| 摘要 |
In a sampling device for gas analyzers, a capillary system (8, 9) is provided for minute flow rates that can be changed over without producing a delay in response of a detector (2) by connecting a first branched passage (4) and a second branched passage (5) to a sample-supply passage (1) through a first changing-over valve (3). A second changing-over valve (6) is connected to a by-pass passage (7) at a downstream joint of said two branched passages (4, 5), connecting the capillaries (8, 9) to said first branched passage (4) and said second branched passage (5), respectively, and connecting the detector (2) to the downstream sides of these capillaries (8, 9). |
