ASTM E 207 Standard Test Method for Thermal EMF Test of Single Thermoelement Materials by Comparison with a Reference Thermoelement of Similar EMF-Temperature Properties

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ASTM E 207 Document Information:

Title
Standard Test Method for Thermal EMF Test of Single Thermoelement Materials by Comparison with a Reference Thermoelement of Similar EMF-Temperature Properties

ASTM International

Publication Date:
May 1, 2008

Scope:

This test method covers a test for determining the thermoelectric emf of a thermoelement versus NIST platinum 67 (Pt-67) by means of measuring the difference between the emf of the test thermoelement and the emf of a reference thermoelement (previously referred to as a secondary standard), which has a known relationship to NIST Pt-67.

This test is applicable to new thermocouple materials over the temperature ranges normally associated with thermocouples and their extension wires. The table on Suggested Upper Temperature Limits for Protected Thermocouples in Specification E 230 lists the ranges associated with the letterdesignated types of thermocouples. ASTM MNL-12² lists the temperature range of extension circuit materials.

This test is not applicable to stability testing or inhomogeneity testing.

The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

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.

² Manual on the Use of Thermocouples in Temperature Measurement, ASTM MNL-12, Fourth Edition, ASTM, April 1993. (Revision of STP 407B).

Keywords:

calibration

emf

ice point

junction

Pt-67

reference temperature

Seebeck coefficient

temperature

thermoelectric emf

thermoelement

thermocouple

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