JPS56132524A - Gas flow measuring device - Google Patents

Gas flow measuring device

Info

Publication number
JPS56132524A
JPS56132524A JP3661580A JP3661580A JPS56132524A JP S56132524 A JPS56132524 A JP S56132524A JP 3661580 A JP3661580 A JP 3661580A JP 3661580 A JP3661580 A JP 3661580A JP S56132524 A JPS56132524 A JP S56132524A
Authority
JP
Japan
Prior art keywords
supporter
temperature dependence
resistance wire
wound around
supporters
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
JP3661580A
Other languages
Japanese (ja)
Inventor
Tokio Kohama
Hideki Obayashi
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 JP3661580A priority Critical patent/JPS56132524A/en
Priority to US06/188,021 priority patent/US4357830A/en
Publication of JPS56132524A publication Critical patent/JPS56132524A/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
    • 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
    • G01F1/696—Circuits therefor, e.g. constant-current flow meters
    • G01F1/698—Feedback or rebalancing circuits, e.g. self heated constant temperature flowmeters

Abstract

PURPOSE:To improve a measurement precision of a quantity of flow and to facilitate manufacturing, by a method wherein a device, in which the first temperature dependence resistance and a resistance wire for electric heater are wound around an electric insulation supporter, and a device, in which the second temperature dependence resistance is wound around the same supporter, are mounted. CONSTITUTION:A resistance wire 10 for electric heater, made of platinum, and the first temperature dependence resistance wire 11 are alternately wound at close spaces around a supporter 101, such as ceramic having a cruciform section. The second temperature dependence resistance wire 12 is wound around a supporter 102 in a manner described above. Parts of the resistances 10-12 are secured with adhesives on the supporters 101 and 102, and are connected to a measurement circuit through copper foils 103-105'. The two supporters 101 and 102 are positioned in parallel to a flow (arrow mark B) of air or other fluids, and the second supporter 102 is positioned at the upstream of the first supporter 101. A bridge circuit consists of the resistances 11 and 12 and two references, and is connected to a measurement circuit consisting of a differential amplifier. This permits the improvement of a measurement precision and enables facilitation of manufacturing.
JP3661580A 1979-09-21 1980-03-21 Gas flow measuring device Pending JPS56132524A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3661580A JPS56132524A (en) 1980-03-21 1980-03-21 Gas flow measuring device
US06/188,021 US4357830A (en) 1979-09-21 1980-09-17 Gas flow measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3661580A JPS56132524A (en) 1980-03-21 1980-03-21 Gas flow measuring device

Publications (1)

Publication Number Publication Date
JPS56132524A true JPS56132524A (en) 1981-10-16

Family

ID=12474704

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3661580A Pending JPS56132524A (en) 1979-09-21 1980-03-21 Gas flow measuring device

Country Status (1)

Country Link
JP (1) JPS56132524A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5474779A (en) * 1977-11-05 1979-06-15 Bosch Gmbh Robert Sonde having at least one electric resistance relating to temperature to measure flow rate of medium

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5474779A (en) * 1977-11-05 1979-06-15 Bosch Gmbh Robert Sonde having at least one electric resistance relating to temperature to measure flow rate of medium

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