Thermo Scientific SL40 Instruction Manual page 28

The relative centrifugal force is given as a multiple of the force of gravity g. It is a unitless numerical
value which is used to compare the separation or sedimentation capacity of various devices, since it
is independent of the type of device. It simply involves the rotational radius and the rotating speed:
RCF
r = Rotational radius in cm
n = Speed in rpm
The maximum RCF value is related to the maximum radius of the tube.
Remember that this value is reduced depending on the tubes and adapters used.
This can be accounted for in the calculation above if required.
Running time preselection
1. Press the
The display shows the message "Set Time".
Enter the desired runtime in hh:mm
2. Enter the desired value by pressing the
Continuous Operation
1. Press the "START" key
During continuous operation, the centrifuge will continue running until you stop it manually.
Preselecting the Temperature
You can preselect temperatures between -10 °C and +40 °C.
To set the temperature, proceed as follows:
1. Press the
selection menu.
The display shows "Set temp".
2. Enter the desired value by pressing the
Thermo Scientific
2
n
〈 〉
×
------------ -
11 18 ,
=
1000
key below the TIME display in order to open the runtime selection menu.
.
key below the TEMPERATURE display in order to open the temperature
Explanation of RCF Value
×
r
key repeatedly, until the desired value shows.
key repeatedly, until the desired value shows.
4
Operation
Entering Parameters
SL40 / 40R 4-5