Connecting The Transfer And Exhaust Gas Lines - Thermo Scientific NICOLET FT-IR User Manual

Connecting
the transfer and
exhaust gas lines
Warning
Warning
12 Thermo Fisher Scientific
In a TGA-IR experiment, the sample gases from the TGA furnace
are conducted into the gas cell through the transfer line. The exhaust
gases produced during this process can be hazardous and should be
vented through the exhaust gas line. To connect the transfer and
exhaust gas lines, read the warnings below, and then use the
procedure that follows.
If the TGA furnace or gas cell has been heated recently, make sure
you allow at least two hours for all components of the module to
cool to a safe temperature before you begin this procedure.
Caution Make sure the power is turned off to both the gas cell and the TGA
furnace before you begin this procedure.
The TGA-IR Module is intended for use at ambient pressure, with
low pressure (5 psi or less) carrier gases flowing at a rate of
150 ml/minute or less. An aspirator is recommended to draw out the
exhaust gases. If you use and aspirator, set it for 10 inches Hg or
less. Operating outside these parameters could expose you to burn
hazards when heated gases vent unexpectedly.
To connect the transfer and exhaust gas lines:
1. Turn off the power to both the TGA-IR Module and the
TGA furnace.
2. Connect the transfer line to the TGA furnace.
For more information, refer to the manufacturer's documentation
that came with your furnace.