| 摘要 |
The invention relates to a probe ( 100, 200, 300, 400, 500, 600 ) for the measurement of the oxygen activity of metal melts, in particular steel melts, comprising a reference substance ( 2 ) of known oxygen activity in electrically conducting contact ( 3 ) with a measuring device; and comprising a solid electrolyte predominantly oxygen ion conducting and negligibly electron conducting at high temperatures and separating the reference substance ( 2 ) from the metal melt and having an entry surface ( 4 ) for oxygen ions which is in contact with the metal melt, wherein the entry surface ( 4 ) of the probe ready for operation is covered by a functional foil arrangement ( 10,20 ) in close contact to the entry surface ( 4 ).
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