JPS56129814A - Micro-flowmeter - Google Patents

Micro-flowmeter

Info

Publication number
JPS56129814A
JPS56129814A JP3309580A JP3309580A JPS56129814A JP S56129814 A JPS56129814 A JP S56129814A JP 3309580 A JP3309580 A JP 3309580A JP 3309580 A JP3309580 A JP 3309580A JP S56129814 A JPS56129814 A JP S56129814A
Authority
JP
Japan
Prior art keywords
liquid
liquid surface
amount
time
siphon tube
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
JP3309580A
Other languages
Japanese (ja)
Inventor
Yozo Kasai
Hisataro Akao
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.)
Daicel Corp
Original Assignee
Daicel Corp
Daicel Chemical Industries 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 Daicel Corp, Daicel Chemical Industries Ltd filed Critical Daicel Corp
Priority to JP3309580A priority Critical patent/JPS56129814A/en
Publication of JPS56129814A publication Critical patent/JPS56129814A/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
    • G01F3/00—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow
    • G01F3/36—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with stationary measuring chambers having constant volume during measurement
    • G01F3/38—Measuring the volume flow of fluids or fluent solid material wherein the fluid passes through the meter in successive and more or less isolated quantities, the meter being driven by the flow with stationary measuring chambers having constant volume during measurement having only one measuring chamber
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/20—Measuring for diagnostic purposes; Identification of persons for measuring urological functions restricted to the evaluation of the urinary system
    • A61B5/207—Sensing devices adapted to collect urine
    • A61B5/208—Sensing devices adapted to collect urine adapted to determine urine quantity, e.g. flow, volume

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Urology & Nephrology (AREA)
  • General Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physiology (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • External Artificial Organs (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To make a device so inexpensive to permit its throwaway by a method wherein periodic variations of the liquid surface of a liquid in a vertical container between the lower and upper limits in a siphon tube are detected and transmitted so as to compute and display a signal indicating the flowing amount corresponding to the change of signal and time. CONSTITUTION:The liquid surface l is gradually raised as a liquid is introduced from a port 3. When the liquid surface l reaches the upper limit lH of a siphon tube, the liquid is discharged via the siphon tube 4 to the outside, and the discharging continues until the liquid surface returns to the lower limit lL of the siphon. The discharging stops at this time, so that the liquid surface is again gradually raised. The liquid surface periodically repeats going up and down between the lower limit lL and the upper limit lH. The number of ups and downs of the liquid surface is counted by a microcomputer 8. Since the amount of a liquid discharged at one time has been measured and inputted to the microcomputer, the integrated liquid amount can be computed. If this amount is divided by the time required, the flow amount is obtainable, and the value is displayed on a device 9.
JP3309580A 1980-03-14 1980-03-14 Micro-flowmeter Pending JPS56129814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3309580A JPS56129814A (en) 1980-03-14 1980-03-14 Micro-flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3309580A JPS56129814A (en) 1980-03-14 1980-03-14 Micro-flowmeter

Publications (1)

Publication Number Publication Date
JPS56129814A true JPS56129814A (en) 1981-10-12

Family

ID=12377098

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3309580A Pending JPS56129814A (en) 1980-03-14 1980-03-14 Micro-flowmeter

Country Status (1)

Country Link
JP (1) JPS56129814A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03291529A (en) * 1990-04-09 1991-12-20 Fujita Corp Method and instrument for measuring fine flow rate
CN102506948A (en) * 2011-11-15 2012-06-20 中国科学院华南植物园 Stemflow meter
JP2019000305A (en) * 2017-06-14 2019-01-10 ニプロ株式会社 Preparation apparatus and preparation method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03291529A (en) * 1990-04-09 1991-12-20 Fujita Corp Method and instrument for measuring fine flow rate
CN102506948A (en) * 2011-11-15 2012-06-20 中国科学院华南植物园 Stemflow meter
JP2019000305A (en) * 2017-06-14 2019-01-10 ニプロ株式会社 Preparation apparatus and preparation method

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