Product Introduction
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Ozone Sensor (O3 Sensor) (Low Concentration) MQ131 Product Description
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The gas sensing material used in the MQ131 gas sensor is tin dioxide (SnO2) with low conductivity in clean air. When ozone gas is present in the environment, the sensor's conductivity increases with the concentration of ozone gas in the air. A simple circuit can convert the change in conductivity into an output signal corresponding to the gas concentration.
The MQ131 gas sensor has high sensitivity to ozone, and also has certain sensitivity to strong oxidizing gases such as chlorine and nitrogen dioxide. It reacts in the opposite direction to organic interfering gases.
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Ozone Sensor (O3 Sensor) (Low Concentration) MQ131Sensor Features
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Good sensitivity to ozone gas over a wide concentration range
High sensitivity to ozone
Long life, low cost
Simple drive circuit required
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Ozone Sensor (O3 Sensor) (Low Concentration) MQ131Main Applications
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Household ozone concentration over-limit alarms
Industrial ozone concentration over-limit alarms
Portable ozone concentration detectors
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Ozone Sensor (O3 Sensor) (Low Concentration) MQ131Technical Specifications
| Model |
MQ131 |
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| Product Type |
Semiconductor gas sensing element |
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| Standard Package |
Bakelite (black bakelite) |
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| Detection Gas |
Ozone |
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| Detection Concentration |
10-1000 ppb ozone |
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| Standard Circuit Conditions |
Loop 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 |
31Ω ± 3Ω (room temperature) |
| Heater Power Consumption |
PH |
≤900mW |
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| Surface Resistance of Sensitive Body |
Rs |
50KΩ-500KΩ(in 100ppb O3) |
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| Sensitivity |
S |
Rs(in air)/Rs(in 50ppb O3)≥3 |
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| Concentration Slope |
α | ≤0.6(R500ppb/R100ppb O3) |
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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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| Preheat Time |
No less than 48 hours |
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