Joy-iT MQ3 Analog Alcohol sensor on basis of Hydrogen concentration

This analog gas alcohol sensor on basis of hydrogen concentration has a small heating part with an electronical chemical sensor.
It is suitable for indoor usage.
The sensor can output exact values only after warmup phase.

Caution: sensor gets hot while usage!

Technical data:

Measurement range: 100 - 1000 ppm

Measureable substances: Ethan, Alcohol over the concentration of hydrogen

Application areas: F.i. breath alcohol tester, robotic, microcontroller projects

Compatible with: Raspberry Pi (with AD-converter), Arduino. etc.

Special features: High sensitivity which can be adjusted by potentiometer, quick reaction time, low sensivity to benzine

Analog Output: Values are processed by the microcontroller

Digital Output: thresholds can be set

Pins: VCC: Voltage supply 5V, GND: Ground, AOUT: Analog Output, DOUT: Digital Output

Response time: ≤ 1 s

Pick time after power on: ≤ 30 s

Heating current: ≤ 150 mA

Heating voltage: 5 ±0.2 V / 1,5 ±0.1 V

Heating energy power: 750 mW