| 摘要 |
PURPOSE:To reduce misoperation along with a higher working efficiency, by a method wherein a high-concentration gas is sealed into a dilution container by a compressed gas from a first gas sampler to be diluted and them, it is made to flow to a second gas sampler to sample by an atmospheric pressure in the dilution container. CONSTITUTION:In the operation mode of measuring a high concentration gas from the upstream of an activated charcoal filter by dilution, the high- concentration gas converges to a passage 55 via a gas inlet 12, a passage 50 and a passage 55 while the high-concentration gas branched off the passage 50 does thereto via a passage 52, an automatic gas sampler 1-1, a passage 53 and a passage 54. When a start button is pressed, a solenoid value 9-1 is closed and the automatic gas sampler 1-1 turns to send the high-concentration gas to a dilution container 2 by a compressed air to be diluted therein under a pressure. After the dilution, the diluted sample moves to an automatic gas sampler 1-2 from the container by an internal pressure to be automatically measured repeatedly and upon the pressing of a stop button, a round of measurement is completed. |
