| 摘要 |
The invention relates to a calibrating gas generator for generating a calibrating gas with a pregiven concentration of a calibrating gas component. The calibrating gas generator includes two vessels through which gas can flow. These two vessels contain the calibrating gas component in a calibrating solution and are connected in series. The temperature of the calibrating solution is controlled to a constant value by a temperature control apparatus. In order to improve the constancy of temperature, one of the vessels is arranged at least partially within the other vessel and this other vessel is configured, at least in part, as a heat insulating jacket for the one vessel.
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