Metrohm tiamo 1.2 Manual - Handbuch (Seite 530)

504 Method
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 ex-
change.
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 di-
rectly 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 fol-
lowing 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 beakers). The following settings
have to be done in the command
MOVE under the parameter Target :