B (en) * 1993-10-26 1998-03-25 Stephen David Marshall Fluid speed monitor
US5525040A (en) * 1994-03-31 1996-06-11 B&B Financial Planning Inc. Controller for oil wells with a thermal dispersion probe
AU2198697A (en) * 1996-03-08 1997-09-22 Holometrix, Inc. Heat flow meter instruments
US5804712A (en) * 1996-09-27 1998-09-08 Brunswick Corporation Oil flow sensor
WO1999038356A1 (en) * 1998-01-23 1999-07-29 Lufran Incorporated Demand anticipation control system for a high efficiency ultra-pure fluid heater
DE19913968B4 (de) 1999-03-18 2004-02-12 Fafnir Gmbh Thermischer Durchflußsensor und Verfahren zum Bestimmen des Durchflusses eines Fluids
DE10082701D2 (de) * 1999-09-09 2002-08-14 Sensirion Ag Zuerich Verfahren und Vorrichtung zur Präzisions-Massenflussmessung
US6658931B1 (en) 2000-03-13 2003-12-09 Honeywell International Inc. Fluid flow sensing and control method and apparatus
RU2195634C2 (ru) * 2000-07-24 2002-12-27 Межрегиональное открытое акционерное общество "Нефтеавтоматика" Калориметрический способ измерения расхода
GB2375401A (en) * 2001-05-03 2002-11-13 Endress & Hauser Ltd A flow meter incorporating thermal loss sensors and an installation adapter to provide known flow conditions upstream of the flow meter
DE10251891B4 (de) * 2002-10-07 2007-07-26 Wagner Alarm- Und Sicherungssysteme Gmbh Vorrichtung zur Bestimmung von Strömungsgrößen sowie Verfahren zum Betrieb einer solchen Vorrichtung
US7162374B2 (en) 2002-10-07 2007-01-09 Wagner Alarm-Und Sicherungssysteme Gmbh Device for the determination of flow parameters for a fluid and method for operating such a device
EP1426740B1 (de) * 2002-11-27 2014-11-19 Sensirion Holding AG Vorrichtung zur Messung des Flusses und mindestens eines Materialparameters eines Fluids
NL1023405C2 (nl) * 2003-05-13 2004-11-18 Berkin Bv Massadebietmeter.
US7191645B2 (en) * 2003-08-14 2007-03-20 Fluid Components International Llc Dynamic mixed gas flowmeter
US7201033B2 (en) * 2003-08-14 2007-04-10 Fluid Components International Llc Flowmeter in-situ calibration verification system
GB2416394B (en) * 2004-07-17 2006-11-22 Sensor Highway Ltd Method and apparatus for measuring fluid properties
DE102007010912A1 (de) * 2007-03-05 2008-09-11 Endress + Hauser Flowtec Ag Vorrichtung zur Bestimmung und/oder Überwachung des Massedurchflusses eines gasförmigen Mediums
US7387022B1 (en) 2007-05-02 2008-06-17 Honeywell International Inc. Thermal mass flow transducer including PWM-type heater current driver
DE102007023823B4 (de) * 2007-05-21 2014-12-18 Abb Ag Thermischer Massendurchflussmesser und Verfahren zu seinem Betrieb
US7841769B2 (en) * 2007-09-11 2010-11-30 Gm Global Technology Operations, Inc. Method and apparatus for determining temperature in a gas feedstream
EP2037233A1 (en) 2007-09-14 2009-03-18 General Electric Company Fluid detector
US7874208B2 (en) * 2007-10-10 2011-01-25 Brooks Instrument, Llc System for and method of providing a wide-range flow controller
DE102007057027B4 (de) * 2007-11-27 2017-12-21 Drägerwerk AG & Co. KGaA Vorrichtung und Verfahren zur Messung der Strömungsgeschwindigkeit eines Fluids
EP2175246B1 (en) 2008-10-09 2017-07-19 Sensirion AG A method for measuring a fluid composition parameter by means of a flow sensor
EP2204555B1 (en) * 2009-01-02 2011-08-03 Sensirion AG Ammonia storage system
EP2436079A2 (en) * 2009-05-28 2012-04-04 Deeya Energy, Inc. Redox flow cell rebalancing
US20110079074A1 (en) * 2009-05-28 2011-04-07 Saroj Kumar Sahu Hydrogen chlorine level detector
EP2330391A1 (en) 2009-12-02 2011-06-08 ABB Research Ltd. Flowmeters and methods for diagnosis of sensor units
EP2392898B1 (en) 2010-06-04 2017-12-13 Sensirion AG Sensor system
US8593251B2 (en) * 2011-06-16 2013-11-26 Alan Camerik Heller Systems for detecting a febrile condition and reducing risks of spreading infection
US8686863B2 (en) * 2011-06-16 2014-04-01 Alan C. Heller System and process for detecting a febrile condition
DE102011051931A1 (de) 2011-07-19 2013-01-24 Aixtron Se Vorrichtung und Verfahren zum Bestimmen des Dampfdrucks eines in einem Trägergasstrom verdampften Ausgangsstoffes
DE102012001060A1 (de) * 2011-10-24 2013-04-25 Hydrometer Gmbh Verfahren zur Korrektur von Offset-Drift-Effekten einer thermischen Messeinrichtung, thermische Messeinrichtung und Gasdurchflussmessgerät
US12239419B2 (en) 2011-11-04 2025-03-04 Alan C. Heller Systems for real time febrility detection and notification
DE102012112314A1 (de) * 2012-12-14 2014-06-18 Endress + Hauser Flowtec Ag Thermisches Durchflussmessgerät
DE102013110487A1 (de) 2012-12-14 2014-07-17 Endress + Hauser Flowtec Ag Thermisches Durchflussmessgerät
DE102016105501A1 (de) * 2016-03-23 2017-09-28 Bundesrepublik Deutschland, Vertreten Durch Das Bundesministerium Für Wirtschaft Und Energie, Dieses Vertreten Durch Den Präsidenten Der Physikalisch-Technischen Bundesanstalt Durchflussmessvorrichtung zum Messen eines Durchflussparameters eines Fluids und Verfahren zur Durchflussmessung
DE102016108688B3 (de) * 2016-05-11 2017-07-06 Bundesrepublik Deutschland, Vertreten Durch Das Bundesministerium Für Wirtschaft Und Energie, Dieses Vertreten Durch Den Präsidenten Der Physikalisch-Technischen Bundesanstalt Verfahren zum Bestimmen einer Durchflussgeschwindigkeit eines Fluids und Durchflussmessgerät
CN109937349B (zh) * 2016-09-21 2021-01-01 Fci国际公司 使用热分散技术的质量流量计
EP3899445B1 (en) * 2018-12-20 2024-12-25 Becton, Dickinson And Company Thermal mass fluid flow sensor
US12078555B2 (en) * 2020-04-17 2024-09-03 Telligent Metrics LLC Thermistor based respiration measurement
EP3933352A1 (de) * 2020-07-01 2022-01-05 Sick Ag Thermische durchflussmessung
CN114563053B (zh) * 2022-02-24 2025-05-13 苏州敏芯微电子技术股份有限公司 流体传输管路及流量测量方法
CN116222677A (zh) * 2022-12-12 2023-06-06 重庆川仪自动化股份有限公司 一种热式流量计自适应切换电路及方法
TWI882857B (zh) * 2024-07-05 2025-05-01 桓達科技股份有限公司 流速檢測裝置以及方法
DE102024128145A1 (de) * 2024-09-27 2026-04-02 Endress+Hauser Wetzer Gmbh+Co. Kg Thermisches Durchflussmessgerät und Verfahren zum Betreiben eines solchen thermischen Durchflussmessgeräts

Family Cites Families (9)

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US1254374A (en) * 1916-06-27 1918-01-22 Carl C Thomas Meter.
US1769358A (en) * 1922-04-01 1930-07-01 Cutler Hammer Inc Method of and apparatus for ascertaining the rate of flow of fluids
US3056295A (en) * 1955-07-08 1962-10-02 Laub John Harry Flow meter
DE3309404A1 (de) * 1983-03-16 1984-09-20 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zur messung des massendurchsatzes eines stroemenden mediums
US4691566A (en) * 1984-12-07 1987-09-08 Aine Harry E Immersed thermal fluid flow sensor
US4733559A (en) * 1983-12-01 1988-03-29 Harry E. Aine Thermal fluid flow sensing method and apparatus for sensing flow over a wide range of flow rates
CA1255923A (en) * 1985-12-23 1989-06-20 Dimitri Petrov Non-obstructive thermodynamic flow meter
DE3802422A1 (de) * 1988-01-28 1989-08-03 Pierburg Gmbh Verfahren und einrichtung zum bestimmen des luftmassenstroms
US4872339A (en) * 1988-08-03 1989-10-10 Nec Electronics Inc. Mass flow meter

Also Published As

Publication number Publication date
EP0460044A1 (en) 1991-12-11
GB9116252D0 (en) 1991-09-11
JPH04505211A (ja) 1992-09-10
DE69011099T2 (de) 1994-12-01
GB8903744D0 (en) 1989-04-05
EP0460044B1 (en) 1994-07-27
CA2047735A1 (en) 1990-08-19
GB2245073A (en) 1991-12-18
DE69011099D1 (de) 1994-09-01
WO1990009567A1 (en) 1990-08-23
AU5165690A (en) 1990-09-05
ATE109273T1 (de) 1994-08-15
US5339687A (en) 1994-08-23
JP2918062B2 (ja) 1999-07-12
CA2047735C (en) 1999-11-09
GB2245073B (en) 1993-05-19

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