JPS5654338A - Simple checker of gas analyzer - Google Patents

Simple checker of gas analyzer

Info

Publication number
JPS5654338A
JPS5654338A JP13160579A JP13160579A JPS5654338A JP S5654338 A JPS5654338 A JP S5654338A JP 13160579 A JP13160579 A JP 13160579A JP 13160579 A JP13160579 A JP 13160579A JP S5654338 A JPS5654338 A JP S5654338A
Authority
JP
Japan
Prior art keywords
gas
light
cells
supplied
contactless switch
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
JP13160579A
Other languages
Japanese (ja)
Other versions
JPS6325297B2 (en
Inventor
Masami Nakane
Kennosuke Kojima
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.)
Horiba Ltd
Original Assignee
Horiba 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 Horiba Ltd filed Critical Horiba Ltd
Priority to JP13160579A priority Critical patent/JPS5654338A/en
Publication of JPS5654338A publication Critical patent/JPS5654338A/en
Publication of JPS6325297B2 publication Critical patent/JPS6325297B2/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
    • G01N21/37—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using pneumatic detection

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 durability and response by obtaining an artificial output signal for sensitivity adjustment by exercising electric control over the quantity of light from a light source. CONSTITUTION:Bypass circuit 10 of light source 1A of the cross-flow system infrared-ray gas analyzer consisting of two light sources 1A and 1B, two cells 2A and 2B, double-push capacitor microphone type detector C, amplifier D, indicator E, etc., is provided with contactless switch Q made of a semiconductor and variable resistor R1. A pulse signal current of a period equal to substitute frequencies of measured gas and reference gas supplied to cells 2A and 2B in turn by a constant amount each during calibration is supplied to contactless switch Q as a base current. Consequently, contactless switch Q turns on-off on the basis of the supplied base current and quantities of light of light sources 1A and 1B change at the same period as a signal frequency in measurement to obtain an artificial output signal for sensitivity adjustment similar to that when zero gas and span gas are flowed to cells 2A and 2B by turns, so that the sensitivity will be calibrated on the basis of the signal.
JP13160579A 1979-10-11 1979-10-11 Simple checker of gas analyzer Granted JPS5654338A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13160579A JPS5654338A (en) 1979-10-11 1979-10-11 Simple checker of gas analyzer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13160579A JPS5654338A (en) 1979-10-11 1979-10-11 Simple checker of gas analyzer

Publications (2)

Publication Number Publication Date
JPS5654338A true JPS5654338A (en) 1981-05-14
JPS6325297B2 JPS6325297B2 (en) 1988-05-25

Family

ID=15061961

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13160579A Granted JPS5654338A (en) 1979-10-11 1979-10-11 Simple checker of gas analyzer

Country Status (1)

Country Link
JP (1) JPS5654338A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0396839A (en) * 1989-09-08 1991-04-22 Takagi Ind Co Ltd Concentration measuring instrument
JPH0396834A (en) * 1989-09-08 1991-04-22 Takagi Ind Co Ltd Concentration measuring instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0396839A (en) * 1989-09-08 1991-04-22 Takagi Ind Co Ltd Concentration measuring instrument
JPH0396834A (en) * 1989-09-08 1991-04-22 Takagi Ind Co Ltd Concentration measuring instrument

Also Published As

Publication number Publication date
JPS6325297B2 (en) 1988-05-25

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