Oxygen analyzer with electrolytic sensor. Operating principle of electrolytic sensor is based on using of coulometry method whereby the oxygen containing in gas sample is recovered in electrochemical cell. As opposite to typical electrochemical sensor the material of electrodes of this measurement cell is not spent in the process of electrochemical reaction as they are not exposed to chemical changes in the course of oxygen concentration measuring. As a result of this, there is no necessity of periodical cell replacement or repair. • Five years warranty for the sensor. The sensor never requires periodical replacement. • Optional system Stab-El™ allows measuring the oxygen in the presence of acidic gases.