JPS5773621A - Measuring device for quantity of air flow - Google Patents

Measuring device for quantity of air flow

Info

Publication number
JPS5773621A
JPS5773621A JP55149815A JP14981580A JPS5773621A JP S5773621 A JPS5773621 A JP S5773621A JP 55149815 A JP55149815 A JP 55149815A JP 14981580 A JP14981580 A JP 14981580A JP S5773621 A JPS5773621 A JP S5773621A
Authority
JP
Japan
Prior art keywords
temperature
dependent resistance
resistance wire
wire
supports
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.)
Pending
Application number
JP55149815A
Other languages
Japanese (ja)
Inventor
Hideki Obayashi
Tokio Kohama
Hisashi Kawai
Tsuneyuki Egami
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.)
Soken Inc
Original Assignee
Nippon Soken Inc
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 Nippon Soken Inc filed Critical Nippon Soken Inc
Priority to JP55149815A priority Critical patent/JPS5773621A/en
Priority to US06/312,983 priority patent/US4471655A/en
Publication of JPS5773621A publication Critical patent/JPS5773621A/en
Pending 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To improve the precision and response of an air-flow-rate measuring device by winding a thermoelectric heater wire and a temperature dependent resistance wire around the 1st supporter and a temperature-dependent resistance wire around the 2nd supporter while contact parts are reduced. CONSTITUTION:In a flow-rate measurement tube where gas to be measured flows, two supports each made of an electric insulator are provided, and each support is equipped with support rods; and one support is wound with a thermoelectric heater wire and a temperature-dependent resistance wire, and the other with only a temperature-dependent resistance body whike contact parts are reduced. For example, supports 18 and 19 each having four support rods 182 and 192 are arranged in a measurement tube; the former is wound with a thermoelectric heater wire 12 and a temperature-dependent resistance wire 13, and the latter with a temperature-dependent resistance wire 14 as shown in the figure. Consequently, the thermal loss from a heater to the supports is reduced, and from the current value for heating the heater required to hold constant atemperature difference between the temperature- dependent resistance wires, the quantity of air flow is measured with excellent precision and response.
JP55149815A 1980-10-24 1980-10-24 Measuring device for quantity of air flow Pending JPS5773621A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP55149815A JPS5773621A (en) 1980-10-24 1980-10-24 Measuring device for quantity of air flow
US06/312,983 US4471655A (en) 1980-10-24 1981-10-20 Gas flow rate measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55149815A JPS5773621A (en) 1980-10-24 1980-10-24 Measuring device for quantity of air flow

Publications (1)

Publication Number Publication Date
JPS5773621A true JPS5773621A (en) 1982-05-08

Family

ID=15483304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55149815A Pending JPS5773621A (en) 1980-10-24 1980-10-24 Measuring device for quantity of air flow

Country Status (1)

Country Link
JP (1) JPS5773621A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58178630U (en) * 1982-05-26 1983-11-29 日本電子機器株式会社 hot wire flowmeter
JPS58178631U (en) * 1982-05-26 1983-11-29 日本電子機器株式会社 hot wire flowmeter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58178630U (en) * 1982-05-26 1983-11-29 日本電子機器株式会社 hot wire flowmeter
JPS58178631U (en) * 1982-05-26 1983-11-29 日本電子機器株式会社 hot wire flowmeter

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