| 摘要 |
<P>PROBLEM TO BE SOLVED: To maintain high oxygen compound concentration detection accuracy of an oxygen compound concentration detecting device. <P>SOLUTION: In this device having a pair of electrodes 8, 9, when a voltage having a value higher than the voltage by which an oxygen compound around one electrode is decomposed to start oxygen generation is applied between the electrodes, a current value Is, flowing between the electrodes corresponding to the amount of oxygen around one electrode, is detected. When a voltage, having a lower value than the voltage by which the oxygen compound around one electrode is decomposed to start oxygen generation, is applied between the electrodes, a current value Iso, flowing between the electrodes corresponding to the amount of oxygen around one electrode, is detected. Then, the concentration of the oxygen compound in gas is detected, based on the value determined by subtracting the current value Iso from the current value Is. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
