JPS5654338A - Simple checker of gas analyzer - Google Patents
Simple checker of gas analyzerInfo
- 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
Links
- 230000035945 sensitivity Effects 0.000 abstract 3
- 239000003990 capacitor Substances 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
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.
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)
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 |
-
1979
- 1979-10-11 JP JP13160579A patent/JPS5654338A/en active Granted
Cited By (2)
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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