Ratek TH8500 Programmable Immersion Heater Circulator - User Manual
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Page 8 of 28
Recommended Liquids
Care should be taken when selecting the most appropriate heating medium for use with the Immersion Heater Circulator to ensure
optimum performance and user safety. Please refer to the table below as a guide :
Primary Temp Range °C
Recommended Medium
Comments
-30 ~ 50
50% water, 50% laboratory ethylene
glycol
Use a lid to reduce the dilution of the medium caused by
condensing water vapour from the air.
0 ~ 30
0 ~ 100
80% water, 20% laboratory ethylene
glycol
Laboratory ethylene glycol will prevent freezing at 0°C and
reduce evaporation at 100°C and as such is a good all purpose
heating medium. Use a lid to reduce the dilution of the medium
caused by condensing water vapour from the air.
Recommended over water alone for most applications
between 0° and 100°C
5 ~ 60
Water
Water alone is suitable for most low temperature applications,
however laboratory ethylene glycol should be used if working
above 60°C to reduce evaporation, reduce the chance of
scalding by steam and help maintain temperature stability. At
temperatures approaching 100°C the temperature stability
will be affected due to localised boiling if laboratory ethylene
glycol is not used .
The units should not be used to boil
water.
Safety Warnings
Throughout this User Manual, specific warnings will be supplied which relate to the current operation being referred to. These warnings
are supplied in addition to the main warning labels affixed to the product and the key points outlined in the section of this User Manual
titled ‘Operator Responsibility – Safety Considerations’.
A graphical symbol as pictured below will be used next to each warning with accompanying text, the danger level for each is described
below :
CAUTION
Indicates a possibly dangerous situation which may result in serious injury or threat to life as a result of scalding or
burns if the situation is not avoided.
CAUTION
Indicates a possibly highly dangerous situation which may result in serious injury or threat to life as a result of
electric shock if the situation is not avoided.
CAUTION
Indicates a possibly harmful situation which may result in injury or damage to product or property if the situation is
not avoided.
Safety Recommendations
The following safety recommendations must be followed to prevent damage or injury. In addition to these safety recommendations,
it is assumed that the user and operator have had experience in a commercial environment, and had appropriate training in how to
perform their work safely in accordance with any local operational health and safety regulations. The operator and all users should
be well versed in local emergency procedures as per the workplace safety regulations in effect.
