ASTM-E1860 › Historical Revision Information
Standard Test Method for Elapsed Time Calibration Thermal Analyzers
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Scope
1.1 This test method describes the calibration or performance confirmation of the elapsed-time signal from thermal analyzers.
1.2 SI units are the standard.
1.3 There is no ISO standard equivalent to this method.
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.
Significance and Use
Most thermal analysis experiments are carried out under temperature ramp conditions where temperature is the independent parameter. Some experiments, however, are carried out under isothermal temperature conditions where the elapsed time to an event is measured as the independent parameter. Isothermal Kinetics (Test Methods E 2070), Thermal Stability (Test Method E 487
Modern scientific instruments, including thermal analyzers, usually measure elapsed time with excellent precision and accuracy. In such cases, it may only be necessary to confirm the performance of the instrument by comparison to a suitable reference. Only rarely will it may be required to correct the calibration of an instrument’elapsed time signal through the use of a calibration factor.
It is necessary to obtain elapsed time signal conformity only to 0.1 times the repeatability relative standard deviation (standard deviation divided by the mean value) expressed as a percent for the test method in which the thermal analyzer is to be used. For those test methods listed in Section 2 this conformity is 0.1 %.
Keywords
calibration; elapsed time; thermal analysis; time; ICS Number Code 17.200.20 (Temperature-measuring instruments)
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Document Number
ASTM-E1860-07
Revision Level
2007 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
April 1, 2007
Document Type
Test Method
Page Count
3 pages
Committee Number
E37.10