| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem in which the flow rate and the gas concentration of respiratory air are measured at the same time and synchronized to measure respiratory metabolism data of an oxygen uptake and the amount of carbon dioxide gas excretion or the like in an expired gas analysis, and in the measurement of the gas concentration, sample gas is transported to a gas analysis meter through a sampling circuit, thereby a certain transportation time is required, and a transportation time changes by the fluctuation of the state of the sample gas and a measurement environment, and an error in the expired gas analysis has been caused though a method or the like of a steady flow amount transportation of a sample gas has been used conventionally.SOLUTION: A control that makes a transport rate constant is performed, the fluctuation of a transportation time is eliminated, and an accurate expired gas analysis is enabled. |
