Thermo Electron SORVALL RC3BP, Руководство по эксплуатации

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3-2
Controls, Indicators, and Displays SORVALL

Centrifuges
RUN Display
The RUN display is the dark grey area toward the top of the control
panel, and is comprised of three fields of large red LEDs that
indicate the current measured/calculated conditions during a run:
• The run SPEED (RPM/RCF) field indicates either the current
measured rotor speed (in rpm) or, if RCF is selected (RCF
indicator is lit), the relative centrifugal force (or
g -force) that is
currently being generated at the maximum radius of the selected
rotor. The rpm values are rounded to 10s above 200 rpm. At run
completion (zero speed) the display will show the word "End"
until the door is opened.
• The run TIME (MIN:SEC/ACE) field indicates:
– If controlled by TIME, the display counts down from set
time, showing the time remaining (in minutes and seconds)
until the run terminates and deceleration begins,
– If controlled by HOLD (indicated in the smaller SET display
below), the display during a run counts up, showing the
time elapsed (expressed in minutes and seconds, up to a
maximum of 99:59) since START was pressed, or
– If controlled by ACE (Accumulated Centrifugal Effect™,
ACE indicator lit), the RUN display shows the current
calculated ACE value (
∫ω
2
dt). When the set ACE value is
reached, the run terminates and decelerates to a stop. The
displayed value continues to calculate the centrifugal effect
during deceleration to zero to show total accumulation.
Monitoring alternative parameters
If a run is in progress and an alternative run duration key is
pressed (for example, pressing TIME when an ACE run is in
progress), the RUN display will change to show an accumulating
value in terms of the newly selected method. The SET display
and ACE indicator status will not change to that method, but
will continue to show the control method and value that was in
effect when START was pressed. Run duration will continue to
be controlled by the SET display value, regardless of the duration
method showing in the RUN display. This ability to change the
RUN display value can help determine equivalent settings when
considering alternative control methods. If the same alternative
key is pressed again, the SET display will display the flashing
value (from the previous run) expressed in that control method
– entry will change duration control to that method and the
RUN display will continue counting based on the new entry.
TIME
MIN / SEC
SPEED
RPM
TEMPERATURE
°
C
ACE RPM RCF