Thermo Scientific TEOM 1405-DF Ambient Particulate Monitor0 pages

AMBIENT & AREA MONITOR

Continuous dichotomous ambient air monitor

The Thermo ScientificTM TEOM 1405DF Ambient Particulate Monitor
simultaneously measures PM-10,
PM-2.5 and PM-Coarse mass
concentration as it exists in the
ambient air.
•t U.S. EPA PM-2.5 Equivalent Monitor
(EQPM-0609-182)
•t Accounts for volatile and non-volatile
PM fractions
•t Combines control unit, mass sensor
and FDMS into a single integrated
unit
•t Embedded FTP server, Ethernet, USB,
RS-232 and RS485 communications
•t Activol flow control

*Candidate for PM-10 & PM-Coarse Equivalent Monitor

The 1405-DF monitor is composed of two
Filter Dynamics Measurement Systems
(FDMS) and two TEOM mass sensors
housed in a single cabinet, network-ready
configuration that includes the control
system with touch screen user interface.
The TEOM 1405-DF system is designed
to provide representative short and
long term reading of the ambient PM
concentration, even in the presence
of volatile materials. Conventional PM
monitoring approaches do not account for
the rapid loss that can occur with collection
on a filter while sampling ambient PM.
The 1405-DF monitor overcomes this
challenge by automatically generating
mass concentration measurements (µg/
m3) 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 and on the hour
respectively. The monitor computes a
1-hour FDMS base and reference mass
concentrations updated every 6 minutes.

Users can select additional averaging times
from 30 minutes to 23 hours.
The 1405-DF monitor provides a selfreferencing, NIST-traceable true mass
measurement using our own proven
high reliability TEOM technology. The
system differentiates itself from other
PM measurement methods by utilizing
a direct mass measurement that is not
subject to measurement uncertainties
found in surrogate techniques such as beta
attenuation, light scattering and pressure
drop.

Prod u c t Sp e ci f i cati ons

Thermo Scientific TEOM 1405-DF
Ambient Particulate Monitor