PerkinElmer TGA 4000, Installation And Hardware Manual

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58 . TGA 4000 Installation and Hardware Guide
Heating
The basic temperature range of the TGA 4000 is from ambient to 995 °C. Since the system is
liquid-cooled, it is possible, in principle, to begin a run at subambient temperatures.
However, condensation of water vapor on the cooling tubes around the furnace could occur
and should be avoided. Reducing condensation is the user’s responsibility.
The maximum heating rate at high temperatures is limited by the supply voltage, as shown
in the following table:
Supply Voltage / V Maximum heating rate at
900 °C / °C min
-1
Maximum heating rate at
995 °C / °C min
-1
180 or 90 42 0
200 or 100 134 26
220 or 110 200 118
230 or 115 200 138
240 or 120 200 143
250 or 125 200 145
The heating rate can be set in 0.1 °C/min increments. In general, lower heating rates lead to
better separation of transitions. For most experiments, a heating rate of 20 °C/min is
optimal. The free heating rate of the TGA 4000 furnace has been limited to 200 °C/min.