FORFARANDE VID BESTEMNING AV SYRGASPARTIALTRYCKET I ETT MEDIUM FOR KOMPENSERING AV DRIFT HOS SYRGASELEKTRODEN SAMT ANORDNING FOR GENOMFORANDE AV FORFARANDET

摘要

Disclosed is apparatus and method for continuously compensating for electrode drift during the measurement of the partial pressure of oxygen by the net charge transport technique. The apparatus derives a correction factor from variations in waveforms representing charge returned from an electrochemical cell after successive interrogating voltage pulses. These wave-forms are independent of oxygen partial pressure but dependent on electrode parameters thereby permitting drift to be monitored and oxygen partial pressure measurements to be corrected.