Appeal No. 2005-0086
Application No. 09/969,265
Claim 1, which is one of two independent claims, is
illustrative of the subject matter encompassed by the appealed
claims, and reads as follows:
1. A sensor element for determining a
concentration of at least one gas component in a gas
mixture, comprising:
at least one first electrode exposed to the at least
one gas component to be analyzed;
a second arrangement;
at least one reference electrode electrically
interconnected by a first solid electrolyte to the at least
one first electrode, wherein the second arrangement is
configured to measure an electric current at least one of
continuously and non-continuously between the at least one
first electrode and one of the at least one reference
electrode and a counterelectrode, in response to at least
one of the applying and the setting an electric voltage
between the at least one first electrode and the at least
one reference electrode due to a chemical reaction
proceeding at the at least one first electrode, the
concentration of the at least one gas component in the gas
mixture being determinable from the electric current; and
a first arrangement configured to at least one of apply
and set the electric voltage between the at least one first
electrode and the at least one reference electrode only
during recurring time intervals;
wherein the second arrangement is configured to measure
the electric current between the at least one first
electrode and one of the at least one reference electrode
and the counterelectrode, at least intermittently within the
recurring time intervals.
2
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