Ammonian (NH3) Gas Sensor with Module, 0-100ppm~1000ppm

Ammonia sensors operate as potentiostatic electrochemical sensors. Ammonia and oxygen undergo corresponding redox reactions at the working electrode and counter electrode respectively, releasing charges that generate an electric current. The magnitude of this current is directly proportional to the ammonia concentration. By measuring the current intensity, the level of ammonia concentration can be determined.

Ammonia gas sensors are widely used in industrial and civil safety monitoring. For instance, they detect ammonia leaks and monitor air quality in fertilizer plants, cold storage refrigeration systems, and livestock farms. In laboratories, they support environmental monitoring for research purposes. Portable ammonia detectors are common for worker personal protection. Through real-time alarms and interlocking controls, sensors effectively prevent health hazards and explosion risks from ammonia leaks.

NH3 gas sensors require regular maintenance and calibration to ensure detection accuracy. Calibration is generally recommended every 6 to 12 months, using standard gases to compare and adjust the sensor. If the sensor is exposed to high-concentration ammonia environments for extended periods, the calibration cycle should be shortened. During daily use, avoid strong corrosive gases, excessive humidity, and extreme temperatures to prolong lifespan and ensure stability.