TMA Q Series Getting Started Guide
38
Running a TMA Experiment
CAUTION: Drying out the instrument may be needed, if it has been exposed to humid
conditions. Certain ceramic materials used in this equipment may absorb moisture,
causing leakage currents to exceed those specified in the applicable standards until
moisture is eliminated. It is important to be certain that the instrument ground is
adequately connected to the facilities ground for safe operation.
Run the following method to dry out the TMA:
1 Ramp at 10°C/min to 400°C
2 Isothermal for 30 min.
All of your TMA experiments will follow the same general outline (see page 35). In some cases, not all of these
steps will be performed. The following sections provide more information on these steps. See the instrument
control software online help for anything not covered in this manual.
Selecting a Probe
The type of probe that you use is dependent upon the kind of testing information desired. The table below
lists the probes available, their specifications, and the type of testing yielded.
When choosing a probe to use for an experiment, follow these steps:
1. Select and install the appropriate probe for the analysis desired. See the table on the next page for a brief
description of the various probes available.
2. Perform a Probe Calibration for a newly installed probe or “zero” an already installed probe. (The
zeroing instructions are found in the next section.)
TMA Probe Types
Probe Type ContactDiameter Pressure Exerted by Types of Tests Yielded
mm (in.) 0.01 N Load
Penetration 0.89 (0.035) 16 kPa Softening point
Melting point
Expansion 2.54 (0.100) 1.9 kPa Expansion coefficient
Compression modulus
Tensile modulus
Glass transition
Macro Expansion 6.07 (0.239) 0.34 kPa Expansion coefficient
Compression modulus
Tensile modulus
Glass transition
Film/Fiber Not applicable Not applicable Tensile stress
(table continued)
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