Discovery DSC™ Getting Started Guide
Page 29
Setting Up System Communication
The instrument and controller must connect to an Ethernet router/switch for operation. The router can also
be connected to a LAN to provide network storage and access, if desired.
Refer to
TRIOS Software Installation Instructions
for more details.
Connecting Lines to the Gas Delivery Module
It is important to accurately control the atmosphere of the Discovery DSC cell during the experiment. The
Discovery DSC is equipped with a gas delivery module (GDM) to control the flow rate of the gas used to
purge the DSC cell. Two different gases may be connected to the instrument to facilitate gas switching.
Follow these instructions to connect the purge lines.
CAUTION: Do not use any liquid in the purge lines.
MISE EN GARDE: N'utilisez aucun liquide dans les conduites de gaz de drainage.
Purge Gas Lines
1
Locate the
Gas 1
port on the back panel of the Discovery DSC. The
Gas 1
port is used to purge the
sample area, and is also used as a base purge. As such, an inert gas such as nitrogen must be used in this
port–not helium or air. A base purge is required when a sub-ambient cooling accessory is used.
2
Locate the
Gas 2
port. The
Gas 2
port is also used to purge the sample area and is used when a purge
gas other than
Gas 1
is desired or when gas switching during an experiment is needed.
3
Connect the primary gas line to the
Gas 1
port.
4
If desired, connect a secondary gas to the
Gas 2
port.
NOTE
: The flow rate is controlled through settings chosen using the instrument control software.
5
Make sure that the pressure of your purge gas source is regulated to 140 kPa gauge (20 psig), 34 kPa
gauge (5 psig) for oxygen.
CAUTION: The Gas 1 and Gas 2 lines feeds into a pressure relief valves that are set to 170 kPa
gauge (25 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 170 kPa (pression manométrique) (25 psig). Le réglage de la pression à la source ne doit pas
dépasser cette valeur.
6
Specify the connected gas on the
Discovery DSC
>
General
page of the TRIOS
Options
.
7
Set the flow rate to the recommended value of 50 mL/min for your experiments through the control
panel options within TRIOS Instrument Control Software.
NOTE
: If you are using a “house” laboratory supply rather than bottled gas, it is highly recommended that
you install an external drier and a 5-µm filter.
WARNING: If connecting oxygen, it should ONLY be connected to the GAS 2 port. Maximum
pressure for oxygen shall be no greater than 34 kPa gauge (5 psig).
AVERTISSEMENT: Tout raccordement de l'oxygène doit s'effectuer UNIQUEMENT sur l'orifice à
GAZ 2. Pression maximale d'oxygène ne doit pas être supérieure à 34 kPa (5 psig).
