Patent ID: 7052595
Filing Date: 2006-05-30
Classification: G01N

Abstract:
1. A gas sensor system for determining a concentration of nitrogen oxide in a gas mixture, comprising: a gas sensor; and a device configured to detect nitrogen oxide in conjunction with the gas sensor amperometrically; said gas sensor comprising at least one electrochemical measuring cell, a measurement signal of the at least one electrochemical measuring cell determining the concentration of the gas component, the at least one electrochemical measuring cell including a first electrode and at least one additional electrode, wherein at least one of the first electrode and the at least one additional electrode is applied to a solid electrolyte made of ZrO wherein the material includes a lanthanum-containing perovskite having the composition La wherein the first electrode and the at least one additional electrode are interconnected as a pump cell; and a measured pump current measured by the device connected to the pump cell includes a measure of a concentration of the nitrogen oxide present in the gas mixture.