Product Introduction
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Air Quality Sensor MP503 Product Description
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The MP503 gas sensor is an air quality gas sensor. It adopts a multi-layer thick film manufacturing process, with a heater and a metal oxide semiconductor gas-sensitive layer formed on both sides of a miniature Al2O3 ceramic substrate, connected by electrode leads, and packaged in a TO-5 metal shell. When the detected gas is present in the ambient air, the conductivity of the sensor changes. The higher the concentration of the gas, 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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Air Quality Sensor MP503Sensor Features
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High sensitivity to alcohol and smoke;
Fast response and recovery;
Miniature, low power consumption;
Simple detection circuit;
Good stability and long lifespan
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Air Quality Sensor MP503Main applications
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Used for detection of harmful gases in home environments and offices, automatic exhaust devices, air purifiers, etc.
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Air Quality Sensor MP503Technical Specifications
| Product Model |
MP503 |
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| Product Type |
Planar semiconductor gas-sensitive element |
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| Standard Package |
TO-5 |
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| Detection gas |
Alcohol, smoke |
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| Detection Concentration |
10-1000ppm(Alcohol) |
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| Standard Circuit Conditions |
Loop Voltage |
Vc |
≤24V DC |
| Heating Voltage |
VH |
5.0V±0.2V ACorDC |
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| Load Resistance |
RL |
Adjustable |
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| Gas-sensitive element characteristics under standard test conditions |
Heating Resistance |
RH |
85Ω±10Ω(room temperature) |
| Heating Power Consumption |
PH |
≤300mW |
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| Sensitive body Electricity Resistance |
Rs |
1KΩ-30KΩ(in 50ppm Alcohol) |
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| Sensitivity |
S |
Rs(in air)/Rs(50ppmAlcohol)≥5 |
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| Concentration Slope |
α |
≤0.6(R50ppm/R30ppmAlcohol) |
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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 |
Not less than48Hours |
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