| 摘要 |
PURPOSE:To provide a sensor for measuring quantity of hydrogen dissolved in molten metal capable of preventing corrosion due to the molten metal, flux or the like and surely obtaining electric connection between a measuring electrode and the molten metal. CONSTITUTION:A solid electrolyte member 1 is formed to be a pipe of which one end is closed with a proton-conductive ceramics or a glass. Porous electrodes 2a, 2b are provided on the outer and inner surfaces of the solid electrolyte member 1 as a measuring electrode and a reference electrode, respectively. A conductive sleeve 3 made from graphite is fitted to the opening side of the solid electrolyte member 1. The sleeve 3 is filled with a filer 12 consisting of alumina powder. The porous electrode 2a is electrically connected to the sleeve 3 via a drawing electrode 2c. |
