RADWAG BALANCES 3Y SERIES - Manual (Page 42)

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C
or
rec
tion
val
ue
[m
g]
D
ens
ity
of
w
ei
ghed
loa
d
Sample mass [g]
Error value in relation to density of weighed sample
2. Testing the changes of sample mass within a few hours’ time, if: sample
mass is relatively constant (minor changes). In such case it is assumed,
that considerable effect on the measurement result rests on air density
changes, which is affected by changes of pressure, temperature and
humidity.
In order to carry out a reliable measurement, apart from being familiar with
relations applying to ambient conditions, an operator should know the measuring
methods, features of tested sample, air density in the laboratory room and
density of weighed sample.
FUNCTIONING
The application provides two ways to use the air buoyancy compensation
procedure.
1. Inserting the specified value of air density and specified value of weighed
sample density to balance’s memory.
On inserting these values the application automatically calculates the
correction factor for weighed mass and indicates corrected value of
weighed mass on balance’s display.