TA Instruments TGA 2050 Bedienungsanleitung
TA I
NSTRUMENTS
TGA 2050
I
TGA 2050
Thermogravimetric Analyzer
Operator’s Manual
PN 925603.001 Rev. D (Text and Binder)
PN 925603.002 Rev. D (Text Only)
Issued July 2000
Thermal Analysis & Rheology
TA I
NSTRUMENTS
TGA 2050
II
©1995, 1996, 1997, 2000
by TA Instruments, Inc.
109 Lukens Drive
New Castle, DE 19720
Notice
The material contained in this manual is be-
lieved adequate for the intended use of this
instrument. If the instrument or procedures are
used for purposes other than those specified
herein, confirmation of their suitability must be
obtained from TA Instruments. Otherwise, TA
Instruments does not guarantee any results and
assumes no obligation or liability. This publica-
tion is not a license to operate under or a
recommendation to infringe upon any process
patents.
TA Instruments Operating Software and Mod-
ule, Data Analysis, and Utility Software and
their associated manuals are proprietary and
copyrighted by TA Instruments, Inc. Purchas-
ers are granted a nonexclusive, nontransferable
license to use these software programs on the
module and controller with which they were
purchased. These programs may not be du-
plicated by the purchaser without the prior
written consent of TA Instruments. Each
licensed program shall remain the exclusive
property of TA Instruments, and no rights or
licenses are granted to the purchaser other than
as specified above.
TA I
NSTRUMENTS
TGA 2050
III
Table of Contents
Notes, Cautions, and Warnings ............... viii
Hotlines ........................................................ ix
Safety............................................................. x
Using This Manual ..................................... xii
CHAPTER 1: Introducing the 2050........ 1-1
Introduction................................................ 1-3
Components ............................................... 1-4
The 2050 Instrument................................... 1-6
Automatic Keypad Functions .............. 1-9
Front Panel lights ................................. 1-9
Accessories .............................................. 1-10
Gas Switching Accessory ................. 1-10
Other Accessories ............................. 1-10
Specifications........................................... 1-11
CHAPTER 2: Installing the 2050 ............ 2-1
Unpacking/Repacking the 2050 .................. 2-3
Unpacking the 2050 ............................. 2-3
Repacking the 2050.............................. 2-6
Installing the Instrument ............................ 2-7
TA I
NSTRUMENTS
TGA 2050
IV
Table of Contents
(continued)
Inspecting the System.......................... 2-8
Choosing a Location ........................... 2-9
Filling the Heat Exchanger................ 2-10
Connecting Cables and Lines............ 2-12
Heat Exchanger Cable
and Water Lines.......................... 2-12
GPIB Cable................................. 2-14
Purge Lines ................................. 2-17
Cooling Gas Line ........................ 2-19
Power Cable................................ 2-20
Unpacking the Balance ............................ 2-21
Installing the Hang-Down Wires....... 2-23
Aligning the Sample
Hang-Down Wire .............................. 2-27
Adjusting the Sample Platform ......... 2-31
Starting the 2050....................................... 2-32
Shutting Down the Instrument.................. 2-33
CHAPTER 3: Running
Experiments............................................... 3-1
Overview.................................................... 3-3
Before You Begin ............................... 3-4
Calibrating the TGA ................................... 3-5
TA I
NSTRUMENTS
TGA 2050
V
Table of Contents
(continued)
Temperature Calibration....................... 3-5
Weight Calibration ................................ 3-6
Running a TGA Experiment ....................... 3-6
Experimental Procedure ....................... 3-6
Preparing the Sample .......................... 3-7
Selecting Sample
and Tare Pans................................ 3-7
Taring the Sample Pan ................... 3-8
Automatic Tare ....................... 3-9
Manual Tare ............................ 3-9
Loading the Sample............................ 3-10
Setting Up an Experiment .................. 3-14
Setting Up Accessories ..................... 3-15
Using a Purge Gas....................... 3-15
Using the Air Cool Option.......... 3-18
Using the Gas Switching
Accessory .................................... 3-18
Starting an Experiment....................... 3-20
Stopping an Experiment ..................... 3-21
Unloading the Sample ................. 3-22
Use in an Oxygen-Free Atmosphere......... 3-23
TA I
NSTRUMENTS
TGA 2050
VI
Table of Contents
(continued)
Purge Gas System............................... 3-23
Instrument Setup ................................ 3-24
CHAPTER 4: Technical Reference......... 4-1
Description of the TGA 2050 .................... 4-3
Components.......................................... 4-5
Balance .......................................... 4-6
Sample Loading Assembly ............ 4-8
Furnace .......................................... 4-9
Cabinet......................................... 4-11
Heat Exchanger............................ 4-13
Theory of Operation ................................. 4-14
Status Codes ............................................ 4-15
CHAPTER 5: Maintenance
and Diagnostics ......................................... 5-1
Overview..................................................... 5-3
Routine Maintenance .................................. 5-4
Inspection ............................................. 5-4
Cleaning the Instrument Keypad.......... 5-4
Cleaning the Quartz
Furnace Tube........................................ 5-4
TA I
NSTRUMENTS
TGA 2050
VII
Table of Contents
(continued)
Heat Exchanger ....................................5-7
Maintaining Heat
Exchanger Coolant ........................5-7
Draining and Refilling the
Water Reservoir .............................5-7
Replacing the Thermocouple ....................5-10
Diagnosing Power Problems.....................5-12
Fuses ...................................................5-12
Power Failures.................................... 5-13
TGA 2050 Test Functions ........................5-14
The Confidence Test ..........................5-14
Replacement Parts .................................... 5-16
Appendix A: Ordering Information ..... A-1
Address List ............................................... A-1
Index............................................................ I-1
TA I
NSTRUMENTS
TGA 2050
VIII
Notes, Cautions,
and Warnings
This manual uses NOTES, CAUTIONS, and
WARNINGS to emphasize important and
critical instructions.
A NOTE highlights important information about
equipment or procedures.
A CAUTION emphasizes a procedure that may
damage equipment or cause loss of data if not
followed correctly.
A WARNING indicates a procedure that
may be hazardous to the operator or to the
environment if not followed correctly.
NOTE:
!
WARNING
t
CAUTION:
TA I
NSTRUMENTS
TGA 2050
IX
Hotlines
To TA Instruments Thermal Analysis
For Technical Assistance ........ (302) 427-4070
To Order Instruments and
Supplies .................................. (302) 427-4040
For Service Inquiries............... (302) 427-4050
General Information................ (302) 427-4000
TA I
NSTRUMENTS
TGA 2050
X
Safety
Electrical Safety
You must unplug the instrument before doing
any maintenance or repair work; voltages
exceeding 110 volts AC are present in this
system.
High voltages are present in this instru-
ment. If you are not trained in electrical
procedures, do not remove the cabinet
covers unless specifically instructed to do
so in the manual. Maintenance and repair
of internal parts must be performed only by
TA Instruments or other qualified service
personnel.
After transport or storage in humid condi-
tions, this equipment could fail to meet all
the safety requirements. Refer to the
NOTE on page 2-10 for the method used to
dry out the equipment before use.
Chemical Safety
Use only the purge gases listed in Table 1.2 in
Chapter 1. Use of other gases could cause
damage to the instrument or injury to the
operator.
Do not use hydrogen or any other explosive
gas in the TGA 2050 furnace.
If you are using samples that may emit
harmful gases, vent the gases by placing
the instrument near an exhaust.
!
WARNING
!
WARNING
!
WARNING
!
WARNING
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