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9 Temperature Control
Temperature of the sample is controlled by detecting the rotor temperature through the
temperature sensor. This centrifuge will automatically compensate changes in
temperature due to difference of rotors, based on the ID code and the speed of the rotor in
use. Operator only needs to set the desired temperature and let the centrifuge optimize its
temperature control.
9.1 Sample temperature during the run
CAUTION:
When a rotor at room temperature is used under the low set
temperature, it will take a longer time to reach the set value. Some temperature
sensitive sample may lose activity during this time. So it is necessary to cool the rotor
by pre-cooling function before loading this sample in the rotor. Pre-cool the rotor
according to the section 7.5.
Changes in sample temperature during operation may vary depending on the rotor type.
Although the centrifuge displays the sample temperature, reading and actual difference
may still arise e.g. in a short time operation; if the rotor used and the setting have
significant temperature difference.
9.2 High-temperature operation
CAUTION:
Running a rotor with a temperature set between 30
℃
and 40
℃
may
deform the tubes or bottles as they are softened by high temperature. Perform test
operation under the same conditions with the tubes or bottles to be used filled with
liquid in advance, to ensure that it does not melt or deform.
Since this centrifuge is not equipped with a heater, friction heat caused by the rotating
rotor is utilized to increase the rotor (sample) temperature. Therefore, the desired
temperature may not be reached due to low heat quantity even if the temperature is set
above the room temperature if the set speed is too low.
