MQ 8 Gas Sensor
Hydrogen Gas Sensor
This is a simple-to-use hydrogen gas sensor, suitable for sensing hydrogen concentrations in the air. The MQ-8 can detect hydrogen gas concentrations anywhere from 100-10000ppm.
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.
Main chip: the LM393
working voltage: DC 5V
Analog 0 ~ 5 v voltage, the higher the concentration, the higher the voltage.
Very sensitivity to hydrogen
Can be resistant to ethanol steam, LPG (petroleum), smoke interference
Has a long service life and reliable stability
Has quick response recovery features