JPS57190252A - Centralized monitoring device for gas concentration - Google Patents

Centralized monitoring device for gas concentration

Info

Publication number
JPS57190252A
JPS57190252A JP7608881A JP7608881A JPS57190252A JP S57190252 A JPS57190252 A JP S57190252A JP 7608881 A JP7608881 A JP 7608881A JP 7608881 A JP7608881 A JP 7608881A JP S57190252 A JPS57190252 A JP S57190252A
Authority
JP
Japan
Prior art keywords
cell
commonly
gas concentration
monitoring place
detector
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
JP7608881A
Other languages
Japanese (ja)
Inventor
Junichi Kawaguchi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7608881A priority Critical patent/JPS57190252A/en
Publication of JPS57190252A publication Critical patent/JPS57190252A/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

Abstract

PURPOSE:To enable reducing of a device price, by a method wherein only cell assmeblies of an infrared gas concentration analyzer are located at each measuring spot, and others are commonly situated at a monitoring place to connect together them with an optical fiber. CONSTITUTION:Cell assemblies 20A and 20B, consisting of a reference cell 4 and a sample gas cell 5, are located to each measuring place. In freared light sources 2, 3, a detector 6, an amplifier 7, and display recorder 9 are commonly situated at a monitoring place. Infrared rays from light sources 2 and 3 are selected by change-over switches 14, 15, respectively, through their respective optical fibers to suply them to each cell assembly. Transmission lights from the selected cell assemblies are changed over by change-over switches 25 and 26 through their respective optical fibers to supply them to a detector 6. As noted above, an expensive electric circuit component is commonly located at the monitoring place, and this enables reducing of a device price.
JP7608881A 1981-05-20 1981-05-20 Centralized monitoring device for gas concentration Pending JPS57190252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7608881A JPS57190252A (en) 1981-05-20 1981-05-20 Centralized monitoring device for gas concentration

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7608881A JPS57190252A (en) 1981-05-20 1981-05-20 Centralized monitoring device for gas concentration

Publications (1)

Publication Number Publication Date
JPS57190252A true JPS57190252A (en) 1982-11-22

Family

ID=13595072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7608881A Pending JPS57190252A (en) 1981-05-20 1981-05-20 Centralized monitoring device for gas concentration

Country Status (1)

Country Link
JP (1) JPS57190252A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1722214A1 (en) * 2005-05-13 2006-11-15 Tyco Electronics Raychem GmbH Gas sensor arrangement and measuring method for improving long-term stability
GB2438724A (en) * 2006-06-02 2007-12-05 Tq Environmental Plc Gas monitoring system
RU2573112C2 (en) * 2010-04-09 2016-01-20 Инфикон Гмбх Test device for leak detection in several test points

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1722214A1 (en) * 2005-05-13 2006-11-15 Tyco Electronics Raychem GmbH Gas sensor arrangement and measuring method for improving long-term stability
US7244940B2 (en) 2005-05-13 2007-07-17 Tyco Electronics Raychem Gmbh Gas sensor arrangement and measuring method for improving long-term stability
GB2438724A (en) * 2006-06-02 2007-12-05 Tq Environmental Plc Gas monitoring system
GB2438724B (en) * 2006-06-02 2010-03-03 Tq Environmental Plc Gas monitoring system
RU2573112C2 (en) * 2010-04-09 2016-01-20 Инфикон Гмбх Test device for leak detection in several test points

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