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ASTM E601-81(1997)

Historical Revision

Standard Guide for Measuring Electromotive Force (EMF) Stability of Base-Metal Thermoelement Materials With Time in Air

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1.1 This test method provides comparison of emf stability of single-element base-metal thermocouple materials in air referenced to platinum at specified constant elevated temperatures.

1.2 Since the useful life of a thermocouple depends on the stability of the emf generated at given temperatures for a required time period, the method includes emf drift measurements with time. The emf is measured against platinum, which may be the platinum leg of the platinum-rhodium/platinum reference thermocouple used to indicate the temperature at the time of taking the emf readings, or an additional platinum reference.

1.3 The total life is included as added information, if required.

Note 1-Some thermoelements may show insignificant emf drift while undergoing relatively rapid oxidation. In these cases, failure of the thermoelement may be indicated only by open circuit.

Note 2-See ASTM STP 470B for recommended upper temperature limits in air.

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.


SDO ASTM: ASTM International
Document Number E601
Publication Date Jan. 1, 1997
Language en - English
Page Count 4
Revision Level 81(1997)
Supercedes
Committee E20.04
Publish Date Document Id Type View
Nov. 1, 2020 E0601-20 Revision
May 1, 2015 E0601-15 Revision
Nov. 1, 2007 E0601-07A Revision
May 1, 2007 E0601-07E01 Revision
May 1, 2007 E0601-07 Revision
Jan. 1, 1997 E0601-81R97 Revision
May 1, 2013 E0601-07AR13 Reaffirmation