Figure 8

(a) Time responses of the sensor to NH3 recorded with a 10-days interval. (b) Sensor’s responses to 12 ppm of ammonia during three consecutive tests at constant humidity and temperature.

(a) Time responses of the sensor to NH3 recorded with a 10-days interval. (b) Sensor’s responses to 12 ppm of ammonia during three consecutive tests at constant humidity and temperature.