Micromeritics DVVA II 4000, Operator'S Manual

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Appendix B DVVA II 4000
B-2 400-42803-01 (Rev B) - July 2017
Blank Correction
A blank analysis is performed to correct for the frictional force between the piston and the sample
chamber, and for the deflection of the linear transducer.
where
F = applied force
F
S
= force on sample
F
f
= frictional force
h
b
= bed height
h = measured height
h
d
= deflection
Void Volume
where
V
A
= apparent volume
F
s
= force of sample
h
b
= bed height
m = mass

S
= skeletal density
d = diameter of sample chamber
F
S
F F
f
h
b
 
– =
h
b
h h
d
F
 
– =
VV F
S
 
V
A
F
S
 
V
T
–
 
100

=
V
A
F
S
 
h
b
A
=
A

d
2
4
---------
=
V
T
m

S
-----
=