Environnement MP101M, Technical Manual

Page: 47 / 196

Duplication prohibited
MP101M
Environnement
S.A
2–5
SEPTEMBER 2013

m Density of particles deposited.
m
2
Density of air (mg/cm
2
) at temperature of T
2
In the two relations a) and b), this gives:
N
N
= e
1
2
k ( m + m2 - m1)

and:

m + m - m =
1
k
Ln
2 1
N
N
1
2






which gives the final relation:

m =
1
k
Ln + m - m
1 2
N
N
1
2






where
k
1
depends on the nature of the radiation emitted by the source, as well as the absorption
properties of the ribbon filter.
NOTE : Refer also to sections 2.2 and 2.4 about the calculation of volumes and concentrations.