Apparatus and method for determining the partial pressure of a measuring gas in a gas chamber

摘要

A device for determining the partial pressure of a measuring gas in a measuring gas chamber (5) comprises a gas-selective pump cell having an ion conductor (2) arranged between pump electrodes (3, 4) impinged with a voltage. Measuring gas can be exchanged between the measuring gas chamber and the ion conductor via a first pump electrode (3) facing the measuring gas chamber. Also, measuring gas can be exchanged between the ion conductor and a gas-tight measuring gas storing unit (6) via a second pump electrode (4) facing away from the measuring gas chamber. An Independent claim is also included for determining the partial pressure of a measuring gas in a measuring gas chamber.