| 摘要 |
PURPOSE:To provide both accuracy and responsiveness even in a low-temp. atmosphere by providing a porous body (porous catalyst carrier) on which a catalyst to put a gas to be measured in a nonequil. state into an equil. state separately from a porous protective layer. CONSTITUTION:Planar solid electrolytes 1 to 3 are laminated and integrated to form one planar solid electrolyte body. A measuring electrode 10 and a reference electrode 11 are provided on both surfaces of the electrolyte 1 in contact with the planar solid electrolyte body. A groove 5 for air introduction is provided in the central part of the electrolyte 2 in order to expose the electrode 11 to a reference gas, such as air. The porous protective layer 21 is provided on the electrode 10 and is laminated and integrated with the electrolyte 1 which constitutes a base plate. The porous catalyst carrier 22 having the effect of putting the nonequiv. gas into the equil. state is provided by being laminated and integrated with the electrolyte 3 on the opposite side of the protective layer 21. The electrode 10 and the electrode 11 are connected via a lead pattern or lead wires to a voltmeter 51, by which the electromotive force based on the difference in the partial pressures of the gases on the respective electrodes is measured. |
