Electrochemical gas sensor

The invention relates to an electrochemical gas sensor. The electrochemical gas sensor has: a housing divided into a housing inner region and a housing outer region in a lateral direction by a partition wall extending in a height direction of the housing; a measuring electrode; a reference electrode; and a hydrophilic film. The measuring electrode and the hydrophilic membrane are arranged in the interior region of the housing. The hydrophilic membrane has a membrane arm for receiving a reference electrode. The membrane arm extends from the housing inner region into the housing outer region, so that the reference electrode is arranged in the housing outer region. 本发明涉及一种电化学的气体传感器。该电化学的气体传感器具有：壳体，该壳体沿横向方向被沿壳体的高度方向延伸的分隔壁划分成壳体内部区域和壳体外部区域；测量电极；参考电极；以及亲水膜。所述测量电极和所述亲水膜布置在所述壳体内部区域中。所述亲水膜具有用于接纳参考电极的膜臂。所述膜臂从壳体内部区域伸到壳体外部区域中，从而所述参考电极布置在壳体外部区域中。