... . efficient and effective. TH-2000 Ambient Air Quality Automatic Monitoring System is consist of a central station and ... consists of two independent cabinets, which are fixed or drawer type. Atmosphere pollution monitors: monitoring SO2, NOx, PM10, PM2. ... ,Infrared Absorption CO analyzer,TH-2009 Seperated Atmospheric weather automatic monitor, Integrative Meteorological 6 Data Monitor, TH-2000PM ...