DE69430508T2 - Hitzdraht Luftdurchflussmesser - Google Patents

Hitzdraht Luftdurchflussmesser

Info

Publication number
DE69430508T2
DE69430508T2 DE69430508T DE69430508T DE69430508T2 DE 69430508 T2 DE69430508 T2 DE 69430508T2 DE 69430508 T DE69430508 T DE 69430508T DE 69430508 T DE69430508 T DE 69430508T DE 69430508 T2 DE69430508 T2 DE 69430508T2
Authority
DE
Germany
Prior art keywords
air flow
flow meter
hot wire
wire air
hot
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 - Fee Related
Application number
DE69430508T
Other languages
English (en)
Other versions
DE69430508D1 (de
Inventor
Takayuki Itsuji
Masuo Akamatsu
Hiroshi Yoneda
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.)
Hitachi Ltd
Hitachi Automotive Systems Engineering Co Ltd
Original Assignee
Hitachi Ltd
Hitachi Car 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 Hitachi Ltd, Hitachi Car Engineering Co Ltd filed Critical Hitachi Ltd
Publication of DE69430508D1 publication Critical patent/DE69430508D1/de
Application granted granted Critical
Publication of DE69430508T2 publication Critical patent/DE69430508T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • G01F1/698—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters
    • 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
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G01F1/6842—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow with means for influencing the 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
DE69430508T 1993-12-07 1994-11-22 Hitzdraht Luftdurchflussmesser Expired - Fee Related DE69430508T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30621693A JP3150510B2 (ja) 1993-12-07 1993-12-07 発熱抵抗式空気流量計

Publications (2)

Publication Number Publication Date
DE69430508D1 DE69430508D1 (de) 2002-06-06
DE69430508T2 true DE69430508T2 (de) 2002-11-14

Family

ID=17954392

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69430508T Expired - Fee Related DE69430508T2 (de) 1993-12-07 1994-11-22 Hitzdraht Luftdurchflussmesser

Country Status (5)

Country Link
US (1) US5537871A (de)
EP (1) EP0657722B1 (de)
JP (1) JP3150510B2 (de)
KR (1) KR100318039B1 (de)
DE (1) DE69430508T2 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3609148B2 (ja) * 1995-05-12 2005-01-12 株式会社日立製作所 発熱抵抗式空気流量計
JP3323745B2 (ja) 1996-07-25 2002-09-09 株式会社日立製作所 物理量検出装置の特性調整手段および発熱抵抗式空気流量装置
JP3300615B2 (ja) * 1996-11-19 2002-07-08 株式会社日立製作所 レシオメトリック出力型発熱抵抗体式空気流量計及び発熱抵抗体式空気流量計及びエンジン制御装置
DE19749524C2 (de) * 1997-11-08 1999-10-21 Reisland Martin Ulrich Einrichtung zum Messen des Volumenstromes eines strömenden Mediums
JP3394908B2 (ja) * 1998-06-03 2003-04-07 三菱電機株式会社 感熱式流量センサ
JP4390160B2 (ja) 1998-06-26 2009-12-24 住友電気工業株式会社 分割型光ファイバテープ心線の製造用一括被覆ダイス装置及び製造方法
US6512412B2 (en) * 1999-02-16 2003-01-28 Micron Technology, Inc. Temperature compensated reference voltage circuit
DE10003436B4 (de) * 1999-02-18 2009-08-13 Ifm Electronic Gmbh Wärmeübergangskontroll- und/oder -meßgerät
NL1014797C2 (nl) * 2000-03-30 2001-10-02 Berkin Bv Massadebietmeter.
DE10026002A1 (de) * 2000-05-25 2001-12-06 Bosch Gmbh Robert Vorrichtung zum Überwachen eines Gebläses in einem Gasheizgerät
KR20020080137A (ko) * 2001-04-11 2002-10-23 주식회사 쎄스텍 유량 계측용 센서 및 이를 이용한 질량유량제어장치 및 방법
JP4608843B2 (ja) * 2002-02-19 2011-01-12 株式会社デンソー 流量測定装置
CA2470217A1 (en) * 2003-06-06 2004-12-06 Ameriflo, Inc. Lighted fluid flow indication apparatus
US7051599B2 (en) * 2004-11-01 2006-05-30 Board Of Trustees Operating Michigan State University Thermal transient anemometer having sensing cell assembly
US9494470B2 (en) 2014-03-20 2016-11-15 Varian Semiconductor Equipment Associates, Inc. Thermistor based measurement system
CN104238608A (zh) * 2014-09-09 2014-12-24 江苏大学 一种全频域直流电压信号降压放大电路

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56112610A (en) * 1980-02-12 1981-09-05 Oval Eng Co Ltd Measuring device for gas
JPS5722563A (en) * 1980-07-15 1982-02-05 Hitachi Ltd Sucked air flowmeter for internal combustion engine
JPS57184923A (en) * 1981-04-30 1982-11-13 Hitachi Ltd Hot-wire type flowmeter
JPS60151517A (ja) * 1984-01-18 1985-08-09 Nippon Soken Inc 半導体式流量検出装置
JPH07117436B2 (ja) * 1990-12-28 1995-12-18 三菱電機株式会社 感熱式流量センサ
DE69232453T2 (de) * 1991-07-08 2002-07-18 Denso Corp Thermischer Durchflussmesser
US5141021A (en) * 1991-09-06 1992-08-25 Stec Inc. Mass flow meter and mass flow controller
GB9123893D0 (en) * 1991-11-11 1992-01-02 Lucas Ind Plc Hot wire flow rate measuring circuit

Also Published As

Publication number Publication date
DE69430508D1 (de) 2002-06-06
EP0657722B1 (de) 2002-05-02
EP0657722A2 (de) 1995-06-14
US5537871A (en) 1996-07-23
JPH07159214A (ja) 1995-06-23
KR950019643A (ko) 1995-07-24
EP0657722A3 (de) 1996-01-10
KR100318039B1 (ko) 2002-04-06
JP3150510B2 (ja) 2001-03-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee