Metrohm 900 Touch Control Manual - Manual (Page 452)

29.15 Dosing and Liquid Handling
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900 Touch Control
For buret units with integrated data chip, a check is made in the method
run to verify whether the correct titrant has been attached and whether
the type of dosing drive matches. For buret units without integrated data
chip, the cylinder volume and the type of dosing drive are checked. For
the selected titrant, the validity of the titer, the working life of the titrant
and the time interval for the GLP test of the buret unit are checked at the
start of the determination.
Selection Selection of configured titrants | not defined
Default value not defined
not defined
No check takes place. The command is carried out with default param-
eters (see Chapter 32.1.2, page 488 and Chapter 32.2.2, page 489).
Cylinder volume to
This parameter can only be edited with Titrant = not defined.
Selection of the port via which the titrant is ejected. This setting is only rel-
evant for dosing units, in case of preparing an exchange unit, this setting
is ignored.
Selection Port 1 | Port 2 | Port 3 | Port 4
Default value Port 1
29.15.2 Emptying a dosing unit (EMPTY)
The EMPTY command is used to empty the cylinder and tubings of the
dosing unit.
Control device
This parameter is only displayed when several control devices are config-
ured. Control devices are defined under System
▶ Device manager.
Selection of the control device from the list of devices. The control devices
do not have to be connected. This allows to transfer methods more easily
from one system to another.
Selection Selection of configured control devices
Dosing device
Selection of the MSB connector the dosing device is connected to. Every
MSB connector will always be displayed.
Selection 1 | 2 | 3 | 4
Default value 1
Titrant
Selection of the titrant from the titrant list. We recommend always select-
ing the titrant. This ensures that the parameters defined for the titrant for