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Edit ContentMQ-Q3 Alcohol sensor
Category: Semiconductor Sensor
Publish Time: 2012-02-13 13:21
MQ-Q3 gas sensor has high sensitity to Alcohol, and has good resistance to disturb 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.
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Model No.
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MQ-Q3
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Sensor Type
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Semiconductor
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Standard Encapsulation
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Bakelite (Black Bakelite)
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Detection Gas
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Alcohol gas
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Concentration
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0.04-4mg/l alcohol
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Circuit
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Loop Voltage
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Vc
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≤24V DC
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Heater Voltage
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VH
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5.0V±0.2V AC or DC
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Load Resistance
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RL
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Adjustable
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Character
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Heater Resistance
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RH
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31Ω±3Ω（Room Tem.）
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Heater consumption
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PH
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≤900mW
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Sensing Resistance
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Rs
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2KΩ-20KΩ(in 0.4mg/l alcohol )
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Sensitivity
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S
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Rs(in air)/Rs(0.4mg/L Alcohol)≥5
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Slope
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α
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≤0.6(R300ppm/R100ppm Alcohol)
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Condition
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Tem. Humidity
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20℃±2℃；65%±5%RH
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Standard test circuit
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Vc:5.0V±0.1V；
VH: 5.0V±0.1V
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Preheat time
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Over 48 hours
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