JPS5580038A - Gas monitor apparatus - Google Patents

Gas monitor apparatus

Info

Publication number
JPS5580038A
JPS5580038A JP15462878A JP15462878A JPS5580038A JP S5580038 A JPS5580038 A JP S5580038A JP 15462878 A JP15462878 A JP 15462878A JP 15462878 A JP15462878 A JP 15462878A JP S5580038 A JPS5580038 A JP S5580038A
Authority
JP
Japan
Prior art keywords
gas
cell
pressure
gas pressure
contamination
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.)
Pending
Application number
JP15462878A
Other languages
Japanese (ja)
Inventor
Mitsuo Yoshikawa
Koji Shinohara
Michiharu Ito
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15462878A priority Critical patent/JPS5580038A/en
Publication of JPS5580038A publication Critical patent/JPS5580038A/en
Pending 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 improve the measuring accuracy of the contamination of the test gas such as air ever-changing by invariably maintaining the gas pressure in the gas cell at the given low level with means of having the gas introduced into and exhausted out of the gas cell. CONSTITUTION:A sample gas passes through an introduced gas volume control valve 2 of gas introducing means 10 from an introduction inlet 1 and is always introduced continuously into a gas cell 3. On the other hand, a gas exhaust port 4 is provided at the other end of the cell 3 and an exhaust device 5 mounted to the port 4 always exhausts gas inside the cell 3. The gas introduction means 10 has a gauge 6 mounted to a gas branch tube 7 to measure the gas pressure in the cell 3. The output of the gauge 6 is applied to a gas setting device 8 adapted to output the voltage corresponding to the gas pressure and actuates a device for opening and closing the introduced gas volume control valve 2 by the electric signal from the device 8. Thus the gas pressure on the cell 3 can be invariably maintained at the given low level. Therefore, it is possible to measure the contamination of air ever- changing at a high accuracy.
JP15462878A 1978-12-13 1978-12-13 Gas monitor apparatus Pending JPS5580038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15462878A JPS5580038A (en) 1978-12-13 1978-12-13 Gas monitor apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15462878A JPS5580038A (en) 1978-12-13 1978-12-13 Gas monitor apparatus

Publications (1)

Publication Number Publication Date
JPS5580038A true JPS5580038A (en) 1980-06-16

Family

ID=15588336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15462878A Pending JPS5580038A (en) 1978-12-13 1978-12-13 Gas monitor apparatus

Country Status (1)

Country Link
JP (1) JPS5580038A (en)

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