Metrohm 797 VA Computrace Manuel d'utilisateur télécharger pdf (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 <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.

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Metrohm 797 VA Computrace Manuel d'utilisateur Page 229

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