Discovery TGA™ Getting Started Guide Page 34
3 Connect the primary gas line to the GAS 1 port. If desired, connect a secondary gas to the GAS 2 port.
Refer to Figure 14
for reference.
NOTE: The flow rate is controlled through settings chosen using the instrument control software.
4 Connect the 1/8-inch Teflon TFE tubing from the instrument to the purge gas inlet, as shown below.
Figure 14 Gas connections on rear of Discovery TGA.
5 Make sure that the pressure of your purge gas source is regulated between 70 and 140 kPa gauge
(10 and 20 psig, respectively).
CAUTION: The GAS 1 and GAS 2 lines feeds into a pressure relief valves that are set to 140 kPa
gauge (20 psig). The source pressure setting should not go above this value.
MISE EN GARDE: Les conduites de gaz 1 et 2 alimentent une soupape de détente de pression réglée
à 140 kPa (pression manométrique) (20 psig). Le réglage de la pression à la source ne doit pas
dépasser cette valeur.
6 Specify the connected gas on the Discovery TGA > General page of the TRIOS Options.
7 Set the sample flow rate to the recommended value for your experiments (depending on furnace type)
through the Control Panel options within TRIOS instrument control software. Refer to Table 3 on page 24
for a list of recommended purge rates for the different furnaces.
WARNING: If connecting oxygen, it should ONLY be connected to the GAS 2 port.
AVERTISSEMENT: Tout raccordement de l'oxygène doit s'effectuer UNIQUEMENT sur l'orifice à
gaz 2.
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