PGC-2020C VOCs Online Monitoring System — System Introduction: PGC-2020C Environmental Air Non-Methane Total Hydrocarbon (NMHC) Online Monitoring System adopts negative pressure sampling via a suction pump. Environmental samples are drawn through an atmospheric sampling main pipe and then enter the NMHC analyzer for detection. The system features automatic calibration, data logging, and remote communication capabilities. Key Features: - Continuous real-time monitoring of non-methane total hydrocarbons - Negative pressure sampling ensures accurate sample representation - Automatic zero and span calibration - RS485/4-20mA output for integration with DCS systems - Designed for compliance with national environmental emission standards - Application: environmental air quality monitoring, industrial exhaust monitoring, petrochemical facilities