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Description
Features:
| CATEGORY | SPECIFICATIONS |
|---|---|
| Product Type | Ozone Gas Sensor |
| Model | MQ131 |
| Sensitive Material | SnO₂ (Tin Dioxide) |
| Working Principle | Conductivity of SnO₂ changes with ozone concentration |
| Detection Method | Gas concentration → resistance change → electrical signal output |
| Target Gas | Ozone (O₃), also sensitive to Cl₂, NO₂ |
| Detection Range | 10 ppb – 2 ppm (Ozone) |
| Sensor Type | Semiconductor gas sensor |
| Output Types | Analog output + TTL digital output |
| Digital Output Logic | Low-level signal when gas is detected |
| Analog Output Behavior | Voltage increases with gas concentration |
| Sensitivity Indicator | High sensitivity to ozone |
| Response Time | Fast response |
| Stability | Long-term stability and reliability |
| Lifespan | Long operational life |
| Preheating Time | > 48 hours |
| Supply Voltage (VC) | ≤ 24V DC |
| Heater Voltage (VH) | 5.0V ± 0.2V (AC or DC) |
| Load Resistance (RL) | Adjustable |
| Heater Resistance | 31 Ω ± 3 Ω (room temperature) |
| Power Consumption | ≤ 900 mW |
| Sensing Resistance | 50 kΩ – 500 kΩ (in 50 ppm O₃) |
| Operating Conditions | 20°C ± 2°C, 65% ± 5% RH |
| Mounting Feature | Mounting holes for easy installation |
| Probe Design | Plug-in probe for easy replacement/testing |
| Encapsulation | Stainless steel housing |
| Application Type | Environmental monitoring, home gas detection |
| Use Case | Ozone detection in air quality systems |
Package Includes:
1 x MQ131 Ozone Gas Detection Sensor Module
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