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.
- Additional Information
Processor No Architecture No Clock Speed No Digital Pins No Analog Pins No PWM Pins No Hardware UART No Programming Interface No Flash Memory No Operating Voltage No Power Output No Antenna No Range (Indoor/Urban) No Range (Outdoor/RF Line of Sight) No Channel Capacity No Frequency No Transmit Current @ 3.3V No