FR2282111A1 - Gas bubble detector for pipe system - compares voltage at spaced electrodes receiving oscillations with reference - Google Patents

Gas bubble detector for pipe system - compares voltage at spaced electrodes receiving oscillations with reference

Info

Publication number
FR2282111A1
FR2282111A1 FR7427846A FR7427846A FR2282111A1 FR 2282111 A1 FR2282111 A1 FR 2282111A1 FR 7427846 A FR7427846 A FR 7427846A FR 7427846 A FR7427846 A FR 7427846A FR 2282111 A1 FR2282111 A1 FR 2282111A1
Authority
FR
France
Prior art keywords
pipe system
gas bubble
spaced electrodes
bubble detector
compares voltage
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
FR7427846A
Other languages
French (fr)
Other versions
FR2282111B1 (en
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.)
IERAM SARL
Original Assignee
IERAM SARL
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 IERAM SARL filed Critical IERAM SARL
Priority to FR7427846A priority Critical patent/FR2282111A1/en
Publication of FR2282111A1 publication Critical patent/FR2282111A1/en
Application granted granted Critical
Publication of FR2282111B1 publication Critical patent/FR2282111B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/483—Physical analysis of biological material
    • G01N33/487—Physical analysis of biological material of liquid biological material
    • G01N33/49—Blood
    • G01N33/4915—Blood using flow cells
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/228—Circuits therefor

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Hematology (AREA)
  • Physics & Mathematics (AREA)
  • Food Science & Technology (AREA)
  • Molecular Biology (AREA)
  • Urology & Nephrology (AREA)
  • Ecology (AREA)
  • Biophysics (AREA)
  • Medicinal Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

The detector comprises two electrodes (10a, 10b) positioned near to each other along the external surface of the pipeline carrying the liquid. An oscillator (12) supplies the segment of pipeline between the two electrodes with a high frequency (100 to 200 kHz) current and the voltage (V1) at the terminals of this segment is compared with a voltage (V) proportional to that of the oscillator (12). A capacitor (11), or other constant impedance, may be placed in series with the pipeline segment.
FR7427846A 1974-08-12 1974-08-12 Gas bubble detector for pipe system - compares voltage at spaced electrodes receiving oscillations with reference Granted FR2282111A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7427846A FR2282111A1 (en) 1974-08-12 1974-08-12 Gas bubble detector for pipe system - compares voltage at spaced electrodes receiving oscillations with reference

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7427846A FR2282111A1 (en) 1974-08-12 1974-08-12 Gas bubble detector for pipe system - compares voltage at spaced electrodes receiving oscillations with reference

Publications (2)

Publication Number Publication Date
FR2282111A1 true FR2282111A1 (en) 1976-03-12
FR2282111B1 FR2282111B1 (en) 1978-03-31

Family

ID=9142326

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7427846A Granted FR2282111A1 (en) 1974-08-12 1974-08-12 Gas bubble detector for pipe system - compares voltage at spaced electrodes receiving oscillations with reference

Country Status (1)

Country Link
FR (1) FR2282111A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422161A1 (en) * 1978-04-05 1979-11-02 Chaillou Alphonse Detecting bubble in liq. for medical infusion - using liq. in tube as capacitor dielectric with change in value fed to comparator
EP0494586A2 (en) * 1990-12-07 1992-07-15 F. Wennström Aktiebolag System for separating gas from a liquid flow whose volume is to be measured
FR2820504A1 (en) * 2001-02-08 2002-08-09 Sc2N Sa DEVICE FOR DETECTING GAS BUBBLES IN A LIQUID

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1432870A (en) * 1964-03-17 1966-03-25 Industrial Nucleonics Corp Methods and apparatus for making measurements on dielectric materials
FR2067572A5 (en) * 1969-11-07 1971-08-20 Aura
FR2154075A5 (en) * 1971-09-16 1973-05-04 Sandoz Sa

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1432870A (en) * 1964-03-17 1966-03-25 Industrial Nucleonics Corp Methods and apparatus for making measurements on dielectric materials
FR2067572A5 (en) * 1969-11-07 1971-08-20 Aura
FR2154075A5 (en) * 1971-09-16 1973-05-04 Sandoz Sa

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422161A1 (en) * 1978-04-05 1979-11-02 Chaillou Alphonse Detecting bubble in liq. for medical infusion - using liq. in tube as capacitor dielectric with change in value fed to comparator
EP0494586A2 (en) * 1990-12-07 1992-07-15 F. Wennström Aktiebolag System for separating gas from a liquid flow whose volume is to be measured
EP0494586A3 (en) * 1990-12-07 1993-04-14 Wennstroem F Ab System for separating gas from a liquid flow whose volume is to be measured
US5232006A (en) * 1990-12-07 1993-08-03 F. Wennstrom Aktiebolag System for separating gas from a liquid flow whose volume is to be measured
FR2820504A1 (en) * 2001-02-08 2002-08-09 Sc2N Sa DEVICE FOR DETECTING GAS BUBBLES IN A LIQUID
EP1231463A1 (en) * 2001-02-08 2002-08-14 Sc2N Sensor for detecting gas bubbles in a liquid

Also Published As

Publication number Publication date
FR2282111B1 (en) 1978-03-31

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Legal Events

Date Code Title Description
ST Notification of lapse
TP Transmission of property