| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a gas sample chamber capable of rapidly measuring the concentration of the gas to be measured in an atmosphere and capable of preventing penetrated foreign matter from becoming the measuring obstruction of the concentration of the gas to be measured, and to provide a concentration measuring instrument equipped with the chamber. <P>SOLUTION: The concentration measuring instrument 1 is equipped with the gas sample chamber 2 and microcomputer. The gas sample chamber 2 is equipped with a measuring cell 6, a light source 7 and a light-receiving unit 8. An atmosphere movement permitting part 9, equipped with a plurality of through-holes 10, is provided in the measuring cell 6. The through-holes 10 are provided to the outer wall 6a, positioned at the upper part and the outer wall 6a positioned at the lower part to be opposed to each other in a vertical direction. The light source 7 emits infrared rays of the measuring cell 6, and the light-receiving unit 8 is equipped with a plurality of light-receiving devices 12 and condensing members 13. The light-receiving devices 12 receive the infrared rays from the light source 7 and the condensing members 13 condense infrared rays to the light-receiving devices 12. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
