Methane CNG Gas Sensor - MQ-4
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- Manufacturer: Sparkfun
- Order number: EXP-R05-184
- Manufacturer part number: SEN-09404
- country of origin: CN
- HS code: 90271010
- Weight (kg): 0.004
This is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas... more
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.