Measuring apparatus for a component contained in exhalation

摘要

There is provided a measuring apparatus for alcohol contained in an exhalation, the measuring apparatus measuring concentration of alcohol with a high accuracy in a short time. An alcohol sensor is provided inside an air passage to measure concentration of alcohol contained in air passing through the air passage. The alcohol sensor has a sensing element for sensing alcohol and a heating element for heating the sensing element. A suction pump is provided to the air passage so as to suction air from an inlet of the air passage. The sensing element is situated inside an air trapping chamber so that the air flowing through the air passage does not directly hit the sensing element.