MQ4 - Methane Natural Gas Sensor

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.

Technical Specification:

• Power requirements: VCC - 5V±0.1
• DO output: TTL digital 0 and 1 (0.1 and 5V)
• AO output: 0.1-0 .3 V (relative to pollution), the maximum concentration of a voltage of about 4V
• Detection Gas: Natural gas/Methane
• Detection Concentration: 200-10000ppm (Natural gas / Methane)
• Interface: 1 TTL compatible input (HSW), 1 TTL compatible output (ALR)
• Heater consumption: less than 750mw
• Operating temperature: 14 to 122 °F (-10 to 50°C)

Features:                                  

• Good sensitivity to Combustible gas in wide range
• High sensitivity to CH₄, Natural gas
• Small sensitivity to alcohol, smoke
• Fast response Stable and long life
• Simple drive circuit

Applications:          

• Used in gas leakage detecting equipment for homes and industry. They are suitable for detecting of CH₄and CNG
• Industrial Combustible gas detector
• Portable gas detectors