ASTM E2206-02
(Test Method)Standard Method for Force Calibration Of Thermomechnical Analyzers
Standard Method for Force Calibration Of Thermomechnical Analyzers
SCOPE
1.1 This method describes the calibration or performance confirmation of the electronically applied force signal for thermomechanical analyzers over the range of 0 to 1 N.
1.2 SI units are the standard.
1.3 There is no ISO method equivalent to this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:E2206–02
Standard Method for
Force Calibration Of Thermomechnical Analyzers
This standard is issued under the fixed designation E2206; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope be in conformance if the performance is within established
limits, typically 1%. Alternatively, the force signal may be
1.1 This method describes the calibration or performance
calibrated using a two-point calibration method.
confirmation of the electronically applied force signal for
thermomechanical analyzers over the range of 0 to 1 N.
5. Significance and Use
1.2 SI units are the standard.
5.1 Most thermomechanical analysis experiments are car-
1.3 There is no ISO method equivalent to this standard.
ried out with some force applied to the test specimen. This
1.4 This standard does not purport to address all of the
force is often created electronically. It may be constant or
safety concerns, if any, associated with its use. It is the
changed during the experiment.
responsibility of the user of this standard to establish appro-
5.2 Thismethoddemonstratesconformanceorcalibratesthe
priate safety and health practices and determine the applica-
electronically applied force signal.
bility of regulatory limitations prior to use.
5.3 Thismethodmaybeusedforresearchanddevelopment,
2. Referenced Documents quality control, manufacturing or regulatory applications.
5.4 Other thermomechanical analyzer calibration functions
2.1 ASTM Standards:
include temperature byTest Method E1363 and length change
E4 Practice for Load Verification of Testing Machines
by Test Method E2113.
E473 Terminology Relating to Thermal Analysis
E617 Specification for Laboratory Weights and Precision
6. Apparatus
Mass Standards
6.1 Thermomechanical Analyzer—The essential instrumen-
E831 Test Method for Linear Thermal Expansion of Solid
3 tationrequiredtoprovideaminimumthermomechanicalanaly-
Materials by Thermomechanical Analysis
sis or thermodilatometric capability for this method includes:
E1142 Terminology Relating to Thermophysical Proper-
3 6.1.1 Rigid Specimen Holder, inert, low expansivity mate-
ties
rial [typically < 0.6 µm/(m · K)] to center the specimen in the
E1363 Test Method for Temperature Calibration of Ther-
3 furnace and to fix the specimen to mechanical ground.
momechanical Analyzers
E2113 Test Method for Length Change Calibration of
NOTE 1—Materials of construction with greater expansivity may be
Thermomechanical Analyzers used but shall be reported.
6.1.2 Rigid (Expansion or Compression) Probe, inert, low
3. Terminology
expansivity material [typically < 0.6 µm/(m·K)] which con-
3.1 The technical terms used in this standard are defined in
tactsthespecimenwithanappliedcompressiveforce(seeNote
Terminologies E473 and E1142.
1).
6.1.3 Sensing Element, linear over a minimum range of
4. Summary of Test Method
2mmtomeasurethedisplacementoftherigidprobeto 61µm
4.1 The electronic force signal generated by a thermome-
resulting from changes in length of the specimen.
chanical analyzer is compared to that exerted by gravity on a
6.1.4 Programmable Force Transducer, to generate a con-
known mass. The thermomechanical analyzer may be said to
stant force (6 1.0%) of up to 1.0 N that is applied through the
rigid probe to the specimen.
This method is under the jurisdiction of ASTM Committee E37 on Thermal
NOTE 2—Other force ranges may be used but shall be reported.
Measurements and is the direct responsibility of Subcommittee E37.01 on Thermal
6.1.5 Furnace, capable of providing uniform controlled
Analysis Test Methods.
Current edition approved May 10, 2002. Published August 2002.
heating (cooling) of the specimen to a constant temperature or
Annual Book of ASTM Standards, Vol 03.01.
at a constant rate within the temperature range of −100 to
Annual Book of ASTM Standards, Vol 14.02.
600°C.
Annual Book of ASTM Standards, Vol 14.04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
E2206–02
NOTE 3—Other temperature ranges may be used but shall be reported.
force transducer so that no force is applied by the probe to the
specimen holder. Record this force as F in mN.
6.1.6 Temperature Controller, capable of executing a spe- 2
cific temperature program by operating the furnace between
NOTE 7—Other masses may be used but shall be reported.
selected temperature limits at a rate of change of up to
8.3 Calculate the force calibration constant (S) and confor-
10°C/min constant to 0.1°C/min or at an isothermal tempera-
mity (C) using the equations of Section 9.
ture constant to 6 0.5°C.
9. Calculations
NOTE 4—Other heating rates may be used but shall be reported.
9.1 For the purpose of this method, it is assumed that the
6.1.7 TemperatureSensor,thatcanbeattachedto,incontact
relationship between observed force (F ) and the actual force
with, or reproducibly positioned in close proximity to the 2
(F ) is linear and is governed by Eq 1:
specimentoprovideanindicationofthespecimentemperature
to 6 0.1°C. F 5 F · S (1)
1 2
6.1.8 A means of sustaining an environment around the
where:
specimen of inert purge gas with a purge gas rate of 10 to 100
S = force calibration constant (nominal value of 1.00000).
6 5 mL/min.
9.2 Calculate the force exerted by the standard mass in air
NOTE 5—Typically, 99.9+% pure nitrogen, argon, or heliu
...
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