Figaro - Model TGS826 - Ammonia Sensor - Brochure

The sensing element of TGS826 is a metal oxide semiconductor which has low conductivity in clean air.  In the presence of a detectable gas, the sensor`s conductivity increases depending on the gas concentration in the air.  A simple electrical circuit can convert the change in conductivity to an output signal which corresponds to the gas concentration.TheTGS826has high sensitivity to ammonia gas.  The sensor can detect concen-trations as low as 30ppm in the air and is ideally suited to critical safety-related applications such as the detection of ammonia leaks in refrigeration systems and ammonia detection in the agricultural field.