2 defining dosing units – Metrohm 711 Liquino User Manual
Page 28
3.2 Tutorial
711 Liquino, Instructions for use
22
3.2.2
Defining dosing units
In order for the complete tubing system of a Dosino to be fully filled with the
reagent solution without any air bubbles the 711 Liquino must know the di-
mensions of the connected tubing. For this reason a dosing unit can be de-
fined in the configuration menu and then selected for the method.
Except for the "Sampling dosing unit" in the SMPL mode the standard port
occupancy for all modes is as follows:
Port 1:
dosing unit output
Port 2 (bottle):
refilling opening
CONFIG
A
•
Press <CONFIG> and then 3x <>.
Di spl ay:
conf i gur at i on
>dosi ng uni t s
ENTER
YES
•
Access the submenu ‘dosing units’ with <ENTER>.
Di spl ay:
> dosi ng uni t s
dos. uni t : D1
DOS NR
SELECT
P
•
One of the ten configurable dosing units can be selected with the
<SELECT> key. Press <ENTER> to access the settings for the corre-
sponding dosing unit. The index for the dosing unit is located in the top
right-hand corner of the display.
Di spl ay:
>dosi ng uni t s 1
I D D1
•
Enter an identification text for the dosing unit or leave the preset entry
as it is. Text input is explained on page 63.
•
Accept the entry with <ENTER>.
Di spl ay:
>dosi ng uni t s 1
l engt h t ube1 400 mm
•
Now enter the length of tubing at Dosino port 1 (for tandem dosing
including the tubing length up to the T-piece) and accept the entry with
<ENTER>.
Di spl ay:
>dosi ng uni t s 1
di am. t ube1 2. 0 mm
•
The inner diameter of the tubing at Dosino port 1 can be entered here
and confirmed with <ENTER>.
Di spl ay:
>dosi ng uni t s 1
l engt h t ube2 250 mm
•
Now enter the length of the tubing at Dosino port 2 (bottle) and accept
the entry with <ENTER>.
Di spl ay:
>dosi ng uni t s 1
*) In a single method ‘standard’ can also be selected for the dosing unit used. For the modes XDOS, CONT
and GLP ‘standard’ means:
Port1 (dosing port):
L = 40cm, D = 2mm
Port2 (bottle):
L = 25cm, D = 2mm.
For PIP ‘standard’ means:
Port1 (pipetting tubing):
L = 150cm, D = 2mm
Port2 (bottle):
L = 25cm, D = 2mm.
For SMPL ‘standard’ means:
Port1 (sample tubing):
L = 40cm, D = 2mm
Port2 (measuring cell):
L = 16cm, D = 2mm
Port3 (rinsing agent):
L = 50cm, D = 2mm.