Beckman Coulter Optima XL Series Instruction Manual page 65

CALCULATIONS
CONVERT RPM – – – RCF
CONVERTS BETWEEN SPEED (RPM) AND RELATIVE CENTRIFUGAL FORCE (RCF)
R O TOR =
TUBE =
r A V =
=
r M A X
ENTER A VALUE IN ANY ONE OF THE FIELDS BELOW
=
SPEED
P R E S S T H E R O T O R S O F T K E Y F O R R O T O R O P T I O N S .
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FIELD FIELD
Figure 6-2. Conversions Between Speed and Relative Centrifugal Force
TUBE —Use the arrow softkeys to select a g-Max tube for the conversion,
✮✷✽✮✻❛
then press .
rAV—The radial distance (in millimeters), halfway between rMAX and
rMIN, is filled in automatically when you select a rotor/tube combination
from the catalog. You may enter a different value manually, but doing so will
remove the rotor/tube combination previously entered. When you are finished
✮✷✽✮✻❛
with this field, press
rMAX—The radial distance (in millimeters) from the rotor's axis to the
furthermost surface of the tube is filled in automatically when you select a
rotor/tube combination from the catalog. You may enter a different value
✮✷✽✮✻❛
manually, then press
and TUBE fields will be cleared; the calculation may still be performed.
SPEED —Use the keypad to enter the speed in RPM and press
calculate RCF values.
RCFav—The relative centrifugal force at the average radius of the rotor. Use
the keypad to enter a value and press
RCFmax—The relative centrifugal force at the maximum radius of the rotor.
Use the keypad to enter a value and press
RCFav.
Depending on the inputs, the instrument calculates the following.
SPEED—Speed is calculated if you entered a value for either RCFav or
RCFmax. (Any value below 1000 rpm is shown as 0 rpm.).
mL
mm
mm
=
RPM – –– RCFav
RCFmax =
ROTOR
.
. If you change rMAX, however, the ROTOR
✮✷✽✮✻❛
to calculate speed and RCFmax.
✮✷✽✮✻❛
to calculate speed and
Calculations
X g
X g
CALC
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✮✷✽✮✻❛
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6-3