SE0002099L - An electrical and / or electronic coupling arrangement - Google Patents

An electrical and / or electronic coupling arrangement

Info

Publication number
SE0002099L
SE0002099L SE0002099A SE0002099A SE0002099L SE 0002099 L SE0002099 L SE 0002099L SE 0002099 A SE0002099 A SE 0002099A SE 0002099 A SE0002099 A SE 0002099A SE 0002099 L SE0002099 L SE 0002099L
Authority
SE
Sweden
Prior art keywords
frequency
light
value
pulse
light source
Prior art date
Application number
SE0002099A
Other languages
Swedish (sv)
Other versions
SE522022C2 (en
SE0002099D0 (en
Inventor
Hans Goeran Evald Martin
Original Assignee
Senseair 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 Senseair Ab filed Critical Senseair Ab
Priority to SE0002099A priority Critical patent/SE522022C2/en
Publication of SE0002099D0 publication Critical patent/SE0002099D0/en
Publication of SE0002099L publication Critical patent/SE0002099L/en
Publication of SE522022C2 publication Critical patent/SE522022C2/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
    • G01N21/17—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
    • 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
    • G01N2021/0162—Arrangements or apparatus for facilitating the optical investigation using microprocessors for control of a sequence of operations, e.g. test, powering, switching, processing

Abstract

If gas data deviates from a given (threshold) value, a control circuit causes a light source to emit light at a second pulse frequency greater than the first pulse frequency. The value of the first frequency is less than 1 pulse every 1/60 of a second, and the second frequency increases with gas concentration. An electr(on)ic connection arrangement is used for a measuring cell (2) used to detect the presence of a gas (mixture) and/or measure its concentration. The cell contains a light source and a light-sensitive device (22) for detecting light passing through an optical measurement path formed by e.g. mirror surfaces for reflecting the light. The output signal from the light-sensitive device is sent to a spectral analysis device. The light source is connected to a control circuit designed to ensure light is emitted in pulses with a given first frequency. If the gas data deviates from a given (threshold) value, the control circuit will make the light source emit light in pulses at a second frequency greater than the first frequency. The value of the first frequency is less than 1 pulse every 1/60 of a second, and the second frequency increases with gas concentration.
SE0002099A 2000-06-05 2000-06-05 Spectral analysis device for detecting gases or measuring gas concentration, has light pulse frequency increased if data deviates from a given value SE522022C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE0002099A SE522022C2 (en) 2000-06-05 2000-06-05 Spectral analysis device for detecting gases or measuring gas concentration, has light pulse frequency increased if data deviates from a given value

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0002099A SE522022C2 (en) 2000-06-05 2000-06-05 Spectral analysis device for detecting gases or measuring gas concentration, has light pulse frequency increased if data deviates from a given value

Publications (3)

Publication Number Publication Date
SE0002099D0 SE0002099D0 (en) 2000-06-05
SE0002099L true SE0002099L (en) 2001-12-06
SE522022C2 SE522022C2 (en) 2004-01-07

Family

ID=20279976

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0002099A SE522022C2 (en) 2000-06-05 2000-06-05 Spectral analysis device for detecting gases or measuring gas concentration, has light pulse frequency increased if data deviates from a given value

Country Status (1)

Country Link
SE (1) SE522022C2 (en)

Also Published As

Publication number Publication date
SE522022C2 (en) 2004-01-07
SE0002099D0 (en) 2000-06-05

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Legal Events

Date Code Title Description
NUG Patent has lapsed