High-temperature sensor made of metal of the platinum group
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United States of America Patent
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Jul 4, 1995
Grant Date -
N/A
app pub date -
Jul 15, 1993
filing date -
Feb 15, 1991
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Abstract
A rapid temperature sensor formed of a metal from the platinum group is provided. The rapid temperature sensor includes a substrate over which a platinum resistive layer is provided. A double layer, forming a passivation layer, is provided over the platinum resistive layer to prevent oxidation. The double layer includes a ceramic layer and a glass layer. The double layer prevents oxygen from reaching the platinum resistive layer even at temperatures up to 1,000.degree. C.
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