FI903858A - Anordning och foerfarande foer maetning av halten av en gas. - Google Patents

Anordning och foerfarande foer maetning av halten av en gas.

Info

Publication number
FI903858A
FI903858A FI903858A FI903858A FI903858A FI 903858 A FI903858 A FI 903858A FI 903858 A FI903858 A FI 903858A FI 903858 A FI903858 A FI 903858A FI 903858 A FI903858 A FI 903858A
Authority
FI
Finland
Prior art keywords
faring
halten
maintenance
procedure
gas
Prior art date
Application number
FI903858A
Other languages
English (en)
Other versions
FI903858A0 (fi
FI85426C (fi
FI85426B (fi
Inventor
Ari Lehto
Original Assignee
Vaisala Oy
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 Vaisala Oy filed Critical Vaisala Oy
Priority to FI903858A priority Critical patent/FI85426C/fi
Publication of FI903858A0 publication Critical patent/FI903858A0/fi
Priority to EP19910306271 priority patent/EP0469733A3/en
Priority to US07/731,971 priority patent/US5160843A/en
Priority to JP3216644A priority patent/JPH04250337A/ja
Application granted granted Critical
Publication of FI903858A publication Critical patent/FI903858A/fi
Publication of FI85426B publication Critical patent/FI85426B/fi
Publication of FI85426C publication Critical patent/FI85426C/fi

Links

Classifications

    • 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
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
    • G01J3/108—Arrangements of light sources specially adapted for spectrometry or colorimetry for measurement in the infrared range
    • 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
    • G01N2201/06—Illumination; Optics
    • G01N2201/061—Sources
    • G01N2201/06166—Line selective sources
    • G01N2201/06173—IR sources from heated molecular species

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
FI903858A 1990-08-03 1990-08-03 Anordning och foerfarande foer maetning av halten av en gas. FI85426C (fi)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI903858A FI85426C (fi) 1990-08-03 1990-08-03 Anordning och foerfarande foer maetning av halten av en gas.
EP19910306271 EP0469733A3 (en) 1990-08-03 1991-07-11 Apparatus and method for measuring gas concentrations
US07/731,971 US5160843A (en) 1990-08-03 1991-07-18 Apparatus and method for measuring gas concentrations
JP3216644A JPH04250337A (ja) 1990-08-03 1991-08-02 気体集束作用を測定するための装置および方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI903858 1990-08-03
FI903858A FI85426C (fi) 1990-08-03 1990-08-03 Anordning och foerfarande foer maetning av halten av en gas.

Publications (4)

Publication Number Publication Date
FI903858A0 FI903858A0 (fi) 1990-08-03
FI903858A true FI903858A (fi) 1991-12-31
FI85426B FI85426B (fi) 1991-12-31
FI85426C FI85426C (fi) 1992-04-10

Family

ID=8530879

Family Applications (1)

Application Number Title Priority Date Filing Date
FI903858A FI85426C (fi) 1990-08-03 1990-08-03 Anordning och foerfarande foer maetning av halten av en gas.

Country Status (4)

Country Link
US (1) US5160843A (fi)
EP (1) EP0469733A3 (fi)
JP (1) JPH04250337A (fi)
FI (1) FI85426C (fi)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2264169B (en) * 1992-02-07 1995-08-02 Alan John Hayes Fluid monitoring
US5510269A (en) * 1992-11-20 1996-04-23 Sensors, Inc. Infrared method and apparatus for measuring gas concentration including electronic calibration
FR2713770B1 (fr) * 1993-12-10 1996-02-09 Sextant Avionique Procédé et appareil de mesure optique de la pression d'un mélange gazeux.
EP0809284B8 (en) * 1995-12-28 2007-06-13 Taiyo Nippon Sanso Corporation Method and system for transporting substrate wafers
US6124145A (en) * 1998-01-23 2000-09-26 Instrumentarium Corporation Micromachined gas-filled chambers and method of microfabrication
US6586885B2 (en) * 2001-08-20 2003-07-01 Motorola, Inc. MHCD and microfluidic apparatus and method
DE10342800A1 (de) * 2003-09-16 2005-04-28 Fraunhofer Ges Forschung Vorrichtung zur Absorption und/oder Emission von Strahlung, Verfahren zur Herstellung einer solchen Vorrichtung und Verfahren zur Analyse von Fluiden
DE102007029536A1 (de) * 2007-06-25 2009-01-02 GEA Process Engineering (NPS) Ltd., Eastleigh Vorrichtung zur optischen Messung von Stoffkonzentrationen
US8785874B2 (en) 2010-12-30 2014-07-22 Walter Kidde Portable Equipment, Inc. Ionization window

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3249754A (en) * 1962-03-26 1966-05-03 Beckman Instruments Inc Double beam fluorometer using an alternately activated double beam lamp
US3600091A (en) * 1970-05-13 1971-08-17 Atomic Energy Commission Bright-line emission source for absorption spectroscopy
US3725701A (en) * 1971-10-26 1973-04-03 Andros Inc Fluorescent source non-dispersive infrared gas analyzer
IN142576B (fi) * 1974-03-04 1977-07-30 Bbc Brown Boveri & Cie
US4274063A (en) * 1976-12-30 1981-06-16 Ali Javan Infrared spectroscopic lamps and gas detectors incorporating such lamps
IL77494A (en) * 1986-01-01 1989-12-15 Irad Technologies Ltd Gas analyzer
US4780613A (en) * 1986-09-22 1988-10-25 Spectral Sciences, Inc. Infrared species specific emission source
US4721885A (en) * 1987-02-11 1988-01-26 Sri International Very high speed integrated microelectronic tubes
US4967089A (en) * 1987-11-19 1990-10-30 Honeywell Inc. Pulsed optical source

Also Published As

Publication number Publication date
FI903858A0 (fi) 1990-08-03
JPH04250337A (ja) 1992-09-07
EP0469733A2 (en) 1992-02-05
US5160843A (en) 1992-11-03
EP0469733A3 (en) 1992-05-27
FI85426C (fi) 1992-04-10
FI85426B (fi) 1991-12-31

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: VAISALA OY