Operating Procedures; Accessory Installation - TA Instruments TMA 2940 Operator's Manual

Operating
Procedures
NOTE:
Accessory
Installation
TA I TMA 2940
NSTRUMENTS
Film or fiber samples, held in tension during
operation, are generally longer than expansion
or penetration samples, therefore, the small
temperature gradient normally present in the
furnace is more significant. A faster heating rate
serves to accent this gradient. For the best
reproducibility, when creating a method, use a
Ramp segment of 5 C/min or less for your
o
heating rate. (See the Thermal Solutions/
Advantage User Reference Guide for details.)
When comparing run data, make sure that all
comparison scans are made with the thermo-
couple in the same position and at the same
heating rate.
Because the configuration of the film/fiber
accessory is different from the other types of
probes, you will need to perform the following
general steps to install the special film/fiber
probe and stage:
• Remove the existing probe
• Remove the stage
• Change the instrument mode
• Install the film/fiber probe
• Install the film/fiber stage
• Calibrate the probe
• Calibrate temperature and cell constant.
Film/Fiber Accessory
4–5