Metrohm viva 1.0 (process analysis) - Manual (Page 589)

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5 Method
viva 1.0 (for Process analysis)
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Input range 1 - 12
Default value 1
Rotating direction
Selection of the direction in which the valve moves to the target port.
Selection ascending | descending | automatic | not over
Default value automatic
ascending
The valve moves towards the target port in ascending direction.
descending
The valve moves towards the target port in descending direction.
automatic
The valve determines the shortest path to the target port on its own.
not over
The valve moves towards the target port in such a way that the port
specified in the parameter Not over will not be traversed.
Not over
Selection of the port that is not to be traversed when the port is changed.
This parameter can be edited only if Rotating direction = not over.
Input range 1 - 12
Default value 1
5.6 Evaluation subwindow
5.6.1 Evaluation - General
Evaluation subwindow
Definition is made in the Evaluation subwindow as to how the concen-
trations, peak potentials, additional parameters and results of individual
substances are to be calculated from the measured raw data. The evalua-
tion is part of the method. Each VA measuring command with data
acquisition possesses an evaluation of its own. The evaluation can be sub-
divided into Data processing and Calibration.
￭ Data processing
Data processing calculates the evaluation quantities (peak potential,
height, area, etc.) for the peaks found from the raw data of the mea-
sured quantities and the evaluation parameters. The peaks are assigned
to certain substances with the help of the substances table.
￭ Calibration
The calibration determines how the concentrations of the substances
are calculated from their evaluation quantities.