Working principle of sulfur dioxide sensor

Description :

　　The mining sulfur dioxide sensor can be used in various occasions underground, continuously monitoring, displaying, and exceeding the limit alarm of sulfur dioxide content in the airflow of various places underground, and outputting signals to provide monitoring data for the monitoring substation.

　　Working principle of sulfur dioxide sensor

　　Under a certain control potential, oxidation reaction occurs on the working electrode of sulfur dioxide. When the point control is sufficiently positive and the catalytic activity of the electrode is high enough, the oxidation reaction proceeds quickly. The total speed of the process is determined by the diffusion step of sulfur dioxide, and the generated signal current is proportional to the concentration of sulfur dioxide.

　　Working environment of sulfur dioxide sensor

　　Working temperature: 20~50 degrees Celsius

　　Working humidity: 15~90 [%] RH (non condensing)

　　Work pressure: 91~111kPa

　　Bias voltage: 0mV

　　Storage time: 6 months

　　Storage temperature: 0-20 degrees Celsius

　　Service life: 2 years

　　Characteristics and functions of sulfur dioxide sensors

　　It has the characteristics of high current sensitivity, short response time, low temperature and humidity influence, good stability, and low background noise. It can not only be used to measure sulfur dioxide in the air, but also in low conductivity liquids.

　　Parameters of sulfur dioxide sensor

　　Large transmission distance from sensors to associated and connected devices: 2km

　　The response time of the sensor should not exceed 35 seconds

　　Explosion proof mark: ExibI

　　Intrinsic safety parameters: Ui: 18.5 V; Ii：60 mA； Ci：0uF； Li：0mH

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• Sulfur dioxide sensor