JPS5515086A - Gas density measuring unit - Google Patents

Gas density measuring unit

Info

Publication number
JPS5515086A
JPS5515086A JP8880578A JP8880578A JPS5515086A JP S5515086 A JPS5515086 A JP S5515086A JP 8880578 A JP8880578 A JP 8880578A JP 8880578 A JP8880578 A JP 8880578A JP S5515086 A JPS5515086 A JP S5515086A
Authority
JP
Japan
Prior art keywords
light
outputs
photoelectric conversion
pass
discharge tube
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.)
Granted
Application number
JP8880578A
Other languages
Japanese (ja)
Other versions
JPS61933B2 (en
Inventor
Akira Maeda
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP8880578A priority Critical patent/JPS5515086A/en
Publication of JPS5515086A publication Critical patent/JPS5515086A/en
Publication of JPS61933B2 publication Critical patent/JPS61933B2/ja
Granted 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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

PURPOSE:To obtain a simple and good-S/N measuring unit by causing the light of a gas discharge tube to pass through measured gas and a standard cell and be incident onto two photoelectric conversion elements and making their outputs into AC by a gate means, which switches them alternatively, and comparing them. CONSTITUTION:The light of gas discharge tube 1 is caused to pass through measured gas atmosphere 15 and standard cell 3 and be incident onto two photoelectric conversion elements 6 and 7, and their outputs are made into AC by a gate means which swithces them alternately, and they are compared with each other. For example, the light of He-Ne discharge tube 1 which emits the light of wave length 3.39mu is caused to pass through environmental atmosphere 15, where methane- system hydrogen carbide is measured gas, and standard cell 3 and be incident onto photoelectric conversion elements 6 and 7. Their outputs are made into AC by gate circuits 8 and 9 which are driven by gate pulse generation circuit 10 and are returned to DC again by intergrating circuits 11 and 12, and after that, the comparison operation result dependent upon comparison operation circuit 13 is displayed on displayed on display part 14.
JP8880578A 1978-07-18 1978-07-18 Gas density measuring unit Granted JPS5515086A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8880578A JPS5515086A (en) 1978-07-18 1978-07-18 Gas density measuring unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8880578A JPS5515086A (en) 1978-07-18 1978-07-18 Gas density measuring unit

Publications (2)

Publication Number Publication Date
JPS5515086A true JPS5515086A (en) 1980-02-01
JPS61933B2 JPS61933B2 (en) 1986-01-13

Family

ID=13953088

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8880578A Granted JPS5515086A (en) 1978-07-18 1978-07-18 Gas density measuring unit

Country Status (1)

Country Link
JP (1) JPS5515086A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316771A1 (en) * 1983-05-07 1984-11-08 Leybold-Heraeus GmbH, 5000 Köln LIGHT SOURCE FOR NON-DISPERSIVE GAS ANALYZERS AS A FLUORESCENT LAMP
JPS62235545A (en) * 1986-01-01 1987-10-15 イラド　テクノロジ−ス　リミテツド Infrared analyzer and infrared source thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3316771A1 (en) * 1983-05-07 1984-11-08 Leybold-Heraeus GmbH, 5000 Köln LIGHT SOURCE FOR NON-DISPERSIVE GAS ANALYZERS AS A FLUORESCENT LAMP
JPS62235545A (en) * 1986-01-01 1987-10-15 イラド　テクノロジ−ス　リミテツド Infrared analyzer and infrared source thereof

Also Published As

Publication number Publication date
JPS61933B2 (en) 1986-01-13

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