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AIR BUOYANCY COMPENSATION START-UP
Procedure:
•
Enter home screen and press grey workspace.
•
Select <Settings> parameter.
•
Select < Air buoyancy compensation> parameter.
Parameter values:
- Air buoyancy compensation – YES/NO.
- Sample density (enter value of weighed sample density). If you use products from
databases, then on product selection its density value is automatically uploaded.
- Air density – parameter designed to enable you to select the method of entering the
air density value.
Parameter values:
VALUE – select to open a window where you enter specified air density value (e.g.:
determined by means of other methods). The entered value is used in the course of
compensation. It is assigned automatically upon completed air density determination (to
complete air density determination press < > button).
ONLINE – select to make the balance acquire air density value from a connected THB
sensor at a real time, if such is connected to the balance, or from internal sensor installed in
the balance.
If your balance features both types of sensors (THB and internal), then data from the THB
supersedes the other, in such case go to
Setup/Ambient conditions/Ambient conditions
module and set SAVE or SAVE & ALERTS parameter.
If your balance features only one set of sensors recording temperature, humidity and
pressure, then correct ONLINE operation requires setting the following parameters:
- internal sensors exclusively – go to
Setup/Ambient Conditions/Ambient Conditions
Module and set NONE value,
- external THB sensor exclusively – go to Setup/Ambient Conditions/Ambient Conditions
Module and set SAVE or SAVE & ALERTS value.
For correct balance cooperation with the THB sensor it is necessary to set port’s
transmission parameters, they must be compatible with those of the THB sensor. The THB
sensor transmission parameters are detailed on its data plate.
On returning to the weighing mode, the display indicates an additional symbol
< ! >,
as
indicated on the figure below. From now on the value of indicated mass is corrected
including the air buoyancy compensation factor and sample density.
The measurement result can only be compensated by a correct value if the operator enters
the actual value of the air density and correct value of weighed sample density to balance’s
memory.
CAUTION:
If the <AIR BUOYANCY COMPENSATION> parameter is set to <ONLINE> parameter, then
pictogram <!> is not displayed. This means that parameter Setup/Ambient
Conditions/Ambient Conditions Module is set to SAVE or SAVE & ALERTS value, and
that there is no physical connection between a balance and a THB module, or that balance-
module communication parameters are incorrect. In such case plug the module to balance’s
ports COM 1 or COM 2 and set appropriate communication parameters, for the parameters
refer to a data plate.