9 xdos – the electronic dropping funnel – Metrohm 711 Liquino User Manual
Page 49
3 Introduction
711 Liquino, Instructions for use
43
3.2.9
XDOS – the electronic dropping funnel
120mL of solution are to be added in 5 hours. This can be carried out easily
and reliably with a tandem addition using 2 Dosinos. In this way interruption-
free addition is guaranteed.
Preconditions / Preparation
The accessories for tandem addition (see ”ordering information” in the ”711
Liquino” leaflet) are required for the tubing. However, it is also possible to
lead a separate tubing from each Dosino to the test apparatus.
A dosing unit which corresponds to the tubing used for the Dosino must be
defined. This process is described on page 22.
Method editing
*
MODE
-
X
DOS NR
SELECT
P
•
The XDOS mode must first be activated. This sets all method parame-
ters to standard values. Press the <MODE> key and then <SELECT>
until ‘XDOS’ appears in the display:
Di spl ay:
mode sel ect : XDOS
ENTER
YES
•
Press <ENTER>. The instrument is now in the XDOS mode.
Di spl ay:
XDOS * * * * * * * *
r eady 0. 000 mL
PARAM
B
•
The <PARAM> key is used to access the parameter menu, where all
the possible settings for an XDOS method can be found.
Di spl ay:
par amet er s
>XDOS par amet er s
•
The submenu ‘XDOS parameters’ contains the main settings for an
XDOS method. Press <ENTER> to open the submenu.
Di spl ay:
>XDOS par amet er s
XDOS t ype: vol ume&r at e
•
The colon indicates that the <SELECT> key can be used to select a
value from a list. Press <SELECT> until ‘volume&time’ appears. Ac-
cept the entry with <ENTER>.
Di spl ay:
>XDOS par amet er s
vol ume 1. 000 mL
•
Enter the volume which is to be added (1000 mL in this example) and
press <ENTER>.
Di spl ay:
>XDOS par amet er s
dosi ng t i me 00: 01: 00
•
Enter the length of time for the addition in ‘hours:minutes:seconds’
format (if a mistake is made press the <CLEAR> key and repeat the
entry). Accept the value with <ENTER>.
Di spl ay:
>XDOS par amet er s
t emp. measur i ng: of f
QUIT
NO
•
No further entries are necessary in the ‘XDOS parameters’ submenu.
Exit with the <QUIT> key.
Di spl ay:
par amet er s