Gas Sensor MQ-4 Methane Gas Sensor Natural Coal Co methane detector

Gas Sensor MQ-4

Sensor  ตรวจจับก๊าซ CNG ,NGV ใช้งานได้ทั้ง Analog output และ Digital Output  โดย  Digital output จะให้ค่าเป็น High เมื่อเกินค่า R ที่ตั้งไว้

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.

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.

Documents:

• Datasheet
• Wiring Example