Thermo Scientific Sorvall ST Plus Series, Инструкция по эксплуатации

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2-8
Operation
RCF Value Explained
The relative centrifugal force (RCF) is given as a multiple of the force of gravity (g). It is a unitless
numerical value which is used to compare the separation or sedimentation capacity of various
centrifuges, since it is independent of the type of device. Only the centrifuging radius and the speed
are used for calculation:
r = centrifuging radius in cm
n = rotational speed in rpm
The maximum RCF value is related to the maximum radius of the tube opening.
Remember that this value is reduced depending on the tubes, buckets and adapters used.
This can be accounted for in the calculation above if required.
2. 5. 3. Use of Tubes and Consumables
Make sure that the tubes and bottles used in the centrifuge are:
ƒ
rated to or above the selected RCF to be spun at,
ƒ
used at their minimum fill volume and not above their maximum fill volume,
ƒ
not used above their design life (age or number of runs),
ƒ
undamaged,
ƒ
fitting well into the cavities.
Please refer to manufacturers’ data sheets for further information.
2. 6. Identify Rotor and Buckets
The centrifuge has a rotor detection that identifies an installed rotor. If a swing-out rotor is identified, the
centrifuge prompts you to identify the bucket type installed in that rotor.
Rotor detection relies on a list of rotors stored in the memory of the centrifuge. If an unknown rotor is detected,
please contact customer service. An update for that rotor list might be available to accommodate new rotor
models.
To identify a newly installed rotor and its buckets using a centrifuge with a GUI:
After installing the rotor, close the centrifuge lid and start the centirfuge using the Start button . Wait for the
“Rotor Detection” prompt to appear.
Figure 2–14: Rotor Detection: Choosing a Bucket Type for a TX-750 Rotor
» Swing out rotors with a choice of bucket types: Tap the “ buckets ” pop-up menu and choose the
bucket type installed in your rotor.
If there is no need to confirm bucket type in the future—for example, because you use just one bucket
type throughout, select the “Do not show this message again” checkbox.
This setting can be undone at any time using the “Bucket” setting, as explained in “Rotor Bucket” on
page 3-40.
Tap the Save button to confirm your changes.
The rotor has been successfully detected, and the centrifuge is ready for use now.
The rotor detected by the centrifuge and the bucket type identified by the user appear.
If the rotor is unknown to the centrifuge, the “Unknown Rotor Detected” pop-up window will be shown. Tap
the Cancel button to close this pop-up window, remove the unknown rotor, and replace it with a known type.