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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 equilib

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 vapor 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 component. The length of the cavity is dimensioned so as to be so short that practically no back diffusion of the measurement component through the filter takes place.

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In an electrochemical gas detector for the detection of gas traces, means defining a gas chamber in communication with the atmosphere to be detected and an electrolytic measurement cell having a normally solid organic electrolyte adjacent to the gas chamber along a three phase boundary and electrode

In an electrochemical gas detector for the detection of gas traces, means defining a gas chamber in communication with the atmosphere to be detected and an electrolytic measurement cell having a normally solid organic electrolyte adjacent to the gas chamber along a three phase boundary and electrodes on opposite sides thereof and wherein the gas component to be detected diffuses out of the gas chamber to the three-phase boundary to effect a change in the electrochemical equilibrium resulting in a measurable electrical current in the electrodes, wherein the electrolyte comprises an anhydrous organic gel, which at temperatures of up to 60°has a vapor pressure of less than 1 Torr, and wherein the means defining the gas chamber comprises a partly sealed cavity and a sorption filter through which the gas chamber is in communication with the atmosphere to be detected, the filter being selectively permeable to the desired gas component to be detected with respect to the detected gas atmosphere, and spaced a given distance from the three phase boundary so as to be sufficiently close thereto to substantially prevent back diffusion of the desired gas component through the filter.