Refrigerated Centrifuge with Heating System Sigma 4-16KHS
6 Using the centrifuge
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Version 10/2012, Rev. 1.22 of 08/05/2020
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Translation of the original operating manual, part no. 0701802
Acceleration
This function is used to select an acceleration curve. One can select a
linear rise (curves 0-9) or a quadratic rise (curves 10-19). The acceleration
curves 20-29 can be programmed as desired (see chapter 11.3 -
"Acceleration and deceleration curves").
Deceleration (brake)
This function is used to select a curve that decelerates the centrifuge to a
standstill. Deceleration curves are inverted images of the acceleration
curves and are labelled with identical numbers. Deceleration curve no. 0
represents a brakeless deceleration.
Progr.: program list
This field in the "Standard" menu shows the program that is currently
loaded. When the field is selected, the program list is displayed (for
information on how to work with the programs, please see chapter 6.3.3 -
"Program mode").
The program "RAPID_TEMP" (see below) cannot be deleted.
Fig. 15: Program list
Program "RAPID_TEMP"
Precooling or preheating at a standstill may distort the measurement results
and cause the increased wear of the mechanical components. This is why
the centrifuge has a special program that precools or preheats the rotor
chamber rapidly to a preset value under defined conditions.
• Select the option "Progr" in the "Standard" menu and confirm the
selection. The program list will be displayed.
• Select the program "RAPID_TEMP" on the program list and confirm the
selection. The display shows ⅓ of the maximum rotor speed and the
corresponding RCF value. The deceleration (brake) and acceleration
curves correspond to curve 9 and the runtime field indicates "infinite"
(continuous run).
