A method for the protection of the measuring electrode of an electrochemical measuring cell and electrochemical measuring cell for the oxygen measuring

摘要

The deteriorating influence of sulfide environments on the sensing electrode of a conventional oxygen ion conductive solid electrolyte electrochemical cell is minimized by controllably introducing oxygen to the sensing electrode when the oxygen content of the environment to which the sensing electrode is exposed diminishes to a predetermined level, thereby avoiding undesirable cycling of the environment between oxidizing and sulfiding conditions.