Methane CNG Gas Sensor Module MQ-4

DESCRIPTION: 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.

• Operating voltage 5V

• Operating current 40mA

• Both digital and analog output

• Popular sensor – a lot of examples available for different platforms

• Port explanation : AO for analog output, DO for digital output, GND for ground, VCC for 5V voltage input

DOCUMENTS

• SNS-MQ4 datasheet

• Setting up SNS-MQx sensors

• Experimenting with gas sensors and Arduino