GB2449654B - Airflow sensor - Google Patents

Airflow sensor

Info

Publication number
GB2449654B
GB2449654B GB0710236A GB0710236A GB2449654B GB 2449654 B GB2449654 B GB 2449654B GB 0710236 A GB0710236 A GB 0710236A GB 0710236 A GB0710236 A GB 0710236A GB 2449654 B GB2449654 B GB 2449654B
Authority
GB
United Kingdom
Prior art keywords
airflow sensor
airflow
sensor
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
GB0710236A
Other versions
GB2449654A (en
GB0710236D0 (en
Inventor
Rod Hine
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.)
HAVGUARDIAN Ltd
Original Assignee
HAVGUARDIAN 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 HAVGUARDIAN Ltd filed Critical HAVGUARDIAN Ltd
Priority to GB0710236A priority Critical patent/GB2449654B/en
Publication of GB0710236D0 publication Critical patent/GB0710236D0/en
Publication of GB2449654A publication Critical patent/GB2449654A/en
Application granted granted Critical
Publication of GB2449654B publication Critical patent/GB2449654B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/008—Cooling means
    • 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
    • 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
    • G01F1/6888—Thermoelectric elements, e.g. thermocouples, thermopiles
    • 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
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
    • G01P13/006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using thermal variables
    • 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
    • G01P5/12—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 using variation of resistance of a heated conductor
GB0710236A 2007-05-30 2007-05-30 Airflow sensor Expired - Fee Related GB2449654B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0710236A GB2449654B (en) 2007-05-30 2007-05-30 Airflow sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0710236A GB2449654B (en) 2007-05-30 2007-05-30 Airflow sensor

Publications (3)

Publication Number Publication Date
GB0710236D0 GB0710236D0 (en) 2007-07-11
GB2449654A GB2449654A (en) 2008-12-03
GB2449654B true GB2449654B (en) 2011-07-06

Family

ID=38289479

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0710236A Expired - Fee Related GB2449654B (en) 2007-05-30 2007-05-30 Airflow sensor

Country Status (1)

Country Link
GB (1) GB2449654B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3061306B1 (en) * 2016-12-23 2019-08-16 Electricite De France SENSOR FOR MEASURING THE SPEED OF AN AIR FLOW, METHOD FOR MEASURING THE SPEED OF AN AIR FLOW USING THIS SENSOR AND INSTALLATION INCORPORATING SUCH A SENSOR
EP4060351A1 (en) * 2021-03-18 2022-09-21 Werme Patent AB Metering device for determining usage of a tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898638A (en) * 1973-08-09 1975-08-05 Robert A Deane Differential temperature sensor system and improvements in a fluid flow detector
GB1488012A (en) * 1975-09-18 1977-10-05 Hawker Siddeley Dynamics Eng Mass flow transducers
US20030097875A1 (en) * 2001-11-26 2003-05-29 Honeywell International Inc. Airflow sensor, system and method for detecting airflow within an air handling system
WO2007014400A2 (en) * 2005-07-27 2007-02-01 Center For Multidisciplinary Studies Of The Belgrade University Three dimensional anemometer comprising thick film segmented thermistors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898638A (en) * 1973-08-09 1975-08-05 Robert A Deane Differential temperature sensor system and improvements in a fluid flow detector
GB1488012A (en) * 1975-09-18 1977-10-05 Hawker Siddeley Dynamics Eng Mass flow transducers
US20030097875A1 (en) * 2001-11-26 2003-05-29 Honeywell International Inc. Airflow sensor, system and method for detecting airflow within an air handling system
WO2007014400A2 (en) * 2005-07-27 2007-02-01 Center For Multidisciplinary Studies Of The Belgrade University Three dimensional anemometer comprising thick film segmented thermistors

Also Published As

Publication number Publication date
GB2449654A (en) 2008-12-03
GB0710236D0 (en) 2007-07-11

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Legal Events

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

Effective date: 20111006