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Zirconia oxygen sensors are suitable for gas analysis applications

Zirconia oxygen sensors are suitable for gas analysis applications

2024-03-27

A gas analyzer is a precision instrument specially used to measure and analyze the composition, concentration and properties of various substances in the air . It is widely used in environmental protection , chemical industry, medical and health and other fields. It can detect toxic and harmful substances and pollution sources and monitor them. Selecting the appropriate oxygen sensor for your gas analysis application is necessary. A wide range of configurations are available, paired with the correct technology and ensuring correct use with gases or liquids.

By far, sensing technology is a major factor when choosing the right oxygen sensor. They can be separated based on their working principles, such as optical, paramagnetic, electrochemical and zirconia. Below, the editor of Gongcai.com will learn about the application of zirconia sensors in gas analysis through this article:

The basic structure of the zirconia oxygen sensor is a zirconia ceramic tube, which uses the oxidation-reduction reaction of zirconia at high temperatures to generate an oxygen concentration difference electromotive force to measure oxygen content. Zirconia Oxygen Sensor - SO-E2-960 in the zirconia electrolyte The carrier of current in the zirconia electrolyte is oxygen ions, so when voltage is applied to the zirconia electrolytic cell, oxygen is pumped to the anode through the zirconia disk. If a cap with a hole is added to the cathode of an electrolyzer, the rate of oxygen flow to the cathode is restricted. Limited by this rate, the current in the electrolyzer reaches saturation as the applied voltage gradually increases. This saturation current is called the limit current, which is proportional to the oxygen concentration in the surrounding environment.

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