Use and Maintenance of Electrochemical Gas Sensors in Flue Gas Analyzers Flue gas analyzers are instruments for gas detection of harmful gases such as sulfur dioxide, nitric oxide, nitrogen dioxide, carbon monoxide, etc. and oxygen content. It is used to monitor the pollution of fuel oil and gas boilers, flue gas and the environment near the pollution source. The gas sensor is the core of the flue gas analyzer to detect the gas, and the most commonly used gas sensors are electrochemical sensors.
The performance of the electrochemical gas sensor is relatively stable, the life is long, the power consumption is very small, the response to the gas is fast, and it is not affected by humidity. The resolution can generally reach 0.1 μmol / mol (which varies with the sensor). Its temperature adaptability is also relatively wide (sometimes it can work between -40 ℃ and 50 ℃). However, it is also greatly affected by changes in reading temperature. So many instruments have software and hardware temperature compensation processing. At the same time, the electrochemical sensor has the advantages of small size, simple operation, convenient portability, can be used for on-site monitoring and low cost. Therefore, in the current various gas detection equipment, including flue gas analyzers, electrochemical gas sensors are very important status.
1 Principle and structure of common electrochemical sensors
2 How to scientifically extend the service life of electrochemical sensors
3 How to ensure the accuracy of the instrument
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