MQ-9 Carbon Monoxide Combustible gas sensor module เซ็นเซอร์ตรวจจับแก๊สคาร์บอนมอนอกไซด์ CO และก๊าซที่ติดไฟได้

Features:

- For home or factory gas leakage monitoring devices, suitable for carbon monoxide and other combustible gases and monitoring devices

- High-quality, dual-panel design, with power indicator and TTL signal output instructions;

- DO switching signal(TTL) output and AO analog signal output

- TTL output valid signal is low. (When the output low signal light is on, it can be directly connected microcontroller or relay module)

- Analog output voltage:the higher the concentration,the higher the voltage

- Have better sensitivity to carbon monoxide detector

- Four screw holes,easy positioning

- Product Dimensions: 32 (L) * 20 (W) * 22 (H)

- Long life and stability

- Quick response and resume

 

Electrical performance:

- Input voltage: DC5V

- Power (current): 150mA

- DO output: TTL digital 0 and 1 (0.1 and 5V)

- AO Output: 0.1-0.3V (relatively clean), the highest concentration voltage is about 4V

- Special note: When the sensor is powered, it needs to be warmed up about 20S, so the measured data becomes stable, the heat sensor is a normal phenomenon, because its inside is with an electric wire, if not, unnomal.

 

Specifications

- Product Model:MQ-9

- Product Type:Semiconduct-gassensitive element

- Gas Detected:Carbon monoxide,Combustible gas

- Detectable Concentration:10-1000ppmCO, 100-10000PPM gas

Document : https://www.instructables.com/id/How-to-Calibrate-Use-MQ9-Gas-Sensor-W-Arduino/
GitHub : https://github.com/zapzrat/MQ-9