98
77 ApplicationsApplications
“Air Buoyancy Correction” Setting
ON (*Default setting)
(Formula for AP series with software version earlier than
1.01.28 or 1.01.I.01.)
OFF
(AU Series formula)
Solid
Solid specic gravity is found using the following formula.
(Formula which uses air density)
W
a
: Mass of sample measured in air
W
1
: Mass of sample measured in liquid
ρ
1
: Density of liquid used (normally water)
(The balance will calculate the density
automatically if water temperature is input.)
ρ
a
: Air density 0.0012 g/cm
3
Solid density is found using the following formula.
(Formula which does not use air density)
W
a
: Mass of sample measured in air
W
1
: Mass of sample measured in liquid
ρ
1
: Density of liquid used (normally water)
(Input into balance when measuring.)
Liquid
Liquid density is found using the following formula.
(Formula which uses air density)
M
a
: Mass of sinker measured in air
M
1
: Mass (apparent) of sinker measured in liquid
V : Volume density of sinker used
(Input into balance when measuring.)
ρ
a
: Air density 0.0012 g/cm
3
Liquid density is found using the following formula.
(Formula which does not use air density)
M
a
: Mass of sinker measured in air
M
1
: Mass (apparent) of sinker measured in liquid
V : Volume of sinker used
(Input into balance when measuring.)
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