RC12
BP™
Controls, Indicators, and Displays
3-5
Primary Function Keys
and HOME Screen Fields
The Primary Function Keys are the keys below the SET display. Each
key is positioned below a corresponding field in the HOME screen,
allowing simple, direct access to basic run parameter controls:
ROTOR (reserved for future use) would be pressed to specify a
different rotor than the one shown in the SET display, which would
be necessary if the rotor or bucket/carrier system installed in the
centrifuge were to change. Because there is only one rotor that is
compatible with the centrifuge at this time, the ROTOR key presently
has no function. As future rotors are added, they will be listed by rotor
name, and the ROTOR key would be pressed to scroll through the
compatible rotors for selection. Correct identification of an installed
rotor is required to establish set SPEED limits, correctly calculate
RCF, and accurately control sample temperature. If a rotor is able to
use buckets/carriers with different maximum radii, each configura-
tion will be listed for selection, to calculate the different RCF. The
ROTOR key is not active when a run is in progress.
NOTE In the future (only after new rotors have been added),
ensure that the installed rotor is correctly identified by
changing the SET rotor name immediately after changing
the installed rotor.
SPEED is pressed to specify a different rotor speed in revolutions per
minute (rpm) or relative centrifugal force (RCF, also known as g-
force) than the value shown in the SET display. Speed is selectable
from 150 to 4700 rpm (the maximum rated speed for the H-12000
rotor), or as an equivalent RCF calculated at the maximum radius of
the rotor (rotor geometry only). Changing from rpm to RCF or RCF
to rpm is done by repeatedly pressing SPEED: pressing once causes
the value to flash so a change can be made in the existing mode,
pressing again changes to the other mode and displays a value
equivalent to the previous, pressing again causes that value to flash so
a change can be made, and so on. An entered value will continue to
flash (prompting input) when it is out of range for the rotor. The
formula used to calculate RCF is:
RCF = 11.17 x radius in cm x
(
rpm
1000
)
2
SPEED
TIME TEMP
ROTOR
ACE
HOLD
RECALL
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