Successful development of a 4.3-inch ammonia nitrogen detection instrument based on STM32

At the beginning of this year, Shanghai Wansi Electronics successfully developed an ammonia nitrogen instrument independently. The instrument integrates a 4.3-inch touch screen, achieving control of 6 motors, 4 solenoid valves, 4 switch inputs, 4 switch outputs, 2 PT100 temperature detection circuits, 1 mixer circuit, and 2 4-20mA circuits.

On the software side, complex operations such as automatic cleaning, calibration, manual switching, manual control of pumps and valves, storage of measurement records, and editing of detection formulas can be achieved.

At present, the system is running stably and is in mass production