Description
MQ-3 gas sensor has high sensitivity to alcohol, and has good resistance to disturbances of gasoline, smoke and vapor. The sensor could be used to detect alcohol with different concentration; it is with low cost and suitable for different application. Sensitive material of MQ-3 gas sensor is SnO2, which with lower conductivity in clean air. When the target alcohol gas exists, sensor’s conductivity is proportional to the gas concentration.
Features:
- Power Supply: 5VDC
- Model No: MQ-3.
- Heater voltage: 5±0.2V.
- Loop voltage: ≤24V (DC)
- Load resistance: Adjustable.
- Heating Resistance: 31Ω±3Ω (Room temperature).
- Surface thermal resistance: 2Kohm-20Kohm (0.4mg/L alcohol).
- Sensitivity: Rs (in air)/Rs (0.4mg/L alcohol) ≥
- Weight 8.5-g.
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