Instruction Manual

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 <OK>. 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 <OK>. 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.