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Gas sensor with high sensitivity to R-134a, the most promising alternative to R-12, commonly used in air conditioning systems and refrigerators.
The quick response speedand the low-cost make the sensor ideal for portable refrigerant leak detector.
In the presence of the gas to detect, sensor conductivity increases according to 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.
Due to the miniaturized sensing chip, the heater requires a current of only 120mW.