| 摘要 |
PROBLEM TO BE SOLVED: To provide a suspended particulate matter concentration measuring instrument, easy to install and enabling a filter to be mounted thereon for performing base line test, by employing an impact-type sampler designated for PM 2.5 measurement as a size grader. SOLUTION: This instrument has the impact-type sampler 4 having a sample bring-in part 8 enabling a sample gas S to be brought-in right downward with a piping connection part 6 formed in a center part and a measuring part 18 for measuring the concentration of the suspended particulate matter in the sample gas S having passed through the sampler 4. COPYRIGHT: (C)2004,JPO
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