Metrohm 711 Liquino User Manual
Page 32
3.2 Tutorial
711 Liquino, Instructions for use
26
MANUAL
MAN OFF
D
•
Operating the <MAN. OFF / MANUAL> key switches manual operation off
again. The Liquino is again in the basic condition.
If you want to dose a particular volume several times then select the 'Dis-
pense' function. Proceed in a similar manner to dosing.
MANUAL
MAN OFF
D
•
Switch the Liquino to the manual operating mode by pressing the
<MANUAL> key.
Di spl ay:
manual
r eady 0. 000 mL
DOS NR
SELECT
P
•
Use the <DOS NR / SELECT> key to select the connected dosing device.
PREP
4
L
•
Prepare the dosing unit again by pressing the <PREP> key. Accustom
yourself to rinsing the dosing units with which you want to work by means
of the 'PREP' function before you use them. This is an absolute necessity
when you change the reagent. Other things which must be taken into ac-
count when a reagent is changed are mentioned below.
DISPENSE
8
H
•
When you have prepared the dosing unit press the <DISPENSE> key.
Di spl ay:
manual DI S
vol ume? 1. 0 mL
CLEAR
Q
•
Enter the required volume. If you do not want to dose a particular volume
or if you want to correct a faulty entry press the <CLEAR> key.
Di spl ay:
manual DI S
vol ume? i nf i ni t e mL
•
You can enter a new value or confirm the value 'infinite'. In this case dosing
or dispensing will be carried out automatically until you press the
<STOP> key.
<ENTER>
START
Z
•
After you have entered a value and confirmed it with <ENTER> you can
start to dispense with the <START> key. You also have the possibility of
first altering the dosing speed. This is set to the maximum dosing speed
as standard.
Di spl ay:
manual DI S
r at e? max mL/ mi n
The maximum dosing speed depends on the dosing unit used and the
cylinder volume. For example, for a 10 mL cylinder it is 33.33 mL/min, for a
50 mL cylinder 166.66 mL/min. The same values apply to the filling speed
of the dosing unit.
•
For viscous reagent solutions you should select a lower dosing speed as
otherwise a large counterpressure could build up in the tubing during rap-
id dispensing.
START
Z
•
If you press the <START> key the required reagent volume will be dosed.
This can be carried out several times. The 'DISPENSE' function is repeti-
tive.
FILL
5
M
•
Filling the dosing cylinder can be triggered with the <FILL> key.