Appendix D
TA I
NSTRUMENTS
TGA 2950
D–4
The following description of the EGA furnace may
also be found in Chapter 4 of this manual.
The EGA furnace consists of a quartz glass
sample tube surrounded by an electric resistance
heater, both of which are contained within a
water-cooled furnace housing. The housing is
mounted to a furnace base that raises and
lowers the furnace for sample loading and
unloading.
The sample tube has a purge gas inlet that
passes through the right side of the furnace
housing. A fitting on the left side of the housing
allows connection of a transfer line to carry
exhaust gas to a spectrometer such as a mass
spectrometer. Because the heater is external to
the sample tube, evolved gases from sample
decomposition within the sample tube do not
come in contact with the resistance elements or
the furnace ceramic refractory.
Cooling air enters through the furnace base and
passes upward between the outside of the
sample tube and the inside of the furnace,
completely separating the cooling air from the
sample and the sample zone.
The furnace is a resistance heater wound on
alumina ceramic, which allows sample zone
temperatures as high as 1000°C with heating
rates up to 50°C/min.
A Platinel II* thermocouple is positioned in the
furnace, just above the sample pan, where it
monitors the sample environment temperature.
*Platinel II is a registered trademark of Engelhard
Industries.
NOTE:
Содержание TGA 2950
Страница 20: ...TA INSTRUMENTS TGA 2950 xx ...
Страница 22: ...Introducing the TGA 2950 TA INSTRUMENTS TGA 2950 1 2 ...
Страница 36: ...TA INSTRUMENTS TGA 2950 Installing the 2950 2 2 ...
Страница 90: ...Running Experiments TA INSTRUMENTS TGA 2950 3 24 ...
Страница 92: ...Technical Reference TA INSTRUMENTS TGA 2950 4 2 ...
Страница 112: ...Technical Reference TA INSTRUMENTS TGA 2950 4 22 ...
Страница 136: ...TA INSTRUMENTS TGA 2950 Maintenance and Diagnostics 5 24 ...
Страница 142: ...Appendix B B 4 TA INSTRUMENTS TGA 2950 ...
Страница 152: ...Appendix B B 14 TA INSTRUMENTS TGA 2950 Figure B 2 Figure B 3 ...
Страница 153: ...TA INSTRUMENTS TGA 2950 B 15 Hi ResTM Option Figure B 4 Figure B 5 ...
Страница 169: ...TA INSTRUMENTS TGA 2950 B 31 Hi ResTM Option Figure B 7 Figure B 8 ...
Страница 188: ...Appendix B B 50 TA INSTRUMENTS TGA 2950 Figure B 11 Sensitivity Setting Too High ...
Страница 205: ...TA INSTRUMENTS TGA 2950 B 67 Hi ResTM Option Figure B 16 Figure B 17 ...
Страница 211: ...TA INSTRUMENTS TGA 2950 B 73 Hi ResTM Option Figure B 22 Figure B 23 ...
Страница 212: ...Appendix B B 74 TA INSTRUMENTS TGA 2950 Figure B 24 Figure B 25 ...
Страница 214: ...Appendix B B 76 TA INSTRUMENTS TGA 2950 ...
Страница 216: ...Appendix C TA INSTRUMENTS TGA 2950 C 2 ...
Страница 218: ...Appendix C TA INSTRUMENTS TGA 2950 C 4 Figure C 1 Auto TGA ...
Страница 236: ...Appendix D TA INSTRUMENTS TGA 2950 D 2 ...
Страница 258: ...Appendix D TA INSTRUMENTS TGA 2950 D 24 ...
Страница 264: ...Index TAINSTRUMENTSTGA2950 I 6 ...