| 摘要 |
The invention relates to a heat conductivity detector which has an electrically heatable heating filament (6) which is mounted in the middle of a channel (5) in such a way that a fluid can be circulated around it and which is maintained on two ends on two electrically conducting carriers (7,8) intersecting said channel. In order to prevent the heating filament from slackening at working temperature, at least one of the two carriers (7,8) is embodied in such a way that the distance thereof from the other carrier is greater in the region of the middle of the channel than in the region of the wall of the channel (9). As a result, as the temperature rises the middle areas of both carriers (7,8) on which the heating filament (6) is maintained, move away from each other so that the heating filament (6) is tightened. |
