FR2681137B1 - DEVICE FOR MEASURING AND ADJUSTING THE AIR CONCENTRATION OF A SPEAKER. - Google Patents

DEVICE FOR MEASURING AND ADJUSTING THE AIR CONCENTRATION OF A SPEAKER.

Info

Publication number
FR2681137B1
FR2681137B1 FR9111204A FR9111204A FR2681137B1 FR 2681137 B1 FR2681137 B1 FR 2681137B1 FR 9111204 A FR9111204 A FR 9111204A FR 9111204 A FR9111204 A FR 9111204A FR 2681137 B1 FR2681137 B1 FR 2681137B1
Authority
FR
France
Prior art keywords
speaker
measuring
adjusting
air concentration
concentration
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.)
Expired - Fee Related
Application number
FR9111204A
Other languages
French (fr)
Other versions
FR2681137A1 (en
Inventor
Thibault Didier
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.)
Superba SAS
Original Assignee
Superba SAS
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 Superba SAS filed Critical Superba SAS
Priority to FR9111204A priority Critical patent/FR2681137B1/en
Priority to DE19924230343 priority patent/DE4230343A1/en
Priority to GB9219289A priority patent/GB2259573B/en
Publication of FR2681137A1 publication Critical patent/FR2681137A1/en
Application granted granted Critical
Publication of FR2681137B1 publication Critical patent/FR2681137B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/406—Cells and probes with solid electrolytes
    • G01N27/4067—Means for heating or controlling the temperature of the solid electrolyte
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/135—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by sensing at least one property of the mixture
    • G05D11/138—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by sensing at least one property of the mixture by sensing the concentration of the mixture, e.g. measuring pH value

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Molecular Biology (AREA)
  • Automation & Control Theory (AREA)
  • Engineering & Computer Science (AREA)
  • Electrochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
FR9111204A 1991-09-11 1991-09-11 DEVICE FOR MEASURING AND ADJUSTING THE AIR CONCENTRATION OF A SPEAKER. Expired - Fee Related FR2681137B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9111204A FR2681137B1 (en) 1991-09-11 1991-09-11 DEVICE FOR MEASURING AND ADJUSTING THE AIR CONCENTRATION OF A SPEAKER.
DE19924230343 DE4230343A1 (en) 1991-09-11 1992-09-10 DEVICE FOR MEASURING AND CONTROLLING THE AIR DENSITY IN A CONTAINER
GB9219289A GB2259573B (en) 1991-09-11 1992-09-11 Device for measuring and regulating the air concentration in a chamber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9111204A FR2681137B1 (en) 1991-09-11 1991-09-11 DEVICE FOR MEASURING AND ADJUSTING THE AIR CONCENTRATION OF A SPEAKER.

Publications (2)

Publication Number Publication Date
FR2681137A1 FR2681137A1 (en) 1993-03-12
FR2681137B1 true FR2681137B1 (en) 1994-07-29

Family

ID=9416837

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9111204A Expired - Fee Related FR2681137B1 (en) 1991-09-11 1991-09-11 DEVICE FOR MEASURING AND ADJUSTING THE AIR CONCENTRATION OF A SPEAKER.

Country Status (3)

Country Link
DE (1) DE4230343A1 (en)
FR (1) FR2681137B1 (en)
GB (1) GB2259573B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU662855B2 (en) * 1993-03-25 1995-09-14 Novatech Controls Pty Ltd Oxygen probe
IN184135B (en) * 1993-03-25 2000-06-17 Novatech Controls Australia
CN103235608B (en) * 2013-04-24 2015-02-04 丹东百特仪器有限公司 Humidity control system
CN112730606B (en) * 2020-12-31 2022-09-27 青岛精安医疗科技有限责任公司 Ultrasonic oxygen concentration measuring method and system based on pressure detection and oxygen generation system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1225690A (en) * 1967-10-18 1971-03-17
FR2144951A5 (en) * 1971-07-05 1973-02-16 Commissariat Energie Atomique
FR2478150A1 (en) * 1980-03-12 1981-09-18 Superba Sa Steam treatment chamber for yarns - has homogeneous ambient atmosphere
JPS5928661B2 (en) * 1980-07-19 1984-07-14 株式会社山東鉄工所 Atmosphere measurement and adjustment device in high pressure steamer
CA1180384A (en) * 1981-03-06 1985-01-02 Masato Maeda Oxygen gas analyzer using solid electrolyte
EP0108141A1 (en) * 1982-05-07 1984-05-16 Marathon Medical Equipment Corporation Oxygen analyzer
US4537661A (en) * 1984-05-24 1985-08-27 Westinghouse Electric Corp. Technique for monitoring the oxidation/reduction potential characteristics of a steam environment
EP0281375A3 (en) * 1987-03-04 1989-11-29 Westinghouse Electric Corporation Oxygen analyzer
JPS63218852A (en) * 1987-03-09 1988-09-12 Yokogawa Electric Corp Apparatus for measuring concentrations of o2 and combustible gas in exhaust gas
AU596538B2 (en) * 1987-09-03 1990-05-03 International Control Automation Finance Sa Method of applying an automotive type oxygen sensor for use in an industrial process analyzer
GB8922126D0 (en) * 1989-10-02 1989-11-15 Normalair Garrett Ltd Oxygen monitoring method and apparatus
FR2652530A1 (en) * 1989-10-04 1991-04-05 Snecma MILLING HEAD, PARTICULARLY FOR MACHINING ROBOT.

Also Published As

Publication number Publication date
GB2259573B (en) 1995-05-17
GB9219289D0 (en) 1992-10-28
FR2681137A1 (en) 1993-03-12
GB2259573A (en) 1993-03-17
DE4230343A1 (en) 1993-03-18

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Legal Events

Date Code Title Description
TP Transmission of property
CA Change of address
ST Notification of lapse

Effective date: 20060531