Metrohm tiamo 2.4 Manual - Manual (Page 1221)

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5 Method
tiamo 2.4
￭￭￭￭￭￭￭￭ 1205
Eject to end volume
The whole cylinder content is ejected via the given port. In contrast to
the function Eject to stop, the piston moves only to the maximum
volume mark, i.e. until it has executed 10'000 pulses. This command
should be used for pipetting functions for emptying the cylinder.
Exchange position
With this function the cylinder is filled via the given port first. The valve
disc is then turned to Port 2 and the dosing unit can be removed from
the dosing drive.
Change port
With Change port the valve disc is only moved to the given port; no
piston movement takes place.
Compensate
As the dosing units are exchangeable, the coupling of the Dosino pis-
ton rod (spindle) has a low mechanical tolerance that can be noticed
when the piston changes its direction of movement. This tolerance can
be compensated for with the Compensate function. A short piston
movement is first made in the same direction as the previous move-
ment, which is then followed by a piston movement in the reverse
direction.
Port
The port where each function is to be carried out needs to be defined for
each liquid handling command.
Selection 1 | 2 | 3 | 4
1
Default setting for Dosing and Aspirate
2
Default setting for Fill, Exchange position and Change port
4
Default setting for Eject to stop, Eject to end volume and Compensate