Beckman Coulter Optima LE-80K, Инструкция по эксплуатации

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2-4
Run Preparation
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The run termination method depends on the run mode—TIME,
ω
2
t,
or HOLD. The information that appears in the TIME-HR: MIN
display also depends upon the mode selected.
Run time can be set up to 99 hours and 59 minutes. During the run,
the display indicates the time remaining in hours and minutes.
(When
is pressed, however, the set time is shown for
5 seconds.)
To enter or modify the TIME setting (in TIME mode):
1. Press
_8-1)a
. The TIME field blinks.
2. Use the keypad to enter or modify the run time. As each digit is
entered, the previous digit moves one place to the left.
3. Press another parameter key or to save the run time.
If you entered a number that is between 60 and 99 minutes, the
instrument automatically recalculates the time in hours and minutes.
After you press and
_78%68a
to begin the run, the
instrument checks to make sure that a time entry has been made. (The
instrument cannot proceed without a valid entry for TIME,
ω
2
t, or
HOLD.) If you have not made an entry, the TIME field blinks and you
must enter one before the run can proceed.
The time begins counting down when the rotor begins to accelerate.
When the time remaining reaches zero, the rotor automatically decel-
erates to a stop.
(Accumulated
Centrifugal Effect)
The
ω
2
t display indicates the accumulated centrifugal effect in
radians squared per second, to three significant digits, using exponen-
tial notation. The
ω
2
t can be set for up to 9.99
×
10
14
radians squared
per second. The
ω
2
t begins accumulating when and
Example: To enter 16 hours and 30 minutes as the
run time:
Press
_8-1)a
.
Press
_a
,
_a
,
_a
,
_a
in that order.
Press another parameter key or .
Example: If you enter
_a _a
as your run time, the
instrument will change the entry to read
1:30.
ENTER/RECALL
ENTER/RECALL
ENTER/RECALL
ENTER/RECALL
ω
2
t
ENTER/RECALL