Product introduction
1. Air pollution sensor MP135 product description
The MP135 planar semiconductor gas sensing element for air pollution detection (air pollution sensor, air quality sensor) adopts advanced planar production technology, forming a heater and metal oxide semiconductor gas sensing material on a miniature Al2O3 ceramic substrate, with electrode leads, packaged in a metal base and cap. When the detected 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.
2. Air pollution sensor MP135 features
High sensitivity to H2
Small component size
5V fixed voltage, low power consumption
Fast response and recovery characteristics
Simple drive circuit
3. Air pollution sensor MP135 main applications
Used in household environments for harmful gas detection automatic exhaust devices, air purifiers, etc.
4. Air pollution sensor MP135 technical specifications
| Product model |
MP135 |
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| Product type |
Planar semiconductor gas sensing element |
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| Standard packaging |
Metal |
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| Detected gases |
Hydrogen, alcohol, carbon monoxide |
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| Detection concentration |
10-1000ppmH2 10-1000ppm alcohol 10-500ppmCO |
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| Standard circuit conditions |
Circuit voltage |
Vc |
≤24V DC |
| Heater voltage |
VH |
5.0V±0.2V ACorDC |
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| Load resistance |
RL |
Adjustable |
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| Gas sensing element characteristics under standard test conditions |
Heater resistance |
RH |
110Ω±10Ω (room temperature) |
| Heater power consumption |
PH |
≤240mW |
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| Surface resistance of sensing body |
Rs |
10KΩ-100KΩ(in 50ppm H2 ) |
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| Sensitivity |
S |
Rs(in air)/Rs(50ppmH2)≥3 |
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| Concentration slope |
α |
≤0.6(R50ppm/R30ppm H2) |
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| Standard test conditions |
Temperature, humidity |
20℃±2℃；65%±5%RH |
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| Standard test circuit |
Vc:5.0V±0.1V； VH: 5.0V±0.1V |
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| Preheating time |
No less than 48 hours |
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