Methane Gas Sensor MQ-4

Methane Gas Sensor MQ-4 info

About the Product

Methane Gas Sensor MQ-4 detects the concentration of methane gas in the air and ouputs its reading as an analog voltage. The concentration sensing range of 300 ppm to 10,000 ppm is suitable for leak detection. For example, the sensor could detect if someone left a gas stove on but not lit. The sensor can operate at temperatures from -10 to 50°C and consumes less than 150 mA at 5 V.

Connecting five volts across the heating (H) pins keeps the sensor hot enough to function correctly. Connecting five volts at either the A or B pins causes the sensor to emit an analog voltage on the other pins. A resistive load between the output pins and ground sets the sensitivity of the detector.

Product Description

• Good sensitivity to combustable gas in wide range
• High sensitivity to natural gas
• Long life and low cost
• Simple drive circuit

Technical Specifications

• Detection Gas: Natural Gas/Methane
• Concentration: 300-10000ppm
• Supply Voltage: ­­­­<24V
• Heater Voltage: 5.0V ± 0.2V
• Load Resistance: Adjustable
• Heater Resistance: 31Ω ± 3Ω
• Heater Consumption: <900mW

Videos

Documents

Methane gas sensor MQ-4 datasheet 

References

Pololu Web Site:

https://www.pololu.com/product/1633