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Ammonia sensor TGS2444

Description:
TGS 2444 displays good selectivity to ammonia, making it ideal for critical safetyrelated applications such as the detection of ammonia leaks in refrigeration systems and ammonia detection in the agricultural field. In the presence of ammonia, the sensor's conductivity increases depending on the gas concentration in the air. A simple pulsed electrical circuit operating on a one second circuit voltage cycle can convert the change in conductivity to an output signal which corresponds to gas concentration.

Specifications:
1) Target gases : Ammonia
2) range：10 ~ 100 ppm
3) sensitivity (change ratio of Rs) : 0.0.63 ~ 0.63
4) Circuit Voltage：VC=0V for 245ms, VC=5.0V±0.2V DC for 5ms
5) Heater Voltage：VHH=4.8V±0.2V DC, 14ms ;’ VHL=0.0, for 236ms

Features:
Low power consumption
High sensitivity/selectivity to ammonia (NH3)
Miniature size

Application:
Ammonia leak detection in refrigerators
Ventilation control for agricultural and poultry industries