| 摘要 |
PROBLEM TO BE SOLVED: To supply an apparatus for providing a measuring apparatus that secures detection sensitivity and has improved linearity in the measuring apparatus with a sample where with in concentration variations in measurement constitutes is large such as a nitrogen oxide in an exhaust gas mainly from a moving exhaust source such as an automobile and a fixed exhaust source such as a flue. SOLUTION: A plurality of dilution lines are joined to a sample introduction line, and each line is switched corresponding to a measurement range, thus introducing the mixture of both to a detection section. Further, common refined air is preferably used as a diluent gas and an ozone source gas. COPYRIGHT: (C)2004,JPO
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