Portable gas analyzer architecture integrating three electrochemical sensors (SO2, NO2, NH3) with dedicated signal conditioning modules feeding a central ADC converter. Each gas sensor connects through its own conditioning circuit to the ADC, which digitizes analog signals for the main microcontroller that also processes temperature and humidity compensation data. The rechargeable battery powers all subsystems through a voltage regulator, with external charging port enabling field deployment for environmental monitoring and industrial safety applications. Fork this diagram on Diagrams.so to customize sensor types, add wireless connectivity modules, or adapt the power management topology for your portable instrumentation project.