JPS53105286A - Gas densitometer - Google Patents

Gas densitometer

Info

Publication number
JPS53105286A
JPS53105286A JP1987377A JP1987377A JPS53105286A JP S53105286 A JPS53105286 A JP S53105286A JP 1987377 A JP1987377 A JP 1987377A JP 1987377 A JP1987377 A JP 1987377A JP S53105286 A JPS53105286 A JP S53105286A
Authority
JP
Japan
Prior art keywords
gas densitometer
shutters
drift
control circuit
providing
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
JP1987377A
Other languages
Japanese (ja)
Inventor
Kohei Noro
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1987377A priority Critical patent/JPS53105286A/en
Publication of JPS53105286A publication Critical patent/JPS53105286A/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
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G01N21/274—Calibration, base line adjustment, drift correction

Abstract

PURPOSE:To automatically correct span and drift and obtain stable measurement accuracy by providing a standard light source, shutters, a phase detector, an automatic gain control circuit, etc., and making light detection signals constant.
JP1987377A 1977-02-25 1977-02-25 Gas densitometer Pending JPS53105286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987377A JPS53105286A (en) 1977-02-25 1977-02-25 Gas densitometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987377A JPS53105286A (en) 1977-02-25 1977-02-25 Gas densitometer

Publications (1)

Publication Number Publication Date
JPS53105286A true JPS53105286A (en) 1978-09-13

Family

ID=12011323

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987377A Pending JPS53105286A (en) 1977-02-25 1977-02-25 Gas densitometer

Country Status (1)

Country Link
JP (1) JPS53105286A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01248041A (en) * 1988-03-29 1989-10-03 Shimadzu Corp Chemical luminescence no meter
JPH02146356U (en) * 1989-05-15 1990-12-12
JPH02146355U (en) * 1989-05-15 1990-12-12

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01248041A (en) * 1988-03-29 1989-10-03 Shimadzu Corp Chemical luminescence no meter
JPH02146356U (en) * 1989-05-15 1990-12-12
JPH02146355U (en) * 1989-05-15 1990-12-12

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