Metrohm 797 VA Computrace - Manual (Page 16)

1 Introduction
797 VA Computrace – Software
4
2. If required, connect the 846 Dosing Interface to one of the USB
ports of the 797 VA Computrace or the PC. Connect the 846
Dosing Interface to the mains supply.
3. Connect the Dosing Device via MSB connection to the 797 VA
Computrace stand or the 846 Dosing Interface.
4. Switch on the 797 VA Computrace stand.
5. Open 797 VA Computrace Software 1.3.x and log in.
6.
Open the GENERAL SETTINGS window in MAIN WINDOW / Set-
tings , activate the Dosinos (or Dosing Interface ) tab and click
the button.
7. Choose for menu item Prep/Empty via port the port which is
used for the functions "Prep" and "Empty". Recommended is
Port 3 (doesn't lead to the measuring cell but to a waste con-
tainer). Using Port 3 you
can reduce contamination of the
measuring cell and the electrode. Moreover the dosing unit can
be rinsed and emptied faster.
Note: If you choose Port 3 for menu item Prep/Empty via
port , you must install an FEP Tubing Connection
6.1805.530 from Port 3 to a waste container.
8. Choose the number for No. of Prep cycles . It defines the num-
ber of "Prep-Cycles" conducted before starting the measure-
ment or before starting the sample table.
Installation of 863 Compact VA Autosampler
For automated voltammetric trace analysis it is possible to connect
an
863 Compact VA Autosampler , a 843 Pump Station and
up to three Dosing Devices (four more with a 846 Dosing Inter-
face) to the 797 VA Computrace stand. Proceed as follows:
1. Switch on the PC
2. Connect the 797 VA Computrace stand and the 843
Pump Station (Remote 1) using the cable 6.2141.280 (see
797 Hardware Manual).
3. Connect 863 Compact VA Autosampler and the 843
Pump Station (Remote 2) using cable 6.2141.230 .
4. Install the accessories on the 863 Compact VA Autosam-
pler (see 797 Hardware Manual).
5. Connect the Dosing Devices to the 797 VA Computrace or the
846 Dosing Interface (via MSB).
6. Connect the 797 VA Computrace stand to the PC (via
USB).
7. Switch on the 797 VA Computrace stand , the 863 Com-
pact VA Autosampler and the 843 Pump Station .
8. Set Method 2 at the 863 Compact VA Autosampler (see
863 Instructions for Use).