The MQ-4 by Winsen is a Flammable Gas Sensor. Below is the official datasheet preview.
| Part number | MQ-4 |
|---|---|
| Manufacturer | Winsen |
| File Size | 463.87 KB |
| Description | Flammable Gas Sensor |
| Datasheet |
 MQ-4-Winsen.pdf
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of Sensor Characters CH4 Air Alcohol C3H8 Concentration(ppm) Fig3.Typical Sensitivity Curve The ordinate is resistance ratio of the sensor (Rs/R0), the abscissa is concentration of gases.Rs means resistance in target gas with different concentration, R0 means resistance of sensor in clean air.All tests are finished under standard test conditions.Fig4.Typical temperature/humidity characteristics The ordinate is resistance ratio of the sensor (Rs/Rso).Rs means resistance of sensor in 5000pp
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