Sensitive material of MQ-6 gas sensor is SnO2, which with lower conductivity in clean air. When the target combustible gas exist, The sensors conductivity is more higher along with the gas concentration rising. Please use simple electrocircuit, Convert change of conductivity to correspond output signal of gas concentration.
MQ-6 gas sensor has high sensitity to Propane, Butane and LPG, also response to Natural gas. The sensor could be used to detect different combustible gas, especially Methane, it is with low cost and suitable for different application.
Features Size32mm X22mm X27mm ICLM393MQ-6 Sensor Work voltageDC5V Instructions with the signal output; Analog + TTL output; TTL output signal is low effective; 0 ~ 5V analog output voltage, the higher the voltage the higher the concentration; Liquefied petroleum gas, butane, propane with high sensitivity and good selectivity; Service life and reliable long-term stability