Products
Alcohol Sensor
Application:
Portable alcohol detectorsProduct characteristics:
high sensitivitymDescription
The gas-sensitive material used in the MQ-D3B gas sensor is a semiconductor material with low conductivity in clean air. When alcohol vapor exists in the sensor's environment, the sensor's conductivity increases with the increase in the alcohol gas concentration in the air. A simple circuit can be used to convert the change in conductivity into an output signal corresponding to the gas concentration.
Specifications
| Model | MQ-D3B | ||
| type | Semiconductor gas sensor | ||
| Standard packaging | metallic packaging | ||
| tracer gas | Alcohol | ||
| Detection concentration | 20～500ppm | ||
| Standard circuit conditions | loop voltage | VC | ≤6V DC |
| heater voltage | VH | 0.9V±0.1V AC or DC | |
| load resistance | RL | adjustable | |
Sensor characteristics under standard test conditions | Zero point | Vo | 0.01-0.45V |
| sensitivity | Vs | 1.0-2.5V(125ppm alcohol) | |
| Concentration slope | α | ≤0.6(R300ppm/R50ppm alcohol) | |
| standard test conditions | Temperature, humidity | 20℃±2℃; 55%±5%RH | |
| Standard test circuit | VC :3.0V±0.1V； VH :0.9V±0.1V | ||
| preheating tim | Not less than 48 hours | ||
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