Discovery TGA™ Getting Started Guide
Page 44
17
Slide the installation tool down to remove it from the upper reflective assembly. The hang-down wire,
if properly installed through the loop, will remain in position. Be careful not to bend the hang-down wire.
18
Adjust the length of the upper reflective assembly by pulling it down. The length from the bottom of the
baffle to the cooling plate should be 1.6 in (4.1 cm), which can be determined using the supplied gauge.
See the figure below.
Figure 28
Proper positioning of alignment gauge and upper reflective assembly.
19
Hang the desired sample pan from the hook. Choose the same type of pan that will be used for your
experiments.
Installing the Sample Hang-Down Wire on the TGA 55 and TGA 550
CAUTION: During installation, take care not to bend the hang-down wires or damage the hang-
down loops.
MISE EN GARDE: Pendant l'installation, prenez soin de ne plier les fils suspendus et de ne pas
endommager les boucles suspendues.
1
Verify that the instructions found in
“Preparing the Discovery TGA for Installation” on page 28
have
been completed. Both the balance housing cover and the balance cover should already be removed at
this point in the installation.
2
Press the FURNACE button to lower the furnace.
3
Locate the sample hang-down wire in your TGA Accessory Kit.
4
Hold the wire in your hand so that the doubly bent top hook is pointing to the left and the bottom hook
is pointing to the right.
5
Carefully insert the bottom of the hang-down wire into the top of the furnace far enough so that you can
insert the top of the wire into the thermocouple tube
without bending the wire
.
6
Thread the hang-down wire up through the thermocouple tube into the balance chamber, and hook the
top of the wire over the top of the tube.
7
Grasp the top hook of the hang-down wire with brass tweezers. Being careful to keep the top hook
pointing to the left, pass the double bend through the hang-down loop so the wire is hanging from the loop.
4.1 cm (1.6 in)
Hang-down hook resting on gauge
