FI910043A0 - Saett och apparat foer spektroskopisk maetning av koncentrationen av en gas. - Google Patents

Saett och apparat foer spektroskopisk maetning av koncentrationen av en gas.

Info

Publication number
FI910043A0
FI910043A0 FI910043A FI910043A FI910043A0 FI 910043 A0 FI910043 A0 FI 910043A0 FI 910043 A FI910043 A FI 910043A FI 910043 A FI910043 A FI 910043A FI 910043 A0 FI910043 A0 FI 910043A0
Authority
FI
Finland
Prior art keywords
gas
measurement
pct
concentration
sample
Prior art date
Application number
FI910043A
Other languages
English (en)
Inventor
Robert Tell
Torbjoern Andersson
Stefan Lundqvist
Henrik Ahlberg
Original Assignee
Altoptronic 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 Altoptronic Ab filed Critical Altoptronic Ab
Publication of FI910043A0 publication Critical patent/FI910043A0/fi

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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
    • 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
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N21/03—Cuvette constructions
    • G01N21/031—Multipass arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
    • G01J2001/4242—Modulated light, e.g. for synchronizing source and detector circuit
    • 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
    • G01N2021/1748—Comparative step being essential in the method
    • G01N2021/1751—Constructive features therefore, e.g. using two measurement cells
    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
    • G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/08—Optical fibres; light guides
    • G01N2201/0826—Fibre array at source, distributing
FI910043A 1988-07-07 1991-01-04 Saett och apparat foer spektroskopisk maetning av koncentrationen av en gas. FI910043A0 (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8802536A SE8802536D0 (sv) 1988-07-07 1988-07-07 Metod och apparat for spektroskopisk metning av koncentrationen av en gas i ett prov
PCT/SE1989/000404 WO1990000732A1 (en) 1988-07-07 1989-07-07 Method and apparatus for spectroscopic measurement of the concentration of a gaz

Publications (1)

Publication Number Publication Date
FI910043A0 true FI910043A0 (fi) 1991-01-04

Family

ID=20372841

Family Applications (1)

Application Number Title Priority Date Filing Date
FI910043A FI910043A0 (fi) 1988-07-07 1991-01-04 Saett och apparat foer spektroskopisk maetning av koncentrationen av en gas.

Country Status (10)

Country Link
US (1) US5173749A (fi)
EP (1) EP0423223B1 (fi)
JP (1) JP3108420B2 (fi)
AT (1) ATE127584T1 (fi)
DE (1) DE68924163T2 (fi)
DK (1) DK306690A (fi)
FI (1) FI910043A0 (fi)
NO (1) NO304620B1 (fi)
SE (1) SE8802536D0 (fi)
WO (1) WO1990000732A1 (fi)

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Also Published As

Publication number Publication date
DE68924163T2 (de) 1996-05-02
EP0423223B1 (en) 1995-09-06
SE8802536D0 (sv) 1988-07-07
ATE127584T1 (de) 1995-09-15
DK306690D0 (da) 1990-12-28
JPH03505782A (ja) 1991-12-12
NO910008L (no) 1991-02-07
EP0423223A1 (en) 1991-04-24
NO910008D0 (no) 1991-01-03
DK306690A (da) 1991-02-21
US5173749A (en) 1992-12-22
DE68924163D1 (de) 1995-10-12
WO1990000732A1 (en) 1990-01-25
JP3108420B2 (ja) 2000-11-13
NO304620B1 (no) 1999-01-18

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