Instruction Manual
8.8 Calibration curve technique
797 VA Computrace – Software
251
tion to the measuring solution using 700/800 Dosinos or 685/800
Dosimats. Proceed as follows:
1. Install Dosing Devices to the 797 VA Computrace stand (see
How to
Install Dosing Devices for automatic addition, section
8.1).
2. Click on or MAIN WINDOW / Mode / Determination.
3. Click on or MAIN WINDOW / Window / Working method
specification
to open the WORKING METHOD SPECIFICATIONS
window.
4. Load the desired method into the
WORKING METHOD SPECIFI-
CATIONS
window (see How to Load a method, section 8.4).
5. Select
Record calibration curve in the Calibration field of the
WORKING METHOD SPECIFICATIONS window (Is not selectable
with the CVS and CPVS mode).
6. Select Automatic in the Addition field of the WORKING
METHOD SPECIFICATIONS
window.
7. Click to open the EDIT WORKING METHOD PA-
RAMETERS
window.
8. Select the Determination tab (see section 5.2) and enter the Cell
volume
and the number of additions in the No. of additions
field.
9. Select the Substances tab (see section 5.2) and make sure that
for each substance entered in the table the number of the sin-
gle or mixed standard solution, its concentration and its volume
is defined. The No. of the standard solution must be identical to
the number of the Dosing Devices used for automatic addition
of this solution.
10. If the addition of the standard solution should be done with
variable addition volumes, click the
button in the Volume
column to open the EDIT VARIED ADDITION window, enter the
variable addition volumes in the
Addition fields, and close this
window by clicking <OK>.
11. Close the
EDIT WORKING METHOD PARAMETERS window by
clicking
<OK>.
12. Place the electrolyte solution (e.g. buffer) in the measuring ves-
sel at the 797 VA Computrace stand.
13. Click on or MAIN WINDOW / Window / Monitor to open the
MONITOR window.
14. Start the measurement by clicking the icon in the MAIN
WINDOW
or the button in the MONITORING window.
15. Enter the Calibration curve id (used as part of the determination
file name) in the START CALIBRATION window and click <OK>.