Metrohm 840 PC Control 5.0 / Touch Control - Manual (Page 104)

3.13 Common variables
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PC Control / Touch Control
3.13 Common variables
Up to 25 device-specific, method-independent variables can be
stored in the system. These variables can be calculated as CV01 to
CV25. Common variables are always used when a result from one
determination carried out with Method A is to be used in a
determination carried out with Method B. Typical uses are in the
determination of a Blank value or the content of a standard solution to
be taken into consideration when calculating the content in a sample.
Common variables can also be automatically requested during the
course of a determination (see Section 4.13.3). This allows the entry of
additional data for the sample which can be used in calculations, e. g.
the density, etc.
Open the dialog System/Common variables.
The list of common variables contains the name and values for all 25
common variables. Variables to which no value has yet been assigned
are indicated by ".....". The selected common variable is deleted with
[Delete]. [Edit] opens the dialog for entering the common variable
and monitoring its validity.
3.13.1 Editing common variables
There are three basic ways of editing a common variable: the common
variable is edited either under Common variables/Edit or entered
manually in a request in the determination sequence or the variable is
automatically assigned to a result in the determination sequence in a
result calculation.
Editing common variables manually:
Select the common variable to be defined or edited and press
[Edit].