| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure reducing device of sampling gas, capable of gradually reducing pressure without flocculating a gaseous substance contained in the sampling gas, and also capable of being miniaturized. SOLUTION: The gas pressure reducing device 3 allows flow of the sampling gas, which contains the gaseous substance being a sampling target sampled from a pipeline 1, through a sampling part 2 to thereby reduce the pressure of the sampling gas to predetermined pressure. The device includes a pressure reducing pipeline 3a, which is constituted by spirally winding the pipeline allowing the sampling gas to flow. COPYRIGHT: (C)2011,JPO&INPIT
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