Product Introduction
1. VOC Sensor MP502 Product Description
The MP502 gas sensor is an air quality gas sensor for measuring VOC gases. It uses 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 housing. When the target gas is present in the ambient air, the sensor's conductivity changes; the higher the gas concentration, the higher the sensor's conductivity. A simple circuit can convert this change in conductivity into an output signal corresponding to the gas concentration.
2. VOC Sensor MP502Sensor Features
High sensitivity to organic gases such as toluene, benzene, formaldehyde;
Fast response and recovery;
Miniature size, low power consumption;
Simple detection circuit;
Good stability and long life.
3. VOC Sensor MP502Main Applications
Used for harmful gas detection in home environments and offices, automatic exhaust devices, air purifiers, etc.
4. VOC Sensor MP502Technical Specifications
| Product Model |
MP502 |
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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 |
Toluene, formaldehyde, benzene, alcohol, acetone, etc. |
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| Detection Concentration |
1-50ppm |
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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-Sensitive Element Characteristics under Standard Test Conditions |
Heater Resistance |
RH |
90Ω±5Ω(Room Temperature) |
| Heater Power Consumption |
PH |
≤280mW |
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| Sensitive Body Resistance |
Rs |
10KΩ-100KΩ(in 10ppm Toluene) |
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| Sensitivity |
S |
Rs(in air)/Rs(10ppmToluene)≥5 |
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| Concentration Slope |
α |
≤0.6(R20ppm/R5ppmToluene) |
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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 120 hours |
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