Product Overview: This sampler collects particles of various sizes, such as PM?? and PM?.?, from the air. The sampling system consists of a portable low-flow particulate sampler and a portable automatic filter membrane switching device, connected by an intake tube and a data cable. This system can be used separately for single-membrane sampling or combined for automatic multi-membrane switching continuous sampling, significantly enhancing the flexibility of sampling operations. It meets the needs for analyzing the mass concentration of ambient air, inorganic cations and anions, inorganic elements, organic carbon, organic compounds, and particulate dispersion. Technical Features: No manual supervision needed for filter membrane replacement. The filter membrane switching device's housing is ventilated to prevent moisture condensation and membrane freezing. Compatible with various sampling heads, such as TSP, PM??, and PM?.?. High-precision temperature and pressure sensors to monitor temperature and load pressure at the filter membrane. Measurement data can be transmitted remotely to a server or control terminal. SMS alarm notifications, with the system storing and displaying all alarm instances, including specific alarm details and timestamps.