Recalculate an existing determination – Metrohm 797 VA Computrace User Manual
Page 229
8.5 Determinations with voltammetric trace analysis
797 VA Computrace – Software
217
7 MOVE
1
:
+28
> Move needle to rinsing posi-
tion
8 LIFT: 1
work mm
> Place needle at working posi-
tion
9 PERISTALT: 5 s
10
> Suck rinsing solution in the
needle
10 SCN:Rm:
*****1**
> Scan line for incoming signal
from CT797
11 PERISTALT:
300 s
10
> Rinse
needle
12 CTL:Rm:
************1
> Set line: needle cleaning
ready
13 CTL:Rm:
************0
Before starting, define the position of the first sample vessel for the
838 parameter "
SAMPLE
" with the 838 keypad.
Recalculate an existing determination
1. Click on
or
MAIN WINDOW
/ Mode / Determination
.
2. Click on
or
MAIN WINDOW
/ File / Load determination
.
3. Select the desired determination file
*.dth
in the
OPEN
window
and click
. The determination is loaded into the
DETER-
MINATION CURVES
window.
4. Click on
or
MAIN WINDOW
/ Window / Results
to open the
RESULTS
window.
5. Click on
or
MAIN WINDOW
/ Window / Determination
curves
to open the
DETERMINATION CURVES
window.
6. Arrange the subwindows in the
DETERMINATION CURVES
win-
dow so that the list of curves, the determination curves and the
calibration curves are visible.
7. If desired, select one or several (Ctrl + Click) objects in the list of
curves and click on
or
Show selected...
of the context sen-
sitive menu to show only the selected determination curve(s).
8. If desired, zoom the interesting area in the determination
curves subwindow.
9. Click on
or
DETERMINATION CURVES
/ Edit / Determina-
tion method parameters
to open the
EDIT DETERMINATION
METHOD PARAMETERS
window.
10. Modify the parameters (e.g.
Sample amount
,
Cell volume
,
Peak
position
, baseline parameters, standard solution concentra-
tions, calculation parameters) to the desired values on the tabs
Specifications
,
Determination
,
Substances
and
Calculations
(see
section 5.2).
11. Close the
EDIT WORKING METHOD PARAMETERS
window by
clicking
. The determination is recalculated and the new
results are displayed in the
RESULTS
window.
12. If desired, repeat steps 10 and 11 once or several times.