Running Experiments
3–18 TA I
NSTRUMENTS
TGA 2050
Using the Air
Cool Option
You can program the system to air cool the
furnace automatically at the end of the experi-
ment by selecting this option from the TA
controller. After the air cool is activated, it will
continue to run for the desired time.
Before you start an experiment that uses the air
cool option, ensure that the supply valve from
the air source is open and that the pressure is
regulated to between 25 and 120 psig. Nitrogen
can also be used as a cooling gas.
Air Cool can be used with the furnace closed.
However, if the temperature is above 500°C, the
furnace will cool naturally until it is 500°C or less,
then Air Cool will begin.
Using the Gas
Switching Accessory
You can use the Gas Switching Accessory to
turn the purge gas on and off or to switch
between two different purge gases during a TGA
experiment. Before starting an experiment that
uses the Gas Switching Accessory, make sure its
power switch is on, and make sure the necessary
gas sources are properly connected.
The Gas Switching Accessory can be controlled
by the Gas segment in the method (see the
online help and documentation) or by the Gas
control option.
NOTE:
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