| 摘要 |
A gas sensor is provided that is delimited from the environment with a preferably replaceable cap ( 8 ) made of a porous, gas-permeable and water-impermeable material, especially sintered PTFE. The gas sensor is protected against environmental moisture and can be permanently provided with the cap ( 8 ) and with a special calibrating adapter ( 9 ) both during the gas measurement and during the necessary calibration. Due to the special design of the cap ( 8 ) and the calibrating adapter ( 9 ), the gas sensor offers the possibility of remote calibration, which can be carried out with high accuracy and is independent from weather effects, especially wind.
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