| 摘要 |
PROBLEM TO BE SOLVED: To provide a sensor with which nitrogen oxides and oxygen can be detected simultaneously. SOLUTION: A nitrogen oxide and oxygen detecting sensor is provided with a sensor element in which a detection part composed of a nitrogen oxide detecting cell (an NO cell) and of an oxygen detecting cell (an O2 cell) is formed on a porous substrate 6. The nitrogen oxides detecting cell is formed in such a way that an anode 8, a ZrO2 electrolyte 9 and a cathode 11 (a platinum electrode) are laminated sequentially. The oxygen detecting cell is formed in such a way that an anode 7, a ZrO2 , electrolyte 9 and a cathode 11 (a platinum-gold electrode) are laminated sequentially. The sensor is constituted simply, it is manufactured easily, and it can detect nitrogen oxides (e.g. NO) with good selectivity from a gas, to be measured, in which the nitrogen oxides and oxygen exist so as to be mixed. |
