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4.3 General system settings
Check/Set delay volume
When a module has been installed after the UV monitor in the flow path, the delay volume has to be
adjusted in the System Setting dialog in UNICORN, to make sure that the collected fractions correspond
to the fractions indicated in the chromatogram.
Delay volumes can be set for the options Monitor to outlet valve, Monitor to frac, Monitor to frac 2,
and pH valve. Depending on the system configuration used, different delay volume options will be
available for selection in the System Setting dialog. The delay volume has to be set for all displayed
options.
Delay volumes for modules and standard tubing configurations are found in Section 9.13 Delay volumes,
on page 494.
Follow the instructions below to check/set the delay volumes:
Action Step
• In the System Control module, choose System:Connect to Systems or click the Con-
nect to Systems icon.
Result: The Connect to Systems dialog opens.
1
• Select a system.
• Select Control mode.
• Click OK.
Result: The selected instrument can now be controlled by the software.
2
• When the system is in state Ready, select System:Settings.
Result: The System Settings dialog is displayed.
3
• Select Tubing and Delay Volumes and select the delay volume option of interest.
• Check the delay volume in the Volume field and enter a new value if necessary.
• Click OK.
4
146 ÄKTA pure User Manual 29119969 AB
4 System configuration
4.3 General system settings