| 摘要 |
<p>PROBLEM TO BE SOLVED: To collect insulation gas free of air mixing due to an external factor in a gas sampler. SOLUTION: A valve element 7 of a sampling port body 2 is opened by pushing an operation rod 16 of a sampler 3. When an air vent hole 19 of the operation rod 16, an air vent hole 14 of a piston 12, and a valve 11 of an outer cylinder 11 are communicated with each other, excess air in the sample is discharged. When an air space is made in an outer cylinder 9 by closing the valve 11 and withdrawing a piston 12, insulation gas is introduced there. When the operation rod 16 is further moved, and the hole 19 is sealed, the above gas is sealed.</p> |
