Gas sensor control system for ensuring an increased measurement accuracy

摘要

In the case of a gas sensor expensive system for a gas sensor, it comprises a first, second and third cell. The second cell generates an electric current of a second cell, which the oxygen concentration in the gas, and wherein the amount of oxygen, already by means of the first cell has been controlled. The third cell generates an electric current of the third cell, which the concentration of a preselected constituent of the gas, in which the amount of oxygen, already by means of the first cell has been controlled. A circuit of the second cell converts the electrical current of the second cell in a voltage as a current reading of the second cell. An electric current setting means generates a flux of a current regulated as a function of the current measuring value of the second cell, so that a circuit of the third cell the electrical current of the third cell minus the setting current into a voltage which the concentration of the preselected constituent of the gas represents.