| 摘要 |
PURPOSE:To enable measurement with good reproducibility and stability immediately even after the long-term interruption of the measurement by providing a high-temp. holding means to the mixture in a film container. CONSTITUTION:A powder mixture 2 is packed into the pressure resistant container 1 formed of an oxygen ion conductive ceramics film having liquid impermeability. An electrode lead wire 3 consisting of an electron conductor, a resistance heater 5 and a temp. sensor 6 are embedded into the powder mixture 2 and the open end is sealed by a sealant 4. The powder mixture 2 is a mixture composed of the particles of a metal and the oxide of this metal or a mixture composed of two kinds of the oxides of the same metal which are different in metal valency. The electrode is constituted in such a manner and the heater 5 and the sensor 6 are used in combination with a power supply and a power supply controller. The potential responds immediately after the restart of the measurement even after the ambient temp. of the film electrode falls over a long period of time even if the powder mixture 2 is maintained in the prescribed measurement temp. range of a high temp. even during the interruption of the high-temp. measurement. |
