LT3493B - Mass flowmeter for measuring the velocity of a flowing fluid - Google Patents

Mass flowmeter for measuring the velocity of a flowing fluid Download PDF

Info

Publication number
LT3493B
LT3493B LTIP783A LTIP783A LT3493B LT 3493 B LT3493 B LT 3493B LT IP783 A LTIP783 A LT IP783A LT IP783 A LTIP783 A LT IP783A LT 3493 B LT3493 B LT 3493B
Authority
LT
Lithuania
Prior art keywords
sensor
flow
fluid
heat
temperature
Prior art date
Application number
LTIP783A
Other languages
English (en)
Lithuanian (lt)
Inventor
Brian Ellis Mickler
Original Assignee
Mickler Brian E
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 Mickler Brian E filed Critical Mickler Brian E
Publication of LTIP783A publication Critical patent/LTIP783A/xx
Publication of LT3493B publication Critical patent/LT3493B/lt

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
    • G01F1/56—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 electric or magnetic effects
    • G01F1/64—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 electric or magnetic effects by measuring electrical currents passing through the fluid flow; measuring electrical potential generated by the fluid flow, e.g. by electrochemical, contact or friction 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
    • 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
    • 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
    • G01F1/688—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element
    • G01F1/69—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow using a particular type of heating, cooling or sensing element of resistive type
    • G01F1/692—Thin-film arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/10—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring thermal variables

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Measuring Volume Flow (AREA)
  • Details Of Flowmeters (AREA)
  • Control Of Combustion (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)
  • Catalysts (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
LTIP783A 1988-06-27 1993-07-13 Mass flowmeter for measuring the velocity of a flowing fluid LT3493B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/211,891 US4876887A (en) 1988-06-27 1988-06-27 Thermal flux mass flowmeter

Publications (2)

Publication Number Publication Date
LTIP783A LTIP783A (en) 1995-01-31
LT3493B true LT3493B (en) 1995-11-27

Family

ID=22788714

Family Applications (1)

Application Number Title Priority Date Filing Date
LTIP783A LT3493B (en) 1988-06-27 1993-07-13 Mass flowmeter for measuring the velocity of a flowing fluid

Country Status (16)

Country Link
US (1) US4876887A (fr)
EP (1) EP0349174B1 (fr)
JP (1) JPH0778439B2 (fr)
KR (1) KR0151723B1 (fr)
AT (1) ATE99412T1 (fr)
AU (1) AU608716B2 (fr)
CA (1) CA1326557C (fr)
DE (1) DE68911767T2 (fr)
ES (1) ES2049817T3 (fr)
IL (1) IL90692A0 (fr)
LT (1) LT3493B (fr)
LV (1) LV10981B (fr)
MD (1) MD1014G2 (fr)
RU (1) RU2087870C1 (fr)
UA (1) UA25921A1 (fr)
ZA (1) ZA894318B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5780736A (en) * 1996-11-27 1998-07-14 Sierra Instruments, Inc. Axial thermal mass flowmeter
US6257354B1 (en) 1998-11-20 2001-07-10 Baker Hughes Incorporated Drilling fluid flow monitoring system
US6776817B2 (en) * 2001-11-26 2004-08-17 Honeywell International Inc. Airflow sensor, system and method for detecting airflow within an air handling system
US7874208B2 (en) * 2007-10-10 2011-01-25 Brooks Instrument, Llc System for and method of providing a wide-range flow controller
US9134186B2 (en) * 2011-02-03 2015-09-15 Kla-Tencor Corporation Process condition measuring device (PCMD) and method for measuring process conditions in a workpiece processing tool configured to process production workpieces
US9243943B2 (en) * 2013-04-10 2016-01-26 International Business Machines Corporation Air-flow sensor for adapter slots in a data processing system
GB2553681B (en) 2015-01-07 2019-06-26 Homeserve Plc Flow detection device
GB201501935D0 (en) 2015-02-05 2015-03-25 Tooms Moore Consulting Ltd And Trow Consulting Ltd Water flow analysis

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517838A (en) 1982-11-12 1985-05-21 Ohkura Electric Co., Ltd. Thermal mass flow meter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451022A2 (fr) * 1979-03-08 1980-10-03 Onera (Off Nat Aerospatiale) Perfectionnements aux procedes et dispositifs de mesure de debit de fluide
US4245503A (en) * 1979-08-23 1981-01-20 Teledyne, Inc. Thermal flowmeter
DE3035769A1 (de) * 1980-09-23 1982-05-06 Degussa Ag, 6000 Frankfurt Vorrichtung zur messung der stroemungsgeschwindigkeit von gasen und fluessigkeiten
JPS6053813A (ja) * 1983-09-02 1985-03-27 Nippon Denso Co Ltd 熱式空気流量検出装置
US4691566A (en) * 1984-12-07 1987-09-08 Aine Harry E Immersed thermal fluid flow sensor
JPS61274222A (ja) * 1985-05-30 1986-12-04 Sharp Corp 流量センサ
US4735082A (en) * 1986-07-14 1988-04-05 Hewlett-Packard Company Pulse modulated thermal conductivity detector
US4735086A (en) * 1987-06-26 1988-04-05 Ford Motor Company Thick film mass airflow meter with minimal thermal radiation loss

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4517838A (en) 1982-11-12 1985-05-21 Ohkura Electric Co., Ltd. Thermal mass flow meter

Also Published As

Publication number Publication date
DE68911767T2 (de) 1994-04-28
JPH0245715A (ja) 1990-02-15
ZA894318B (en) 1990-02-28
IL90692A0 (en) 1990-01-18
KR0151723B1 (ko) 1998-12-01
ATE99412T1 (de) 1994-01-15
LV10981B (en) 1996-04-20
AU608716B2 (en) 1991-04-11
RU2087870C1 (ru) 1997-08-20
JPH0778439B2 (ja) 1995-08-23
KR900000686A (ko) 1990-01-31
AU3637989A (en) 1990-01-04
LV10981A (lv) 1995-12-20
EP0349174B1 (fr) 1993-12-29
DE68911767D1 (de) 1994-02-10
CA1326557C (fr) 1994-01-25
US4876887A (en) 1989-10-31
MD1014G2 (ro) 1999-04-30
ES2049817T3 (es) 1994-05-01
MD950066A (ro) 1995-11-30
UA25921A1 (uk) 1999-02-26
EP0349174A1 (fr) 1990-01-03
LTIP783A (en) 1995-01-31

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