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20200911· MQ4 Methane Sensor Overview. At the heart of the MQ4 is a heater and electrochemical sensor. When the target gas enters the membrane and reaches the sensor, it undergoes a redox reaction which creates current. This current is stronger for sensors at specific gases. In the case of the MQ4, it’s more sensitive to methane, butane and propane.


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TECHNICAL DATA MQ4 GAS SENSOR

The enveloped MQ4 have 6 pin ,4 of them are used to fetch signals, and other 2 are used for providing heating current. Electric parameter measurement circuit is shown as E. Sensitivity characteristic curve sensitivity characteristics of the MQ4 SENSITVITY ADJUSTMENT Resistance value of MQ4 is difference to various kinds and various concentration gases. So,When using this ...


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MQ4 gas methane sensor module for arduino MQ4 Smoke gas Detector Sensor module Product Overview: Sensitive material MQ 4 gas sensors used in clean air, low conductivity tin oxide (SnO2). When there is an environment in which the combustible gas sensor, conductivity sensor with increasing concentration of combustible gases in air increases. Use simple circuit can convert the change in ...


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