Zirconia oxygen sensor
US5277781A · kind A · utility
1Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1991 |
| Grant date | Jan 11, 1994 |
| Priority date | — |
| Expiry date | Jun 18, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/411
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A zirconia oxygen sensor for measuring oxygen potential in the molten bath of a metal or alloy having a melting point of 350-550.degree. C., which comprises a reference electrode which is of a substance having a melting point of the same level as or lower than the metal or alloy of which the oxygen potential is to be measured and being liquid at the measurement temperature and is open to the atmosphere, a vessel of a zirconia solid electrolyte containing 5-10% yttria or 10-20% of calcium oxide (CaO) and a lead wire which connects the reference electrode and said molten metal or alloy and its use are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.