Appendix B
B–44
TA I
NSTRUMENTS
TGA 2950
and the constant reaction rate (negative resolu-
tion setting) modes of the Hi-Res
TM
ramp
segment. There is no limit to how many times
the setting can be changed during a method.
Increasing sensitivity setting tends to increase
experiment time.
Understanding
Sensitivity Setting
The TGA 2950 Hi-Res
TM
control algorithms
have been pretuned to respond correctly to most
transition situations with the default sensitivity
setting of 1.0. This means that in most cases it
will not be necessary to adjust sensitivity setting
at all. The key is knowing when and how to
make the adjustment.
It is easy to confuse resolution setting and
sensitivity setting since both values can affect
the resolution of the TGA scan. However, there
is a simple way to think of the difference
between the two parameters.
Resolution setting controls the temperature at
which the transition will occur (
i.e
., how far
from the theoretical isothermal decomposition
temperature) by selecting the reaction rate (%/
minute) at which heating rate is reduced. The
closer the reaction is to the isothermal
decomposition temperature the lower the
reaction rate and the longer the reaction will
take. You will find that you can use the resolu-
tion setting to literally move the measurement of
transitions on the temperature axis. (See Figure
B.13, page B-61.)
Summary of Contents for TGA 2950
Page 20: ...TA INSTRUMENTS TGA 2950 xx ...
Page 22: ...Introducing the TGA 2950 TA INSTRUMENTS TGA 2950 1 2 ...
Page 36: ...TA INSTRUMENTS TGA 2950 Installing the 2950 2 2 ...
Page 90: ...Running Experiments TA INSTRUMENTS TGA 2950 3 24 ...
Page 92: ...Technical Reference TA INSTRUMENTS TGA 2950 4 2 ...
Page 112: ...Technical Reference TA INSTRUMENTS TGA 2950 4 22 ...
Page 136: ...TA INSTRUMENTS TGA 2950 Maintenance and Diagnostics 5 24 ...
Page 142: ...Appendix B B 4 TA INSTRUMENTS TGA 2950 ...
Page 152: ...Appendix B B 14 TA INSTRUMENTS TGA 2950 Figure B 2 Figure B 3 ...
Page 153: ...TA INSTRUMENTS TGA 2950 B 15 Hi ResTM Option Figure B 4 Figure B 5 ...
Page 169: ...TA INSTRUMENTS TGA 2950 B 31 Hi ResTM Option Figure B 7 Figure B 8 ...
Page 188: ...Appendix B B 50 TA INSTRUMENTS TGA 2950 Figure B 11 Sensitivity Setting Too High ...
Page 205: ...TA INSTRUMENTS TGA 2950 B 67 Hi ResTM Option Figure B 16 Figure B 17 ...
Page 211: ...TA INSTRUMENTS TGA 2950 B 73 Hi ResTM Option Figure B 22 Figure B 23 ...
Page 212: ...Appendix B B 74 TA INSTRUMENTS TGA 2950 Figure B 24 Figure B 25 ...
Page 214: ...Appendix B B 76 TA INSTRUMENTS TGA 2950 ...
Page 216: ...Appendix C TA INSTRUMENTS TGA 2950 C 2 ...
Page 218: ...Appendix C TA INSTRUMENTS TGA 2950 C 4 Figure C 1 Auto TGA ...
Page 236: ...Appendix D TA INSTRUMENTS TGA 2950 D 2 ...
Page 258: ...Appendix D TA INSTRUMENTS TGA 2950 D 24 ...
Page 264: ...Index TAINSTRUMENTSTGA2950 I 6 ...