Switching From Speed To Rcf Display; Entering The Rcf Value; More About The Rcf Value - Fisher Scientific accuSpin 1 Operating Instructions Manual

For faster operation, you may shift the flash-
ing cursor in the speed/RCF and the run
time panels: just press both
simultaneously. The cursor moves by one
digit to the left for each key depression.

Switching from speed to RCF display

Upon turning the centrifuge on, the speed display is
set.
Use the speed mode selection key
entry and display between rpm and RCF.

Entering the RCF value

You can adjust the RCF set point in steps of 1. The set
point is entered analogously to the speed.
NOTE:
If you set an extremely low RCF value, this may be
automatically corrected if the resulting speed would be
lower than 300 rpm.

More about the RCF value

The relative centrifugal force (RCF) is given in multi-
and
ples of the earth gravity g. It is a dimensionless number
that allows one to compare the efficiency of separation
or sedimentation of diverse instruments, since it is
independent of the instrument used. The only values
entered in the equation are radius and speed of cen-
trifugation
RCF
to switch speed
r = radius of centrifugation in cm
n = speed in rpm
The maximum RCF value refers to the maximum ra-
dius of the tube bore.
You may take this into account when calculating the
RCF value for your application.
:
2
 
n
= ∗ ∗
11 , 18   r
 1000 
Please note that this value decreases
depending on the tubes and adapters used.
Operation
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