Installing the TGA 2050
2–18 TA I
NSTRUMENTS
TGA 2050
2. Make sure that the pressure of your purge
gas source does not exceed the manufactur-
ers recommended pressures for flowmeters
and other regulated devices you are using.
If you are using laboratory purge, rather than
bottled purge, you will need to install an external
drier.
The use of corrosive gases in the TGA 2050 are
not recommended.
Use of an explosive gas as a purge gas is
dangerous and is not recommended for this
instrument. For a list of the purge gases
that can be used with the TGA instrument,
see Chapter 1. Oxygen may be used as a
purge gas, but the furnace must be kept clean
of volatile hydrocarbons to prevent combus-
tion.
3. Connect a length of 1/4-inch I.D. flexible
tubing from each of the PURGE fittings to a
flowmeter (consult your compressed gas
vendor for specific requirements). Then
connect each flowmeter to the purge gas
source.
4. The recommended setting for the purge rate
is 100 cc per minute or less, with a flow
distribution of 10 percent to the balance
chamber and 90 percent to the furnace.
NOTE:
!
WARNING
t
CAUTION:
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