Refrigerated Centrifuge with Heating System Sigma 4-16KHS
6 Using the centrifuge
Version 10/2012, Rev. 1.22 of 08/05/2020
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Translation of the original operating manual, part no. 0701802
Radius
The radius determines the values of the relative centrifugal force (RCF) that
the sample is subjected to. Normally, the maximum RCF value is displayed.
If the value is reduced manually, a downward facing arrow "
" will be
displayed in the RCF field.
Density
This setting is useful for glass vessels. If the density of the liquid to be
centrifuged is higher than 1.2 g/cm
3
, the value must be adapted manually in
order to prevent the glass vessel from breaking. This will reduce the
maximum possible final speed (see chapter 2.2.2.2 - "Density"). The
reduction will be represented by a downward facing arrow "
" in the speed
field. Values between 1.2 and 10.0 g/cm
3
are possible.
Centrifugation monitoring
The centrifugation monitoring function enables the continuous monitoring of
the speed and runtime parameters during the centrifugation.
• Activate the centrifugation monitoring function by clicking.
NOTE
If the function is activated during a centrifugation run, the monitoring
process will not be started until the start of the next centrifugation run.
The centrifugation monitoring function compares the speed values of the
current run with the reference values that are stored in the control unit.
After every run, it issues a corresponding message.
The runtime is considered faulty if the centrifugation run had to be stopped
prematurely.
Fig. 20: Example of a centrifugation monitoring message
NOTE
If the centrifugation monitoring system is used in combination with free
acceleration or deceleration curves, unjustified error messages may result
in certain cases.
