Penetrating fluid device with reduced effect of ambient temperature

摘要

The invention relates to a permeable concentration measuring device with reduced effect of ambient temperature, wherein a concentration detector (2) in a liquid-flow space (12a) of a liquid circulation device (12) in a fuel cell system (1) is arranged to equality of the temperature of the concentration detector (2) and To achieve the liquid in the fuel cell and thus to reduce the error caused by the ambient temperature.