JPS56148014A - Flow rate measuring apparatus - Google Patents

Flow rate measuring apparatus

Info

Publication number
JPS56148014A
JPS56148014A JP5142880A JP5142880A JPS56148014A JP S56148014 A JPS56148014 A JP S56148014A JP 5142880 A JP5142880 A JP 5142880A JP 5142880 A JP5142880 A JP 5142880A JP S56148014 A JPS56148014 A JP S56148014A
Authority
JP
Japan
Prior art keywords
flow rate
outputs
ranges
signal
transmitters
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.)
Granted
Application number
JP5142880A
Other languages
Japanese (ja)
Other versions
JPS605885B2 (en
Inventor
Tsugio Ito
Kazuhiko Morikawa
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.)
Azbil Corp
Original Assignee
Azbil Corp
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 Azbil Corp filed Critical Azbil Corp
Priority to JP5142880A priority Critical patent/JPS605885B2/en
Publication of JPS56148014A publication Critical patent/JPS56148014A/en
Publication of JPS605885B2 publication Critical patent/JPS605885B2/en
Expired 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
    • G01F1/05—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 mechanical effects
    • G01F1/34—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 mechanical effects by measuring pressure or differential pressure
    • G01F1/36—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 mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
    • G01F1/363—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 mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction with electrical or electro-mechanical indication

Landscapes

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

Abstract

PURPOSE:To permit a highly accurate flow rate measurement over a side range by a method wherein the signals, which are obtained by multiplying the respective outputs of a plurality of differential pressure type flow rate transmitters having different measuring ranges from each other and respective weight coeffcients, and the outputs of a group of standard signal generators are compared with each other to select and add together. CONSTITUTION:The outputs, which are obtained by multiplying the outputs of a plurality of differential pressure type flow rate transmitters DPT having different measuring range from each other and weight coefficients corresponding to respective signal ranges, and the outputs of standard signal generators SG are compared with each other to select in high-signal selectors HS and low-signal selectors LS. The outputs thereof are added in an adder ADD1, and the sum of the standard signals obtained in an adder ADD2 is subtracted therefrom in a subtractor SUB to a obtain the flow rate signal over the whole ranges. Thereby, the flow rate transmitters are automatically selected to use for respective measuring ranges in an analog operation manner. Accordingly, a highly accurate flow rate measurement can be performed over the whole ranges by using a comparatively simple apparatus.
JP5142880A 1980-04-18 1980-04-18 flow measuring device Expired JPS605885B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5142880A JPS605885B2 (en) 1980-04-18 1980-04-18 flow measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5142880A JPS605885B2 (en) 1980-04-18 1980-04-18 flow measuring device

Publications (2)

Publication Number Publication Date
JPS56148014A true JPS56148014A (en) 1981-11-17
JPS605885B2 JPS605885B2 (en) 1985-02-14

Family

ID=12886653

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5142880A Expired JPS605885B2 (en) 1980-04-18 1980-04-18 flow measuring device

Country Status (1)

Country Link
JP (1) JPS605885B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6061621U (en) * 1983-10-04 1985-04-30 株式会社　京浜精機製作所 Throttle type flow meter
JPS63111616U (en) * 1987-01-13 1988-07-18
FR2684444A1 (en) * 1991-12-02 1993-06-04 Comap METHOD AND DEVICE FOR MEASURING THE FLOW RATE OF CONDUITS TRANSPORTING A THERMAL CONTROL FLUID.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6061621U (en) * 1983-10-04 1985-04-30 株式会社　京浜精機製作所 Throttle type flow meter
JPS63111616U (en) * 1987-01-13 1988-07-18
FR2684444A1 (en) * 1991-12-02 1993-06-04 Comap METHOD AND DEVICE FOR MEASURING THE FLOW RATE OF CONDUITS TRANSPORTING A THERMAL CONTROL FLUID.

Also Published As

Publication number Publication date
JPS605885B2 (en) 1985-02-14

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