Thermo Scientific Model 5012 MAAP Multi Angle Absorption Photometer0 pages

AMBIENT & AREA MONITOR
Prod u c t Sp e ci f i cati ons

Thermo Scientific Model 5012 MAAP
Multi Angle Absorption Photometer
Precision measurement of black carbon in the atmosphere
t

The Thermo ScientificTM Model 5012
MAAP Multi-Angle Absorption Photometer
precisely measures the loading of
black carbon in the atmosphere using
a radiative transfer scheme to particle
loaded glass fiber filters.
•t Multiple detectors simultaneously
measure transmitted and
scattered light
•t Control and data exchange over two
serial interfaces
•t User selectable sample
averaging times
•t Automatic temperature and
pressure correction
•t Internal quality assurance and data
storage log book

Black Carbon (BC), a product of incomplete
combustion, comes from industrial pollution,
traffic, fires, the burning of coal and
biomass fuels.
Unlike carbon dioxide emissions, which add
to global warming by trapping heat in the
atmosphere, soot emissions may contribute
to global warming and climate change by
absorbing sunlight, heating the air and
making the atmosphere more unstable
The measurement of BC, by optical means,
has typically meant the measure of the
transmission of light through a filter as the
BC was collected. This measurement is
affected by reflection and the scattering of
light in multiple directions due to particle size
and shape.

The BC content of the aerosols is
continuously determined by simultaneously
measuring the optical absorption and
scattering of light by the particles collected
on the filter tape. The combination of these
two techniques as utilized by the Model 5012
MAAP provides a much truer measurement
of the black carbon content.