| abstract |
The invention relates to a gas sensor for determining thenConcentration of a gas component of a measuring gas, in particularnof a sample gas, which is caused by a combustion ornReforming process is formed, the gas sensornHas layer structure and a reference electrode (10)nand a catalytically active working electrode to be exposed to the measuring gasn(12).n n n According to the invention, the reference electrode (10) is completely surrounded by gas-tight material (14, 16; 16, 18). |