Beckman Coulter Microfuge 20 Series, Инструкция по эксплуатации

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B30162AA 2-5
Operation
Run Procedure
2
Setting Run Speed
The RCF value is determined by the rotor geometry and speed. The RCF and speed values, therefore,
depend on each other. If one of the two values is entered, the other value will be set automatically.
Centrifuge speed can be set for the maximum rated speed of the selected rotor. Either revolutions
per minute (RPM) or relative centrifugal field (RCF) can be used to select speed. During
centrifugation, the
SPEED
display indicates the actual run speed (RPM) of the rotor.
To set the speed
1
Press the
MENU
key until the speed unit flashes on the display.
•
The RPM unit on the
SPEED
display flashes, indicating that the RPM can be entered
(in 100-RPM increments) with the cursor keys.
•
To enter the speed in RCF, press the
MENU
key again. The speed in RCF flashes.
• Program mode ends if no other keys are pressed within 15 seconds.
2
Press the or arrow key until the required RPM or RCF speed is displayed.
•
The corresponding RCF is automatically calculated by the centrifuge, but the RPM value is
displayed during the run.
•
You can check the RCF during the run by pressing the or key while the centrifuge is
running.
3
Press the
MENU
key until all screen functions stop flashing, to confirm the selection.
•
The speed setting will be saved after approximately 20 seconds if no other key is pressed
within this time period.
Setting Run Time
The run time is displayed in the middle line of the display. During centrifugation, the remaining run
time is displayed. The run time of the centrifuge can be set at one-second intervals up to 99 minutes
and 59 seconds.
Run time can be set for either a timed run or continuous operation.
Timed Run
Time can be set for up to 99 minutes and 59 seconds (if the seconds parameter entered exceeds 59,
it is automatically converted into minutes). During centrifugation, the
TIME
display begins counting
down when the rotor starts to spin and continues the count-down until deceleration begins.
The
TIME
display shows the time remaining in the run, in minutes and seconds. When the time
display reaches zero, the run ends.