Patent ID: 9410922
Filing Date: 2016-08-09
CPC Classification: G01N

Claim Text:
1. A method for adjusting a gas sensor configured to determine a concentration of a gas component in a measuring gas chamber, the gas sensor having at least one hollow chamber which is connected to the measuring gas chamber via a diffusion barrier, and the gas sensor having at least one electrochemical pump cell for electrochemically pumping the gas component into and out of the hollow chamber, the method comprising: providing at least two pumping-in phases in which the gas component is pumped into the hollow chamber by the electrochemical pump cell, wherein a characteristic parameter regarding the pumping-in is predefined differently in the at least two pumping-in phases; providing at least two pumping-out phases in which the gas component is pumped out of the hollow chamber by the electrochemical pump cell; and generating, on the basis of at least one feature of the pump current during the at least two pumping-out phases, an adjustment value of (i) a limiting current of the electrochemical pumping-out from the hollow chamber for a defined measuring gas composition or (ii) a diffusion resistance of the diffusion barrier for a defined measuring gas composition.