Error message "please select a new database file, 4 dosing device problems, Dosing device does not work – Metrohm 797 VA Computrace User Manual

Page 270

9 Troubleshooting

797 VA Computrace – Software

258

Error message "Please select a new database file"

If you work with the new program version «797 VA Computrace
Software 1.3.x» and try to export to a database created with an old
program version «797 VA Computrace Software 1.X», following er-
ror message appears.
"The selected database file was created with a previous version of
CT797. The data cannot be written to this database.
Please select a new database file".
Reason for this error is that the file structure of the Version w1.3.x
differs from the file structur of the previous versions 1.X.
Close the autodatabase, and confirm the error message with .
The window

SELECT DETERMINATION DATABASE FILE

opens.

Choose a database created with Version w1.3.x, or create a new
one by entering a new name and clicking .

9.4

Dosing Device problems

Dosing Device does not work

Check the connecting cable between Dosing Device and 797
VA Computrace stand resp. the 846 Dosing Interface.

2. Click

MAIN WINDOW / Settings / General settings

and check

the entries on the

Dosinos / Dosing Interface

tab of the

GENE-

RAL SETTINGS

window (see Installation of Dosing Devices, sec-

tion 1.3).

Click the button

4. Select

Automatic

for

Addition

in the

WORKING METHOD SPECI-

FICATIONS

window.

5. Activate

the

Dosing Device

in the

DOSINO

window for every

method used (see Dosing Devices, section 5.2).

6. Check the solution number

. on the

Substances

tab of the

EDIT WORKING METHOD PARAMETERS

window. The number

defined in the

No.

field of the

Substances

tab of the

EDIT WOR-

KING METHOD PARAMETERS

window should correspond with

the number of the Dosing Device used for the addition of this
substance.

Irreproducible standard additions with a Dosing Device

1. Click on

MAIN WINDOW / Utility / Dosino control

open the

DOSINO CONTROL

window (see Dosino control win-

dow, section 7.2).

Check if there are air bubbles left in the glass cylinder of the
dosing unit. If this is the case, press button

3. Close

the

DOSINO CONTROL

window.