MQ-4 Methane Gas Sensor Natural Coal Co Methane Detector Module for Arduino
Sensitive material of MQ-4 gas sensor is Methane, 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-4 gas sensor has high sensitity to Natural gas, Methane, and could be used to detect both Methane and Propane. The sensor could be used to detect different combustible gas especially Methane, it is with low cost and suitable for different application.
The input voltage: DC5V power (current) : 150 mA
The DO output: TTL digital quantity 1 s and 0 s (0.1 and 5 v)
AO output: 0.1-0.3 V (relative pollution-free), the highest concentration of the voltage is 4 V or so
Special remind: sensor, after the power supply need to preheat the 20 s, that are stable, the measured data of sensor heat belongs to the normal phenomenon, because of internal heating wire, if hot is not normal.
1: High quality double panel design, with the power indicator and TTL signal output
2: Have DO switch signals (TTL) and AO output analog signal output
3: TTL output valid signal for low level. (when the low output electric signal lights at ordinary times, can be directly pick up SCM or relay module)
4: The analog output voltage, the higher the concentration, the higher the voltage.
5: The methane, gas detection has better sensitivity.
6: There are four screw holes to facilitate positioning
7: Product appearance size: 32 (L) 20 (W) 22 (H)
8: Has long service life and reliable stability
9: Rapid response recovery features
Suitable for family or factory of methane gas, natural gas monitoring devices, such as testable natural gas, methane, 300 to 10000 parts per million (PPM)