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20.2 Continuous
operation
Set the minutes, seconds and hours to "0" or start a continual run program (see chapter "Enter centrifugation
parameter" or " Calling up programs").
Start the centrifugation run via the interface. The LED in the
START
key blinks until the rotor has been imported,
it is subsequently lit. The time count starts from 00:00.
End the centrifugation run via the interface or by pressing the
OPEN / STOP
key. Run- down is carried out with the
selected run- down parameters. The run-down parameter is displayed e.g.
9. The right-hand LED in the
OPEN / STOP
key is lit. Once the rotor has come to a standstill, the LED in the
START
key and the right LED in the
OPEN / STOP
key switch off and the left LED in the
OPEN / STOP
key lights up.
During the centrifugation run, the rotor speed or the RCF value, the temperature in the centrifuging chamber (only for
centrifuge with cooling), and the elapsed time are displayed.
21
Change the settings during the centrifugation run
During the centrifugation run centrifugation parameters can only be changed via the interface (key position
"LOCK 2"). The functions of the various key positions are described in the "Key-operated switch" chapter.
The runtime, speed, relative centrifugal force (RCF), start-up and run-down parameters as well as temperature (only
in centrifuges with cooling) can be changed during the centrifugation run.
Change the value of the desired parameter via the interface.
The changed setting is saved at program place "0" (see chapter "Automatic temporary storage"). The original
program is not overwritten. The program place number is displayed in parentheses ().This means that the
centrifugation data in the display no longer corresponds to the centrifugation data from the program place that
has been saved.
22 Integral
RCF
The integral RCF is a measure for the effect of sedimentation (
∫
n
2
dt). This numerical value is used to compare
centrifugation runs.
22.1
Query integral RCF
The integral RCF can be queried via the operating unit (key position "0") or via the interface (key position
"LOCK 2"). The functions of the various key positions are described in the "Key-operated switch" chapter.
You can only query integral RCF if the integral RCF display is activated. See chapter "Activate or deactivate
integral RCF display".
The integral RCF is not saved. After starting the next centrifugation run or after switching off the device, the
integral RCF is deleted.
If the function,
"Timing begins at speed
" is selected, calculation of the integral RCF begins once the set
speed has been reached.
Press the
RCF
key as often as is necessary until the integral RCF is displayed, e.g.
=4.8667e+05
(
=4.8667e+05 = 4,8667
10
5
= 486670).
Press the
RCF
key. The centrifugation data are displayed again.
If necessary, press the
RPM
key to switch over to the RPM display.
