Oxygen sensor is the use of ceramic sensitive elements to measure the oxygen potential in various heating furnaces or exhaust pipes, calculate the corresponding oxygen concentration by the principle of chemical balance, to monitor and control the combustion air-fuel ratio in the furnace, to ensure product quality and exhaust emission standards of measuring elements, widely used in all kinds of coal combustion, oil combustion, gas combustion and other furnace atmosphere control.
The oxygen sensor works similarly to a battery, with the element zirconia in the sensor acting like an electrolyte. The basic working principle is: Under certain conditions (high temperature and platinum catalysis), the oxygen concentration difference between the inside and outside of the Hao oxide is used to generate a potential difference, and the greater the concentration difference, the greater the potential difference. The content of oxygen in the atmosphere is 21%, the exhaust gas after concentrated combustion actually does not contain oxygen, and the exhaust gas generated after the combustion of the dilute mixture or the exhaust gas generated by the lack of fire contains more oxygen, but it is still much less than the oxygen in the atmosphere.
