System and Method for Updating a Baseline Output of a Gas Sensor
First Claim
1. A method of operating a NOx sensor, wherein the sensor includes a pumping electrode configuration and a measuring electrode configuration, the method comprising:
- applying a first measuring voltage across the measuring electrode configuration sufficient to electrochemically remove O2 from the sensor without electrochemically removing NOx from the sensor; and
applying a second measuring voltage across the measuring electrode configuration sufficient to electrochemically remove NOx from the sensor.
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Abstract
A method of operating a gas sensor is disclosed, wherein the sensor includes a pumping electrode configuration and a measuring electrode configuration, and wherein the method includes operating the sensor in a first mode in which a first, lower pumping potential sufficient to electrochemically remove an interfering compound from the sensor without electrochemically removing the analyte from the sensor is applied across the pumping electrode configuration and a measuring potential sufficient to electrochemically remove the analyte from the sensor is applied across the measuring electrode configuration; and operating the sensor in a second mode in which a second, higher pumping potential sufficient to electrochemically remove the analyte from the sensor is applied to the pumping electrode configuration.
8 Citations
6 Claims
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1. A method of operating a NOx sensor, wherein the sensor includes a pumping electrode configuration and a measuring electrode configuration, the method comprising:
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applying a first measuring voltage across the measuring electrode configuration sufficient to electrochemically remove O2 from the sensor without electrochemically removing NOx from the sensor; and applying a second measuring voltage across the measuring electrode configuration sufficient to electrochemically remove NOx from the sensor. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification