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Ammonia Gas Sensor - MQ-137

SKU 3843
£39.99 inc VAT
£33.33 ex VAT
2 in stock.

The MQ-137 is an Ammonia (NH₃) gas sensor from Winsen. The sensing element is SnO2, which has lower conductivity in clean air. When NH₃ (Ammonia) gas exists, the sensor’s conductivity gets higher along with the gas concentration rising. A simple circuit makes measuring this change in conductivity and turning it into data fairly straight-forward, but does require some calibration.

Note: PCB is not included.