VWR PROFESSIONAL Serie Manuel D'instruction page 9

H O T
EATING PERATING IPS
Overshoot:
The unit may overshoot the temperature up to 10°C before stabilizing at the
set-point. The two methods suggested to minimize overshoot are:
1. Metal containers minimize overshoot. CAUTION! When heating metal
containers on a ceramic top it is recommended to use the lowest
temperature setting possible to limit thermal stress to the ceramic top.
2. If a glass vessel is used, anticipate overshoot. Start with a setting 5
to 10°C below the desired temperature. When the temperature
stabilizes at this lower setting, press the up/down arrows to the final
temperature. Overshoot is then reduced to about 1°C.
T T T B W
YPICAL IME O OIL ATER
The chart below is an example of an approximate time to boil for the specified amount of water in a specific vessel.
These values are only approximate and can vary from unit to unit. Values are based on 23ºC water in an ambient environment of 23ºC.
Size of Top Plate Volume of Water
18 x 18 1500ml in 2000ml beaker
5000ml in 6000ml
25 x 25
Erlenmeyer Flask
CERAMIC TOP
Time
The temperature display on the units show the actual temperature of the
heater not the top plate or sample. The vessel contents being heated may be
at a lower temperature depending on the size and insulating qualities of the
vessel. It may be beneficial to monitor the temperature of the vessel
contents and adjust the set-point temperature accordingly. If you need
precise control a probe will be necessary.
Size of Top Plate
45 18 x 18
60 25 x 25
ALUMINIUM TOP
Volume of Water
1500ml in 2000ml beaker
5000ml in 6000ml
Erlenmeyer Flask
Time
60
70
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