En sensor för syrekoncentration, en metod för framställning av en sådan och en metod att mäta syrekoncentrationen i vatten med hög temperatur och högt tryck

摘要

<P>PROBLEM TO BE SOLVED: To provide an oxygen concentration measuring instrument capable of smoothly performing measurement without causing a problem of long-time durability or heat shock properties in the measurement under a severe environment like high-temperature and high-pressure water, an oxygen concentration measuring method and a method for forming an oxygen concentration measuring sensor. Ž<P>SOLUTION: The oxygen concentration measuring instrument includes: oxygen ion conductive ceramics, the insulator provided in contact with one side of the oxygen ion conductive ceramics; and a sensor element part formed by integrally baking the inside reference electrode, which is arranged in contact with one side of the oxygen ion conductive ceramics and has a mixture of the metal powder embedded in the inner space part formed of the oxygen ion conductive ceramics and the insulator and set as the standard of oxygen partial pressure by thermal dissociation equilibrium and a metal oxide powder, and the outside electrode provided to the other surface of the oxygen ion conductive ceramics to be exposed to an outside environment to pelletize them. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž