| 摘要 |
PURPOSE:To provide a gas sensor which facilitates the drawing of a lead from an electrode without impairing functions of a gas permeable film while eliminating changes in resistance value of the electrode, effect of changes in the temperature and humidity of the environment, hourly changes in the accuracy of the sensor and attitude difference in the accuracy of the sensor concerning a constant potential electrolyte type gas sensor so arranged to separate the gas permeable film from an electrode catalyst. CONSTITUTION:A working pole 21, an opposed pole 23 and a control pole 24 are arranged in a reaction chamber filled with an electrolyte 26 to make a gas to be inspected act on the working pole 21. In a constant potential electrolyte type gas sensor of such a type, the working pole 21 is separated from a gas permeable film 20. Thus, the gas permeable film 20 and the working pole 21 are arranged on one side of the gas sensor through a water permeable porous material 22 while the opposed pole 23 and a control pole 24 on the other side thereof. |
