METHOD AND EQUIPMENT FOR MEASURING 13CO2

PURPOSE:To measure the existance ratio of CO2 with high accuracy by diluting a sample gas of breath gas, etc. with N2 gas and by performing the measurement while keeping a constant CO2 density at all times. CONSTITUTION:A breath gas is passed to a mixing and buffer tank 3 with a proper carrier gas t...

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Bibliographic Details
Main Authors HISADA HIDEHO, KOKUBU NOBUHIKO, KURIHARA KOUICHI
Format Patent
LanguageEnglish
Published 20.01.1986
Subjects
ANTENNAS, i.e. RADIO AERIALS
BASIC ELECTRIC ELEMENTS
ELECTRICITY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:PURPOSE:To measure the existance ratio of CO2 with high accuracy by diluting a sample gas of breath gas, etc. with N2 gas and by performing the measurement while keeping a constant CO2 density at all times. CONSTITUTION:A breath gas is passed to a mixing and buffer tank 3 with a proper carrier gas through a sample gas introducing part 1. On the other hand N2 gas is passed to the tank 3 by N2 gas for dilution introducing part 2 connecting to a N2 bomb and dilutes the breath gas. A flow controller 4 for controlling the volume of N2 gas being introduced to the tank 3 is provided at the N2 gas introducing part 2 and the breath gas diluted by N2 gas in the tank 3 is led to the main body cell of a CO2 analyzer 5, and thereupon the absorption of CO2 and CO2 is measured, and the ratio of CO2/ CO2 and the existance ratio of CO2 are found.
Bibliography:Application Number: JP19840133541