Electric pressure pick-off
AssigneeRobert Bosch GmbH
InventorsDieter Eckardt, Hettich Gerhard
Life of this patent
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Abstract
A pressure pick-off for generating electrical signals comprises a reference pressure chamber which is oxygen-free, at least one pressure dependent deformable membrane closing the reference pressure chamber from a medium under pressure and supporting at least one electric sensor element, and a conductor located in the reference pressure chamber and connectable with a measuring current circuit, the conductor being formed so that during a leakage in the reference pressure chamber it is oxidized by penetrated oxygen so that it is electrically interrupted.
Claims8
A pressure pick-off for generating electrical signals, comprising means forming a reference pressure chamber which is oxygen-free;
- at least one pressure dependent deformable membrane closing said reference pressure chamber from a medium under pressure and supporting at least one electric sensor element;
- and a conductor located in said reference pressure chamber and connectable with a measuring current circuit, said conductor being formed so that during a leakage in said reference pressure chamber it is oxidized by penetrated oxygen so that it is electrically interrupted.
Dependencies are inferred from the claim text.