Metrohm TitrIC 2 - Manual (Page 13)

Application Bulletin 286 e
Installation Instructions of TitrIC 2
Page 13/16
6.2.3 Special beaker definition
Under Configuration mark 855_1 , select Edit / Properties / Rack / Rack data / Special beaker , Special beaker 1 , click
on Edit and define the position to be used for rinsing as Rack position . The last position is normally used
as the rinsing position. A sample vessel containing DI water should always stand in this position.
Confirm by clicking on
twice.
6.2.4 Lift positions
Under Configuration / Tools / Manual operation click on 855 Sample Changer / Tower 1 in the left-hand column
and use the entries Move and Assign position (See 855 Instructions for Use, page 67) to define suitable
values (click on each time) for:
Shift position for changing the rack position (approx. 53 mm)
Work position for aspirating of the sample (approx. 173 mm)
Special position for dipping for the conductivity measurement (approx. 130 mm)
For the special position you must define the work position again, then at the right beside Work position
click on Tower and select Special position 1 .
6.2.5 Solutions
The solutions to be used must, as usual, be defined in tiamo. Connect the Dosino of the 20 mL Dosing
unit to MSB 1 of the 855, the Dosino of the 50 mL Dosing unit to MSB 2 and the Dosino of the 10 mL
Dosing unit to MSB 3. The user is automatically requested to save the solutions – click on
. In
order to ensure compatibility with the methods provided, they must be named as described below.
At the left click on Configuration , then at the top right under Titrants/Solutions double-click on the
appropriate (empty) entries and enter the following under Solution name and Concentration :
Configuration table for titrants/solutions
Now the tubing lengths and ports are defined for each Dosing unit under Edit/Properties…/ Dosing unit as
follows:
anion cation HCl
Port Length Port Length Port Length
Dosing Port
Prep/Empty
Special Port - Dosing Port 1 - Dosing Port 1 -
Dosing Port 1 Port 4 60 cm Port 1 60 cm Port 1 40 cm
Dosing Port 2 Port 3 0 cm Port 3 0 cm Port 3 0 cm
Fill Port Port 2 80 cm Port 2 80 cm Port 2 25 cm
Special Port Port 1 0 cm Port 4 40 cm Port 4 0 cm
Configuration table of the three dosing units