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US 6,617,956 B1Granted
Platinum temperature sensor and method for producing same
AssigneeSensotherm Temperatursensorik GmbH
InventorHeinrich Zitzmann
Life of this patent
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Abstract
A platinum temperature sensor comprises a ceramic substrate (4) and a platinum thin-film resistor (2) applied to a main surface of said ceramic substrate. A protective intermediate layer (14, 16) comprises a ceramic layer (14) which, at least in the area of the platinum thin-film resistor (2), is evaporated on the main surface of the ceramic substrate (4) over the full area thereof, and a sintered ceramic paste layer (16) which is applied to the evaporated ceramic layer (14). A protective glaze (18) applied to the protective intermediate layer (14, 16).
Claims4
A platinum temperature sensor comprising:
- a ceramic substrate;
- a platinum thin-film resistor applied to a main surface of said ceramic substrate;
- a protective intermediate layer comprising a ceramic layer which, at least in the area of the platinum thin-film resistor, is vapor deposited on the main surface of the ceramic substrate over the full area thereof, and a sintered ceramic paste layer which to the vapor deposited ceramic layer, said vapour deposited ceramic layer and said sintered ceramic paste layer being formed of the same material;
- and
- a protective glaze applied to the protective intermediate layer.
2 more elements
Dependencies are inferred from the claim text.