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Introduction to MQ-6 Sensor

The gas sensing material used in MQ-6 gas sensors is tin dioxide (SnO2) with low conductivity in clean air. When there is combustible gas in the environment where the sensor is located, the conductivity of the sensor increases with the increase of combustible gas concentration in the air. The change in conductivity can be converted into an output signal corresponding to the gas concentration using a simple circuit. The MQ-6 gas sensor has high sensitivity to propane, butane, liquefied petroleum gas, and also has good sensitivity to natural gas. This sensor can detect various flammable gases and is a low-cost sensor suitable for multiple applications.

Module application

Suitable for detecting LPG (liquefied petroleum gas), butane, propane, LNG (liquefied natural gas) in households or industries. Excellent resistance to ethanol vapor and smoke interference.

Module features

1. Adopting high-quality dual panel design, with power indication and TTL signal output indication;

2. Equipped with DO switch signal (TTL) output and AO analog signal output;

3. TTL outputs a valid signal at a low level. When the signal light is on when the output is low, it can be directly connected to a microcontroller or relay module

4. Analog output voltage of 0-5V, the higher the concentration, the higher the voltage.

5. Has good sensitivity for detecting propane, butane, LPG, and LNG.

6. There are four screw holes for easy positioning;

7. Product dimensions: 32 (L) * 20 (W) * 22 (H)

8. Long term service life and reliable stability

9. Quick response and recovery features

Electrical performance

Input voltage: DC5V Power consumption (current): 150mA

DO output: TTL digital quantities 0 and 1 (0.1 and 5V)

AO output: 0.1-0.3V (relatively pollution-free), concentration voltage around 4V

Special reminder: After the sensor is powered on, it needs to be preheated for about 20 seconds for the measured data to stabilize. Sensor heating is a normal phenomenon because there are electric heating wires inside. If it is hot, it is not normal.

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