Metrohm 726 Titroprocessor - Manual (Page 190)

8.10 Sample changer commands
726 Titroprocessor, Instructions for use 184 184
when processing the CHANGER command the sample
changer will be initialized again, the rack code of the
sample rack used will be read and compared with the
configuration data (and thus the rack name) in the rack
tables.
Lift rate 1 / 2
Lift speed at tower 1 and 2
3…25 mm/s
If a lift head is heavily loaded with titration accessories,
several sensors, etc. then the lift speed should be re-
duced. It is possible to set different speeds for the two
lift towers.
Shift rate
Rotational speed of the turntable
3…20 °/s
The rotational speed of the sample changer turntable
can be varied according to the load.
Beaker test mode
Test mode of the beaker sensor
single |both
After each MOVE command of the sample changer the
beaker sensor of the changer tower checks whether a
beaker is present in the rack position which has been
moved to.
For racks whose arrangement of beaker positions does
not correspond with the setting angle of both the
changer towers (e.g. 14-place, 16-place racks) the test
mode 'single' should be switched on. In this way only
the beaker sensor of the approached tower is activated.
If parallel processing is carried out at two towers then,
provided a suitable rack is used, the test mode 'both'
can be selected.
Shift direction
Rotational direction of the sample rack
auto | + | –
There are different settings for the rotational direction of
the sample rack:
auto the changer always selects the
shortest rotational path
+ counterclockwise direction, towards
higher rack positions
– clockwise, towards lower rack
positions
Take care that samples which have not been processed
are not contaminated by dripping sensors or similar.