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Description
Features:
| CATEGORY | SPECIFICATIONS |
|---|---|
| Product Type | Ozone Gas Sensor |
| Model | MQ131 |
| Sensitive Material | Tin Oxide (SnO₂) |
| Working Principle | Gas concentration changes conductivity of SnO₂, converted to electrical signal |
| Detection Method | Conductivity variation proportional to ozone concentration |
| Target Gas | Ozone (O₃), also sensitive to Cl₂ and NO₂ |
| Detection Range | 10 ppb – 2 ppm (Ozone) |
| Sensor Type | Semiconductor gas sensor |
| Output Types | Analog output + TTL digital output |
| Analog Output Behavior | Voltage increases with gas concentration |
| Digital Output Logic | Low-level signal when gas is detected |
| Sensitivity | High sensitivity to ozone |
| Selectivity | Good selectivity for ozone detection |
| Response Time | Fast response |
| Stability | Long-term stable performance |
| Lifespan | Long operational life |
| Preheating Time | > 48 hours |
| Operating Conditions | 20°C ±2°C, 65% ±5% RH |
| Supply Voltage (VC) | ≤ 24V DC |
| Heater Voltage (VH) | 5.0V ±0.2V (AC or DC) |
| Heater Resistance | 31 Ω ±3 Ω |
| Power Consumption | ≤ 900 mW |
| Sensing Resistance | 50 kΩ – 500 kΩ (at 50 ppm O₃) |
| Load Resistance | Adjustable |
| Mounting Feature | Mounting holes for easy installation |
| Probe Design | Plug-in probe for easy testing |
| Encapsulation | Stainless steel housing |
| Application Type | Environmental monitoring, air quality systems |
| Use Case | Ozone detection in residential and industrial environments |
Package Includes:
1 x MQ11 Ozone Gas Detection Sensor Module
![Discontinued] MQ-131 Gas Sensor Ozone Module – SainSmart.com](https://www.sainsmart.com/cdn/shop/products/4_e3e61211-7b20-436d-9d64-22f8f904e055.jpg?v=1509587872&width=1000)
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