Metrohm tiamo 1.0 Manual - Manual (Page 471)

Commands 447
Calibrating with automatic solution changing
The basic structure of a calibration method with automatic solution exchange on a
Sample Processor looks as follows:
Defining the number of buff-
ers/standards and type of solution
exchange.
Move to the next buffer/standard.
The request for changing the buffer/standard must be deactivated in the com-
mand
CAL LOOP pH or CAL LOOP Conc respectively. No request for changing the
buffer/standard is displayed during the method run.
For the automatic move to the next calibration solution on the Sample Processor a
command
MOVE must be inserted between the loop command CAL LOOP and the
measuring command CAL MEAS . The positions of the calibration solutions on the
sample rack are defined in the command MOVE . There are three possibilities:
• Defining rack positions for calibration solutions in the method
A Rack position ### for the first calibration solution has to be defined
in the command MOVE . The other calibration solutions must be placed
on the directly following rack positions. The following settings have to
be done in the command
MOVE under the parameter Target :
Move : Rack position
Number : = ### – 1 + 'Command name.LCO' (entry with Formula editor,
i.e. = 19 + 'Calibration loop pH.LCO' for the above sample method with
the first calibration solution on rack position 20 ).
• Defining special beakers for calibration solutions in the method
A Special beaker ### for the first calibration solution has to be defined
in the command MOVE . The other calibration solutions must be placed
on the following special beaker positions. As many special beakers
must be defined for the sample rack as buffers or standard solutions
are required for the calibration (see Rack properties - Special beak-
ers). The following settings have to be done in the command
MOVE