DE68923966T2 - Schaltung zur steuerung des einstellungspunktes in einer infrarot-gasanalysiervorrichtung. - Google Patents

Schaltung zur steuerung des einstellungspunktes in einer infrarot-gasanalysiervorrichtung.

Info

Publication number
DE68923966T2
DE68923966T2 DE68923966T DE68923966T DE68923966T2 DE 68923966 T2 DE68923966 T2 DE 68923966T2 DE 68923966 T DE68923966 T DE 68923966T DE 68923966 T DE68923966 T DE 68923966T DE 68923966 T2 DE68923966 T2 DE 68923966T2
Authority
DE
Germany
Prior art keywords
set point
gas analyzer
circuit
control
signal
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE68923966T
Other languages
English (en)
Other versions
DE68923966D1 (de
Inventor
Raymond Rogers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andros Inc
Original Assignee
Andros Inc
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 Andros Inc filed Critical Andros Inc
Publication of DE68923966D1 publication Critical patent/DE68923966D1/de
Application granted granted Critical
Publication of DE68923966T2 publication Critical patent/DE68923966T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G01N21/17—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
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G01N21/274—Calibration, base line adjustment, drift correction
    • 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
    • G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
    • G01J1/16—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors
    • G01J1/18—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void using electric radiation detectors using comparison with a reference electric value
    • 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
    • G01N2021/3129—Determining multicomponents by multiwavelength light
    • 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
    • G01N2201/12—Circuits of general importance; Signal processing
    • G01N2201/121—Correction signals
    • G01N2201/1211—Correction signals for temperature
    • 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
    • G01N2201/12—Circuits of general importance; Signal processing
    • G01N2201/126—Microprocessor processing

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Lasers (AREA)
  • Particle Accelerators (AREA)
  • Luminescent Compositions (AREA)
DE68923966T 1988-04-15 1989-04-14 Schaltung zur steuerung des einstellungspunktes in einer infrarot-gasanalysiervorrichtung. Expired - Fee Related DE68923966T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/181,929 US4918311A (en) 1988-04-15 1988-04-15 Set point control circuit for an infrared gas analyzer
PCT/US1989/001602 WO1989009930A1 (en) 1988-04-15 1989-04-14 An improved set point control circuit for an infrared gas analyzer

Publications (2)

Publication Number Publication Date
DE68923966D1 DE68923966D1 (de) 1995-09-28
DE68923966T2 true DE68923966T2 (de) 1996-02-29

Family

ID=22666398

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68923966T Expired - Fee Related DE68923966T2 (de) 1988-04-15 1989-04-14 Schaltung zur steuerung des einstellungspunktes in einer infrarot-gasanalysiervorrichtung.

Country Status (9)

Country Link
US (1) US4918311A (de)
EP (1) EP0420858B1 (de)
JP (1) JPH03503684A (de)
AT (1) ATE126885T1 (de)
AU (1) AU617178B2 (de)
CA (1) CA1319525C (de)
DE (1) DE68923966T2 (de)
FI (1) FI905019A0 (de)
WO (1) WO1989009930A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184017A (en) * 1989-09-12 1993-02-02 Sensors, Inc. Method and apparatus for detecting a component gas in a sample
US5184500A (en) * 1990-03-20 1993-02-09 J And N Associates, Inc. Gas detector
FI935788A0 (fi) * 1993-12-22 1993-12-22 Instrumentarium Oy Foerfarande foer kalibrering av en gasanalysator
DE60143808D1 (de) * 2000-09-15 2011-02-17 Radian Res Inc Verfahren und vorrichtung zur analog/digital-umsetzung
CN110208152A (zh) * 2018-08-01 2019-09-06 华帝股份有限公司 应用在烟机上的传感器电路及其烟机

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1239213A (de) * 1967-07-12 1971-07-14
US4233513A (en) * 1978-10-05 1980-11-11 Andros Incorporated Gas analyzer
US4398091A (en) * 1981-08-24 1983-08-09 Andros Analyzers Incorporated Temperature compensated gas analyzer
JPS5998221A (ja) * 1982-11-26 1984-06-06 Shimadzu Corp 加熱制御装置
JPS59171836A (ja) * 1983-03-18 1984-09-28 Sanyo Electric Co Ltd 光吸収セル
JPS62112038A (ja) * 1985-11-09 1987-05-23 Horiba Ltd 吸光分析計における感度校正機構
US4687934A (en) * 1986-01-10 1987-08-18 Andros Analyzers Incorporated Infrared gas analyzer with automatic zero adjustment

Also Published As

Publication number Publication date
DE68923966D1 (de) 1995-09-28
ATE126885T1 (de) 1995-09-15
FI905019A0 (fi) 1990-10-12
AU3557389A (en) 1989-11-03
EP0420858A4 (en) 1991-12-04
EP0420858B1 (de) 1995-08-23
JPH03503684A (ja) 1991-08-15
US4918311A (en) 1990-04-17
AU617178B2 (en) 1991-11-21
EP0420858A1 (de) 1991-04-10
CA1319525C (en) 1993-06-29
WO1989009930A1 (en) 1989-10-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee