Microcontroller based Ammonia Leak Detection using NH4-NH3 Electrochemical Sensor

The paper consists of Ammonia leak detection algorithm which is an application. It based on PIC microcontroller using electrochemical sensor. Running a large scale industry, safety of worker and equipment is on first priority. When an industry specially runs in risky chemicals such as production of ammonia or use of ammonia as secondary chemical, it is a need to set up a safety system inside the industry. So to overcome this problem, here is a simple and low cost solution is provided. NH4-NH3 is a one of the simple and useful gas sensor widely used in chemical industries. By adhering to industry standards for size and connection orientation, the NE4-NH3 can be retrofitted easily to existing product designs. By using PIC microcontroller the leakage of gas is analyzed and processed for implementing an alarm system. Main purpose of this system is to provide safety of an industrial environment. The leakage detection and ECS algorithms proposed here are applied to the methodology, and the collected concentration data is analyzed. A detection rate of 99.8% is achieved, with 3 alarms recorded over 7 days, and an average detection delay of 800 msec.