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Products

CO Sensor

MQ-E2-CO-φ20 Electrochemical CO Sensor

for commercial CO monitoring

Application:

Widely used in commercial especially civil field for CO concentration monitoring

Product characteristics:

Be stable
Anti-jamming
High accuracy
High sensitivity
Wide linear range
Excellent repeatability
Low power consumption

1. Description

MQ-E2-CO-φ20 is the sensor of fuel battery type. By redox reaction, CO and Orelease charge and form the current. The value of current is proportional to the concentration of CO, and follow the Faradays Law. By testing the value of current, the concentration of CO is known.

2. Appearance and dimension

 

3. Technical specifications


MediaCO
Testing range0-1000ppm(2000ppm Max.)
Sensitivity>0.015μA/ppm
Resolution ratio0.5ppm
Load resistor120/200/300Ω
Repeatability<3% output value
Stability(per year)<10%
Output linearitylinearity
Zero drift(-20℃~+40℃)≤10ppm
Temperature range-20℃~+50℃
Humidity15%-90%RH
Response time<50s
Pressurestandard air pressure±10%


4.Test Circuit



5.Sensor Characterization



6.Precautions


 Soldering is prohibited during installation;

 Aging time should be no less than 48 hours before use;

 Pins must not be broken or bent;

 Electrolyte leakage will cause damage, please do not disassemble the sensor at will;

 Sensors should avoid contact with organic solvents (including silicone rubber and other adhesives), coatings, chemicals, oils and high-concentration gases;

 All electrochemical sensors should not be completely encapsulated with resin materials, nor should they be immersed in an oxygen-free environment for a long time, otherwise the performance of the sensor will be damaged;

 All electrochemical sensors should not be used in an environment containing corrosive gases for a long time, as corrosive gases will damage the sensor;

 When measuring the zero point of gas, it must be done in a clean atmosphere;

 When testing and applying the sensor, vertical air intake from the front should be avoided;

 The air intake hole of the sensor must not be blocked or contaminated;

 The sensor must not be subjected to excessive impact or vibration;

 Do not use if the shell is damaged or deformed;

 The recovery time is long when used in an environment with high concentration of the measured gas;

 The working electrode and the comparison electrode should be in a short-circuit state when the sensor is stored;

 It is forbidden to use hot melt adhesive or adhesive with curing temperature higher than 80℃ to encapsulate the sensor;

 It is forbidden to store and use in high concentration alkaline gas for a long time.



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