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Electrochemical gas sensors
4S-NH3 Electrochemical Ammonia Sensor
The 4S-NH3 sensor is a potentiostatic electrolytic-type ammonia sensor. Ammonia (NH3) and oxygen (O2) undergo corresponding redox reactions at the working and counter electrodes, releasing charge to generate an electric current. The magnitude of this current is directly proportional to the ammonia concentration; therefore, the concentration of ammonia can be determined by measuring the current.







