The TEOM Model 1405-DF Dichotomous Ambient Particulate Monitor differentiates itself from other PM measurement methods by utilising a direct mass measurement tht is not subject to measurement uncertainties found in surrogate techniques such as beta attenuation, light scattering and pressure drop.
The TEOM Model 1405-DF Dichotomous Ambient Particulate Monitor simultaneously measures PM-10, PM-2.5 and PM-Coarse (PM10-2.5) mass concentration as it exists in the ambient air. This system is composed of two Filter Dynamics Measurement Systems (FDMS) and two TEOMs housed in one small single cabinet, network ready configuration that includes the control system with touch screen user interface.
The system is designed to provide representative short term reading of the ambient PM concentration, even in the presence of volitile materials. Conventional PM monitoring approaches do not account for the rapid loss that occurs on a collection filter while sampling ambient PM. The TEOM 1405-DF Dichotomous Ambient Particulate Monitor unit automatically generates mass concentration measurements that account for both non-volatile and volatile PM-10, PM-2.5 and PM-Coarse components.
The system's default data output consists of a running 1 hour and 24 hour average mass concentration updated every 6 minutes. The monitor also computes FDMS base and reference mass concentrations over the same averaging times.
The TEOM 1405-DF Dichotomous Ambient Particulate Monitor provides a self referencing, NIST-traceable true mass measurement using Thermo Scientifics proven high reliability TEOM technology.
