MP-3B model with advanced planar construction is comprised of heater and metal oxide semiconductor material of subminiature Al2O3 ceramic plate, fetch out electrode down-lead, encapsulation in metal base and cap. When the target gas (alcohol) exists , The sensor’s conductivity is more higher along with the gas concentration rising. Please use simple electro circuit, Convert change of conductivity to correspond output signal of gas concentration.
Applications:
It is Used for detecting whether the driver and other people who drink alcohol, or detecting whether ethanol steamy exist in other places.
Feature:
- Lower consumption
- Small size
- Fast response and resume
- Highest sensitivity
- Excellent stability and long life
- Easy circuit and big signal output
- Excellent selectivity
- Heater consumption PH: ≤350mW
Specifications:
- Model: MP-3B
- Sensor Type: Flat surfaced semiconductor
- Standard Encapsulation: Metal cap
- Target Gas: Alcohol gas
- Detection range: 0~500ppm alcohol
- Loop Voltage Vc: ≤24V DC
- Heater consumption PH: ≤350mW
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Standard Circuit Conditions |
Loop Voltage |
Vc |
≤24V DC |
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Heater Voltage |
VH |
2.5V±0.1V AC or DC |
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Load Resistance |
RL |
Adjustable |
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Sensor character under standard test conditions |
Heater Resistance |
RH |
23.5Ω±4.5Ω (room tem.) |
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Heater consumption |
PH |
≤350mW |
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Resistance of sensitive material |
RS |
5KΩ～50KΩ(in50ppm C2H5OH) |
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Sensitivity |
S |
Ro(in air)/Rs(50ppm C2H5OH)≥3 |
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Concentration Slope |
α |
≤0.6(R300ppm/R50ppmC2H5OH) |
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Standard test conditions |
Tem. Humidity |
22℃±2℃；55%±5%RH |
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Standard test circuit |
Vc:2.5V±0.1V VH:2.5V±0.1V |
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Preheat time |
Not less than 48 hours |
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Packages Includes:
1 x Winsen MP-3B Flat Surfaced Alcohol Sensor
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