• 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

Specifications

• Sensor Type Semiconductor


• 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)


• RH Related humidity less than 95%Rh


• O2 Oxygen concentration is 21% (standard condition) - Oxygen concentration can affect sensitivity


• Load resistance: 20K?


• Sensing Resistance Rs: 10K?- 60K? (1000ppm CH4)


• Preheat time:Over 24 hour


• Standard Encapsulation Bakelite, Metal cap

MQ-4 Equivalent Sensors

• Used in gas leakage detecting equipment for homes and industry. They are suitable for detecting of CH4 and CNG.


• Industrial Combustible gas detector


• Portable gas detectors