TA Instruments TGA 2050 - Aligning the Sample Hang-Down Wire

TA I NSTRUMENTS TGA 2050 2–27
Installing the Hang-Down Wires
Aligning the Sample
Hang-Down Wire
To avoid weight signal noise, the TGA instru-
ment must be level so that the sample pan and
hang-down wire hang inside the furnace and
hang-down tube without touching them. The
angle at which the pan hangs is very sensitive to
slight irregularities in benchtop surfaces, so it is
important that you select a sturdy table or bench
for your TGA.
Once you have your TGA in a satisfactory
location, adjust the top and bottom of the sample
hang-down wire and level the instrument using
the following procedures.
To align the top of the sample hang-down wire:
1. Place an empty sample pan on the sample
platform.
2. Press the LOAD key on the instrument
keypad. The TGA will automatically lower
the furnace (if necessary), move the sample
platform over to the furnace, and load the
pan onto the balance.
If the pan will not automatically load, place
the pan manually (using brass tweezers) on
the sample hang-down wire and continue
with the procedure. Use the Sample Plat-
form Adjust procedure (page 2-31) to
correct loading after completing sample
hang-down wire alignment.