Principle Introduction:
Winsen Electronics, produces sulphur dioxide/SO2 gas sensor, by measuring current based on the electrochemical principle, for industrial use.
ME3-SO2 electrochemical sensor detect gas concentration by measuring current based on the electrochemical principle, which utilizes the electrochemical oxidation process of target gas on the working electrode inside the electrolytic cell, the current produced in electrochemical reaction of the target gas are in direct proportion with its concentration while following Faraday law, then concentration of the gas could be get by measuring value of current.

Applications :
Widely used in industrial and environmental protection fields.

Technical parameters :

Tips:For more parameter information, please refer to the latest manual provided by salesman.

Item	Parameter
Detection gas	SO2 sensor, sulphur dioxide gas sensor
Measurement Range	0～20ppm
Max detecting concentration	150ppm
Sensitivity	（0.55±0.15）µA/ppm
Resolution ratio	0.1ppm
Response time（T90）	＜30S
Bias voltage	0mV
Load resistance（recommend）	10Ω
Repeatability	＜2﹪output value
Stability（／month）	＜2﹪
Output Linearity	linear
Zero drift（-20℃～40℃）	≤0.2ppm
Storage temperature	-20℃～50℃
Storage Humidity	15﹪～90﹪RH
Pressure range（kPa）	90-110
Anticipated using life	2 years（In air）

External dimension:

Reference Circuit :

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