CH679076A5 - - Google Patents

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Publication number
CH679076A5
CH679076A5 CH219589A CH219589A CH679076A5 CH 679076 A5 CH679076 A5 CH 679076A5 CH 219589 A CH219589 A CH 219589A CH 219589 A CH219589 A CH 219589A CH 679076 A5 CH679076 A5 CH 679076A5
Authority
CH
Switzerland
Prior art keywords
gas
leaf
cuvette
analyzer
measuring
Prior art date
Application number
CH219589A
Other languages
German (de)
English (en)
Inventor
Oscar Dr Sc Nat Oehler
Herbert Dr Sc Nat Blum
Rolf Pleisch
Original Assignee
Oscar Dr Sc Nat Oehler
Herbert Dr Sc Nat Blum
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 Oscar Dr Sc Nat Oehler, Herbert Dr Sc Nat Blum filed Critical Oscar Dr Sc Nat Oehler
Priority to CH219589A priority Critical patent/CH679076A5/de
Priority to DE19904018393 priority patent/DE4018393A1/de
Publication of CH679076A5 publication Critical patent/CH679076A5/de

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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • 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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
    • G01N2021/1704—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids in gases
    • 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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N2021/635—Photosynthetic material analysis, e.g. chrorophyll
CH219589A 1989-06-13 1989-06-13 CH679076A5 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH219589A CH679076A5 (fr) 1989-06-13 1989-06-13
DE19904018393 DE4018393A1 (de) 1989-06-13 1990-06-08 Verfahren und vorrichtung zum messen von photosynthese-austauschgasen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH219589A CH679076A5 (fr) 1989-06-13 1989-06-13

Publications (1)

Publication Number Publication Date
CH679076A5 true CH679076A5 (fr) 1991-12-13

Family

ID=4228109

Family Applications (1)

Application Number Title Priority Date Filing Date
CH219589A CH679076A5 (fr) 1989-06-13 1989-06-13

Country Status (2)

Country Link
CH (1) CH679076A5 (fr)
DE (1) DE4018393A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0760474A1 (fr) 1995-09-04 1997-03-05 Cerberus Ag Détecteur de gaz photo acoustique et son utilisation
EP0855592B1 (fr) * 1997-01-25 2006-07-12 Siemens Schweiz AG Détecteur de gaz optoacoustique
US8561454B2 (en) 2010-10-28 2013-10-22 Empire Technology Development Llc Photoacoustic sensor

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130639A1 (de) * 1991-09-14 1993-03-18 Reinhard Dr Niessner Verfahren zur quantitativen und qualitativen erfassung von kohlenwasserstoffhaltigen russschwebeteilchen in gasen
DE4223082A1 (de) * 1992-07-14 1992-11-19 Walz Heinz Gmbh Tragbare gaswechselkammer mit tragbarer versorgungsanordnung
CH685889A5 (de) * 1994-09-07 1995-10-31 Scr Crevoiserat S A Verfahren und Vorrichtung zur Bestimmung von Gaskonzentrationen in einem Gasgemisch
US5900533A (en) 1995-08-03 1999-05-04 Trw Inc. System and method for isotope ratio analysis and gas detection by photoacoustics
DE10132477A1 (de) * 2001-07-03 2003-01-23 Siemens Ag Erfassungseinrichtung für ein Fluid und Verfahren zur Ermittlung des Wechsels einer Fluidart
ATE373817T1 (de) * 2002-06-01 2007-10-15 Siemens Schweiz Ag Optischer gasmelder
EP1574841A1 (fr) * 2004-03-08 2005-09-14 Siemens Building Technologies AG Détecteur de gaz photoacoustique
EP1574840A1 (fr) * 2004-03-08 2005-09-14 Siemens Building Technologies AG Détecteur de gaz photoacoustique et son procédé de fabrication
EP1582857A1 (fr) * 2004-04-02 2005-10-05 Siemens Building Technologies AG Détecteur de gaz photoacoustique comprenant une source de lumière avec réflecteur, et méthode pour optimiser le contour du réflecteur
US8848191B2 (en) 2012-03-14 2014-09-30 Honeywell International Inc. Photoacoustic sensor with mirror

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5753797A (en) * 1995-04-09 1998-05-19 Cerberus Ag Photo-acoustic gas sensor and its manufacture and use
EP0760474A1 (fr) 1995-09-04 1997-03-05 Cerberus Ag Détecteur de gaz photo acoustique et son utilisation
EP0855592B1 (fr) * 1997-01-25 2006-07-12 Siemens Schweiz AG Détecteur de gaz optoacoustique
US8561454B2 (en) 2010-10-28 2013-10-22 Empire Technology Development Llc Photoacoustic sensor

Also Published As

Publication number Publication date
DE4018393A1 (de) 1990-12-20

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Legal Events

Date Code Title Description
PL Patent ceased