CA2044655C - Thermal type flowmeter - Google Patents

Thermal type flowmeter Download PDF

Info

Publication number
CA2044655C
CA2044655C CA002044655A CA2044655A CA2044655C CA 2044655 C CA2044655 C CA 2044655C CA 002044655 A CA002044655 A CA 002044655A CA 2044655 A CA2044655 A CA 2044655A CA 2044655 C CA2044655 C CA 2044655C
Authority
CA
Canada
Prior art keywords
downstream side
temperature
sensing element
side temperature
sensing
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.)
Expired - Lifetime
Application number
CA002044655A
Other languages
English (en)
French (fr)
Other versions
CA2044655A1 (en
Inventor
Naoki Matubara
Hiroyuki Katougi
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.)
Oval Engineering Co Ltd
Original Assignee
Oval 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
Application filed by Oval Engineering Co Ltd filed Critical Oval Engineering Co Ltd
Publication of CA2044655A1 publication Critical patent/CA2044655A1/en
Application granted granted Critical
Publication of CA2044655C publication Critical patent/CA2044655C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01F1/68—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
    • 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
    • G01F1/6847—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow where sensing or heating elements are not disturbing the fluid flow, e.g. elements mounted outside the flow duct

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
CA002044655A 1990-06-15 1991-06-14 Thermal type flowmeter Expired - Lifetime CA2044655C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2-63431 1990-06-15
JP1990063431U JPH086268Y2 (ja) 1990-06-15 1990-06-15 熱式流量計

Publications (2)

Publication Number Publication Date
CA2044655A1 CA2044655A1 (en) 1991-12-16
CA2044655C true CA2044655C (en) 2001-12-11

Family

ID=13229082

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002044655A Expired - Lifetime CA2044655C (en) 1990-06-15 1991-06-14 Thermal type flowmeter

Country Status (6)

Country Link
US (1) US5222395A (US06168776-20010102-C00028.png)
EP (1) EP0467430B1 (US06168776-20010102-C00028.png)
JP (1) JPH086268Y2 (US06168776-20010102-C00028.png)
KR (1) KR0184673B1 (US06168776-20010102-C00028.png)
CA (1) CA2044655C (US06168776-20010102-C00028.png)
DE (1) DE69106961T2 (US06168776-20010102-C00028.png)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2682349B2 (ja) * 1992-09-18 1997-11-26 株式会社日立製作所 空気流量計及び空気流量検出方法
DE4335332A1 (de) * 1993-10-18 1995-04-20 Bitop Gmbh Verfahren und Vorrichtung zur insbesondere nicht invasiven Ermittlung mindestens eines interessierenden Parameters eines Fluid-Rohr-Systems
KR970059713A (ko) * 1996-01-17 1997-08-12 가나이 쯔도무 발열 저항체 타입 공기 유속 측정 장치
US6038921A (en) 1997-10-15 2000-03-21 Mcmillan Company Mass flow sensor system for fast temperature sensing responses
US6198296B1 (en) 1999-01-14 2001-03-06 Burr-Brown Corporation Bridge sensor linearization circuit and method
US6474155B1 (en) * 1999-07-08 2002-11-05 Lockheed Martin Corporation Constant-temperature-difference flow sensor
US6681625B1 (en) * 2000-01-19 2004-01-27 Lockheed Martin Corporation Constant-temperature-difference bidirectional flow sensor
NL1014797C2 (nl) * 2000-03-30 2001-10-02 Berkin Bv Massadebietmeter.
JP2002310763A (ja) * 2001-04-13 2002-10-23 Kofurotsuku Kk 流量測定装置
JP3969167B2 (ja) * 2002-04-22 2007-09-05 三菱電機株式会社 流体流量測定装置
US6736005B2 (en) * 2002-05-28 2004-05-18 Mcmillan Company High accuracy measuring and control of low fluid flow rates
US7000464B2 (en) 2002-05-28 2006-02-21 Mcmillan Company Measuring and control of low fluid flow rates with heated conduit walls
KR100808860B1 (ko) * 2004-07-23 2008-03-03 삼성전자주식회사 가열조리장치
IL204752A (en) * 2010-03-25 2015-08-31 Vasa Applied Technologies Ltd METHOD AND DEVICE FOR MEASURING BODY LIQUID FLOWS IN SECTION
US20140251004A1 (en) * 2011-10-26 2014-09-11 Weatherford Canada Partnership Method and system for flow measurement
MX2018010592A (es) * 2016-03-02 2019-05-16 Watlow Electric Mfg Derivacion de flujo accionado por calentador.
CN107014452A (zh) * 2017-04-17 2017-08-04 西安电子科技大学 恒温差热式流量传感器的流量检测电路
US11587839B2 (en) 2019-06-27 2023-02-21 Analog Devices, Inc. Device with chemical reaction chamber
US11712516B2 (en) 2020-04-17 2023-08-01 Analog Devices, Inc. Fluid delivery device
CN112461310A (zh) * 2020-12-07 2021-03-09 中国石油天然气集团有限公司 一种温差流量传感器
US11604084B2 (en) 2021-04-15 2023-03-14 Analog Devices, Inc. Sensor package
US11796367B2 (en) 2021-05-07 2023-10-24 Analog Devices, Inc. Fluid control system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552017A (en) * 1947-04-26 1951-05-08 Wright Aeronautical Corp Flowmeter
US2726546A (en) * 1952-03-26 1955-12-13 Jr Robert W King Apparatus for measuring fluid flow
US3020760A (en) * 1957-10-31 1962-02-13 Flow Measurements Corp Flow cell
DE1905999A1 (de) * 1969-02-07 1970-09-03 Interatom Verfahren und Vorrichtung zur Messung der Durchflussmenge von Gasen und Fluessigkeiten
GB1352175A (en) * 1971-06-09 1974-05-08 Perkin Elmer Ltd Electrical flowmeters
US4255968A (en) * 1979-06-08 1981-03-17 Intek, Inc. Flow indicator
JPS6478116A (en) * 1987-09-19 1989-03-23 Univ Kyushu Measuring instrument for water flow rate in plant stem
US4843881A (en) * 1987-12-24 1989-07-04 Aalborg Instruments & Controls Fluid flow sensor system
JPH02141621A (ja) * 1988-11-22 1990-05-31 Oval Eng Co Ltd 熱式流量センサ
JPH03241312A (ja) * 1990-02-20 1991-10-28 Seiko Epson Corp 反射型液晶ライトバルブ

Also Published As

Publication number Publication date
JPH086268Y2 (ja) 1996-02-21
EP0467430B1 (en) 1995-01-25
KR920001181A (ko) 1992-01-30
US5222395A (en) 1993-06-29
JPH0421917U (US06168776-20010102-C00028.png) 1992-02-24
DE69106961D1 (de) 1995-03-09
CA2044655A1 (en) 1991-12-16
EP0467430A1 (en) 1992-01-22
KR0184673B1 (ko) 1999-05-15
DE69106961T2 (de) 1995-08-31

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