Page 2 - Shimadzu TGA-50 Series

The standard for high-sensitivity suspension-type thermobalance

The TGA-50 Series light-weight balance mechanism and taut band fulcrum are highly vibration tolerant and
provide stable, high-sensitivity thermogravimetric measurement. One of the benefits of suspension-type
balances is that measurement is not limited by the shape of samples or sample cells.
A wide variety of cells such as high-capacity cells and mesh cells, which enable gas distribution within a
sample, are available to satisfy the needs for various applications.

High sensitivity and
high vibration tolerance

In thermogravimetric measurement using the TGA-50 Series, minute
variations in mass can be detected. In addition, a taut band fulcrum
that makes up the balance mechanism is highly vibration tolerant, so
measurement with excellent repeatability is achieved.

TGA
mg
0.200
0.000 -81.653%

-0.200
-0.400

-0.600
0 200 400 600 800 1000
Temp (%)
a
T
t(
Amoun
race
fa
o
g)
le
Samp
CNT
ox
ppr
a
m
5
0
Measur
Measurement of a Trace Amount (approx. 0.5 mg) of a CNT Sample
ement
of
Taut band
Balance beam
Gas inlet (2)
Magnet
Gas inlet (1)
Radiation fin
Thermocouple
Heating furnace
Sample
˙ Principle and Structure of the TGA-50
Thermogravimetric measurement (TG) is a technique where the temperature of the
sample is changed at a certain rate and the mass variation that occurs in relation to the
temperature is measured. It is used to measure various processes such as evaporation,
decomposition, gas adsorption/desorption, and dehydration. When the mass of the
sample changes, the balance of the balance system changes. The change is detected
optically and electric current flows to the feedback coil to keep the balance of the
balance system in its original state. The current is proportional to the mass variation.

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