C-1
A P P E N D I X C
P a r t i c l e S i z e S t a t i s t i c s
This appendix gives an explanation of the statistics calculations used by
the Engine Exhaust Particle Sizer
TM
(EEPS
TM
) software. The statistics are
calculated for the interval defined by the upper and lower bounds selected
from the graphs, which are not necessarily the entire size range of the
instruments.
Statistic/Weight
Number
Surface Area
Volume
Mass
Concentration
tQ
c
n
n
D
s
p
2
6
3
n
D
v
p
v
m
Total Concentration
u
l
n
N
u
l
s
S
u
l
v
V
u
l
m
M
Mode
)
(
max
n
D
p
)
(
max
s
D
p
)
(
max
v
D
p
)
(
max
m
D
p
Median (
x
~
)
)
2
/
(
N
D
p
)
2
/
(
S
D
p
)
2
/
(
V
D
p
)
2
/
(
M
D
p
Mean (
x
)
N
nD
u
l
p
S
sD
u
l
p
V
vD
u
l
p
M
mD
u
l
p
Geometric Mean
(
g
x
)
N
D
n
u
l
p
ln
exp
substitute
s
,
v
,
m
and
S
,
V
,
M
in
place of
n
and
N
for other
weightings
Geometric Standard
Deviation (
g
)
2
1
2
ln
ln
exp
N
x
D
n
u
l
g
p
substitute
s
,
v
,
m
and
S
,
V
,
M
in
place of
n
and
N
for other
weightings
Содержание SIZER EEPS 3090
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Страница 149: ...Serial Commands D 3 3 Enter the communications COM port 4 Enter the port settings described below and click OK...
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