Products
Toxic Gas Sensor
for industry gas monitoring
Application:
Extensive suitable for industrial and environmental protection field sulfur dioxide detectionProduct characteristics:
high precision1. Description
MQ-E4-SO2 is the sensor of fixed potential electrolysis type. By redox reaction, SO2 and O₂release charge and form the current. The value of current is proportional to the concentration of SO2 and follow the Faraday’s Law. By testing the value of current, the concentration of SO2 is known.
2. Application
Widely used in industry or environmental protection field for detecting SO2.
3. Appearance and dimension
4. Technical specifications
| project | parameter |
| tracer gas | Sulfur dioxide (SO2) |
| range | 0~20ppm |
| Maximum measurement limit | 200ppm |
| sensitivity | （0.8±0.2）μA/ppm |
| resolution ratio | 0.1ppm |
| Response time (T90) | ≤30S |
| bias voltage | 0mV |
| Load Resistance (recommended) | 10Ω |
| repetitiveness | ＜2% |
| Stability (/ month) | ＜2% |
| Output linearity | linear |
| Zero-point drift (-20℃ ~40℃) | ≤0.2ppm |
| temperature range | 15℃~90℃ |
| Humidity range | 15%~90%RH |
| pressure limit | Standard atmospheric pressure is ± 10 |
| life length | 2 years (In Air) |
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