The gas sensing material used in the MQ-3 gas sensor is tin dioxide (SnO2) with lower conductivity in clean air. When the sensor
When there is alcohol vapor in the environment, the conductivity of the sensor increases with the concentration of alcohol in the air. Simple to use
The circuit converts the change in conductivity into an output signal corresponding to the gas concentration. MO-3 gas sensor for the spirit of alcohol
High sensitivity, can resist the interference of gasoline, smoke and water vapor. This sensor can detect a variety of concentrations of alcohol, it is suitable
Low cost sensor for multiple applications.
Uses: Used for motor vehicle drivers who are drinking alcohol and other on-site inspections of people who are not allowed to drink; also used in other places
Detection of ethanol vapor.
signal type:Analog signal
Detection range:10-1000ppm alcohol
Characteristic gas:125ppm alcohol
Heating voltage:5 士 0.2V (AC.DC)
Clean air voltage:<=1.5V
Sensitivity:Rin air/Rin typical gas>=5
Component power consumption:<=0.9W
Service life:5 years