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10.4. Autozero function
In order to ensure balance’s precise mass indication, “AUTOZERO” software parameter
has been introduced. The application of this function is automatic control and correction of
zero indication.
If AUTOZERO function is enabled, then each weighing process starts from precise zero
point. There are, however, some cases when this function can be a disturbing factor of
measuring process; for instance very slow placing of a load on the weighing pan (e.g. load
pouring) – in such case system of zero indication correction can also correct actual
indication of loaded mass. AUTOZERO function is enabled or disabled in parameter P4 03
as specified in point 5.1.1 of this user manual.
10.5. Last digit
In order to ensure adequate operating comfort with a balance, the user can determine
presence of the last digit on the display and criteria of its displaying.
Available settings are:
-
0
never
-
1 always
-
2
when stable
10.6. Negative
The function aids previewing mass value and other indications on the display. Depending
on user needs it is possible to enable or disable the function.
10.7. Air buoyancy correction
The air buoyancy correction enables correcting errors occurring while mass measuring
processes, i.e.:
1.
Determining mass of a sample which density considerably differs from the density of
a mass standard used for adjusting the balance. As standard, the balance is adjusted
with a mass standard made of steel that density equals ~8.0g/cm
3
or made of brass
with density ~8.7g/cm
3
. If the weighed object is made of other materials, then below
specified relationship applies:
Below scheme demonstrates the size of mass corrections in relation to the density of
weighed material, and assuming that air density is constant and equals 1.2 kg/m
3
.
