Electrochemical gas detector for the detection of gas traces

Abstract From the Canadian patent

An electrochemical gas detector based on an electrolytic measurement cell having a normally solid organic electrolyte. The gas component to be detected diffuses out of the gas chamber at a three phase border (electrolyte-electrode-gas chamber) and there causes a change in the electrochemical equilibrium. As a result in an outer closing circuit a measurable electrical current is produced. The electrolyte consists of an anhydrous organic gel with a very low vapour pressure. The gas chamber adjacent to the three phase border constitutes a partly sealed cavity, which is in communication with the gas atmosphere to be examined via an absorption filter selectively permeable to the measurement …