Electrochemical Device for Measuring Oxygen

Abstract

An electrochemical device for measuring oxygen in gases is described which utilizes a gold indicator electrode and a cadmium reference. Filled with electrolyte and encapsulated with a thin polyethylene membrane, this cell gives a current proportional to the oxygen partial pressure. The unit requires no power or polarizing voltage and can operate unattended for relatively long periods of time. Functional characteristics of the device are discussed in order to suggest potential applications.