Method and device for measuring the oxygen content or the partial oxygen pressure in a gas to be measured

摘要

The method involves reducing oxygen partial pressure of a reference volume through a solid electrolyte cell (4) to be operated in a pump mode in a first phase of a measurement cycle until the oxygen partial pressure is lower than oxygen partial pressure of measurement gas. Measurement voltage utilized in a measurement phase for determining oxygen partial pressure or oxygen content of the measurement gas is determined by an oxygen partial pressure quotient between the partial pressure of the measurement gas and the oxygen partial pressure of reference gas. An independent claim is also included for a device for measuring oxygen partial pressure or oxygen content in measurement gas in a measurement cycle using a solid electrolyte cell.