سنسور تشخیص گازهای طبیعی MQ-4

MQ-4 Methane Sensor
The sensitive material of the MQ-4 gas sensor is SnO2, which with lower conductivity in clean air.
When the target flammable gas exists, the sensor’s conductivity gets higher along with the gas concentration rising.
Users can convert the change of conductivity to correspond output signal of gas concentration through a simple circuit.
MQ-4 gas sensor has a high sensitivity to methane, also has anti-interference to alcohol and other gases.
It is low cost and suitable for different applications of detecting kinds of methane concentration gases.
Features
1. Responsive to Methane gases
2. Cost-efficient
3. Operating Voltage is +5V
4. Used to measure or detect Methane, Alcohol, and other gases
5. Can be used as a digital or analog sensor
6. Long life and low cost
7. Simple drive circuit