MQ303 Sensor
- Gas: Alcohol ( ethanol )
- Detection range : 20 to 1000ppm
- Characteristics of gas: 125ppm alcohol
- Sensitivity: R in air / Rin typical gas 3
- Sensing Resistance: 4 to 400K in air atmosphere
- Response time : 10s (70% Response)
- Recovery time : 30s (70% Response)
- Heating resistor: 4.5 Ω ± 0.5 Ω
- Heating current: 130mA
- Heating voltage : 0.9V ± 0.10V
- Heating power: 130mW
- Measure the voltage: 24V
- concentration range: 20 to 10,000 ppm
- Working conditions :
- -Â Â Â Ambient temperature : -20 ~ +55
- Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â -Â Â Â Humidity: 95% RH
- Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â -Â Â Â Environmental oxygen content: 21%
- Storage conditions :
- Â Â Â Â Â Â Â Â Â Â Â -Â Â Â Temperature : -20 ~ +70
- Â Â Â Â Â Â Â Â Â Â Â -Â Â Â Humidity: 70% RH
- High sensitivity
- Fast response and resume
- Long life and low cost
- For ethanol, vapour has high sensitivity and good selectivity
- Simple drive circuit
- Dimensions: 60mm x90mm x9mm
- Weight: 5g