Product Introduction
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Alcohol Gas Sensor MP-3B Product Description
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The MP-3B semiconductor gas sensing element for alcohol detection uses advanced planar production technology, forming a heater and metal oxide semiconductor gas sensing material on a miniature Al2O3 ceramic substrate, with electrode leads extending out, encapsulated in a metal base and cap. When the target gas is present, the higher the concentration of the gas in the air, the higher the conductivity of the sensor. A simple circuit can convert this change in conductivity into an output signal corresponding to the gas concentration.
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Alcohol Gas Sensor MP-3BSensor Features
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All-solid-state semiconductor alcohol sensor
2.5V low voltage, low power consumption
High sensitivity and fast response and recovery characteristics
Excellent selectivity
Simple drive circuit
Excellent stability and long service life
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Alcohol Gas Sensor MP-3BMain Applications
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Used for alcohol supervision of motor vehicle drivers and other personnel in high-risk operations, and for detection of ethanol vapor in other places.
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Alcohol Gas Sensor MP-3BTechnical Specifications
| Model |
MP-3B |
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| Product Type |
Planar semiconductor gas sensing element |
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| Standard Package |
Metal |
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| Detection Gas |
Alcohol |
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| Detection Concentration |
0.04－4mg/L Alcohol |
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| Standard Circuit Conditions |
Circuit Voltage |
Vc |
≤24V DC |
| Heater Voltage |
VH |
2.5V±0.1V ACorDC |
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| Load Resistance |
RL |
Adjustable |
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| Gas Sensing Element Characteristics under Standard Test Conditions |
Heater Resistance |
RH |
20Ω±3Ω(Room Temperature) |
| Heater Power Consumption |
PH |
≤350mW |
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| Sensor Surface Resistance |
Rs |
5KΩ-50KΩ(in 0.4mg/LAlcohol ) |
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| Sensitivity |
S |
Rs(in air)/Rs(0.4mg/LAlcohol)≥5 |
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| Concentration Slope |
α |
≤0.6(R1.5/R0.4mg/LAlcohol) |
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| Standard Test Conditions |
Temperature, Humidity |
20℃±2℃；65%±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 than48hours |
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