The 1405-F TEOM monitor consists of the following equipment: a filter membrane dynamic measurement system (FDMS) and TEOM quality sensor located in a single chassis, as well as a ready to use network configuration (including a control system with a touch screen user interface). The 1405-F TEOM monitor adopts direct mass measurement method, which is not affected by measurement uncertainties caused by other alternative technologies, thus standing out from other particulate matter measurement methods. Provide true quality measurement with self reference and NIST traceability.