Description: MQ-4 Methane CNG Gas Sensor

MQ-4 MQ4 CH4 High Sensitivity Methane Gas Sensor MQ4 Methane Gas Sensor MQ-4 Natural Gas Sensor CNG Gas Detection Sensor Line Gas Sensor For Arduino Electronics Project

This is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane [CH4]) concentrations in the air. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm.

This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.

This sensor comes in a package similar to our MQ-3 alcohol sensor, and can be used with the breakout board below.

General Specifications:

• 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

• 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