SE9503139L - Device for measuring the CO2 concentration in a gas - Google Patents

Device for measuring the CO2 concentration in a gas

Info

Publication number
SE9503139L
SE9503139L SE9503139A SE9503139A SE9503139L SE 9503139 L SE9503139 L SE 9503139L SE 9503139 A SE9503139 A SE 9503139A SE 9503139 A SE9503139 A SE 9503139A SE 9503139 L SE9503139 L SE 9503139L
Authority
SE
Sweden
Prior art keywords
gas
concentration
indicating element
measuring
constituent
Prior art date
Application number
SE9503139A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9503139D0 (en
Inventor
Andras Gedeon
Paul Krill
Original Assignee
Minco Ab
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 Minco Ab filed Critical Minco Ab
Priority to SE9503139A priority Critical patent/SE9503139L/en
Publication of SE9503139D0 publication Critical patent/SE9503139D0/en
Priority to PCT/SE1996/001129 priority patent/WO1997010496A1/en
Priority to PCT/SE1996/001131 priority patent/WO1997010497A1/en
Publication of SE9503139L publication Critical patent/SE9503139L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
    • G01N21/783—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour for analysing gases

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

A device for quantitatively measuring a constituent gas, such as CO2, in a gas mixture, such as air, comprises (I) an indicator unit (23) including a colorimetric indicating element (26) whose ability within a first concentration range to return incident light varies in dependence on the concentration of said constituent gas in a gas mixture contacting the indicating element, and whose ability within an adjoining second, higher concentration range to return incident light is substantially independent of the concentration of said constituent gas of the gas mixture; (II) a light source (18, 19) for illuminating the indicating element; and (III) a photoelectric light measuring means (21) for measuring the intensity of light returned from the indicating element upon illumination thereof by the light source. Prior to the first use thereof the indicator unit (23) is enclosed in substantially gas-tight fashion in a diffusion-proof openable enclosure (28, 29) filled with a calibrating gas containing said constituent gas in a concentration within the second concentration range.
SE9503139A 1995-09-11 1995-09-11 Device for measuring the CO2 concentration in a gas SE9503139L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9503139A SE9503139L (en) 1995-09-11 1995-09-11 Device for measuring the CO2 concentration in a gas
PCT/SE1996/001129 WO1997010496A1 (en) 1995-09-11 1996-09-11 A device for measuring the concentration of carbon dioxide in a gas
PCT/SE1996/001131 WO1997010497A1 (en) 1995-09-11 1996-09-11 A device for quantitatively measuring a constituent gas in a gas mixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9503139A SE9503139L (en) 1995-09-11 1995-09-11 Device for measuring the CO2 concentration in a gas

Publications (2)

Publication Number Publication Date
SE9503139D0 SE9503139D0 (en) 1995-09-11
SE9503139L true SE9503139L (en) 1997-03-12

Family

ID=20399443

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9503139A SE9503139L (en) 1995-09-11 1995-09-11 Device for measuring the CO2 concentration in a gas

Country Status (2)

Country Link
SE (1) SE9503139L (en)
WO (2) WO1997010497A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002246971A1 (en) * 2001-01-09 2002-08-06 Ppg Industries Ohio, Inc. Method and device for detecting and controlling the level of biological contaminants in a coating process
US8454526B2 (en) 2006-09-25 2013-06-04 Covidien Lp Carbon dioxide-sensing airway products and technique for using the same
US8431087B2 (en) 2006-09-25 2013-04-30 Covidien Lp Carbon dioxide detector having borosilicate substrate
US8420405B2 (en) 2006-09-25 2013-04-16 Covidien Lp Carbon dioxide detector having borosilicate substrate
US8431088B2 (en) 2006-09-25 2013-04-30 Covidien Lp Carbon dioxide detector having borosilicate substrate
US8449834B2 (en) 2006-09-25 2013-05-28 Covidien Lp Carbon dioxide detector having borosilicate substrate
US8396524B2 (en) 2006-09-27 2013-03-12 Covidien Lp Medical sensor and technique for using the same
CA2810650C (en) * 2010-09-07 2019-12-03 Nextteq Llc System for visual and electronic reading of colorimetric tubes
US11175234B2 (en) 2010-09-07 2021-11-16 Nextteq Llc System for visual and electronic reading of colorimetric tubes
WO2015009792A1 (en) 2013-07-16 2015-01-22 Palo Alto Health Sciences, Inc. Methods and systems for quantitative colorimetric capnometry

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697869A (en) * 1985-10-11 1987-10-06 Northern Telecom Limited Attenuator for optical fiber
EP0471861B1 (en) * 1990-08-13 1995-11-08 Hewlett-Packard GmbH Optical probe
US5098659A (en) * 1990-09-24 1992-03-24 Abbott Laboratories Apparatus for continuously monitoring a plurality of chemical analytes through a single optical fiber and method of making
US5233194A (en) * 1992-01-03 1993-08-03 Hewlett-Packard Company Optical gas sensor with enriching polymer
WO1994010553A1 (en) * 1992-10-23 1994-05-11 Optex Biomedical, Inc. Fibre-optic probe for the measurement of fluid parameters

Also Published As

Publication number Publication date
WO1997010497A1 (en) 1997-03-20
WO1997010496A1 (en) 1997-03-20
SE9503139D0 (en) 1995-09-11

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