ASTM E230, Standard Specification and Temperature-Electromotive Force (emf) Tables for Standardized Thermocouples, has been editorially corrected

ASTM E230/E230M, “Standard Specification and Temperature-Electromotive Force (emf) Tables for Standardized Thermocouples,” was released as the 2011(e1) Edition in October.  This is an editorial correction of ASTM E230/E230M-11 from August of this year.  Table 46 was editorially corrected, which means that there is a change to the table that does not affect the technical content.

Originally this standard was numbered ASTM E230, but in 2011 the document was redesignated as ASTM E230/E230M.  This means it now has both metric and feet and inches measurements included in the standard.

This specification contains reference tables that give temperature-electromotive force (emf) relationships for types B, E, J, K, N, R, S, T, and C thermocouples. These are the thermocouple types most commonly used in industry.

Thermocouples and matched thermocouple wire pairs are normally supplied to the tolerances on initial values of emf versus temperature. Color codes for insulation on thermocouple grade materials, along with corresponding thermocouple and thermoelement letter designations are given.

Four types of tables are presented: general tables, EMF versus temperature tables for thermocouples, EMF versus temperature tables for thermoelements, and supplementary tables.

This specification is intended to define the thermoelectric properties of materials that conform to the relationships presented in it’s tables and that bear the letter designations contained in the document.

Topics such as ordering information, physical and mechanical properties, workmanship, testing, and marking are not addressed. The user is referred to specific standards such as ASTM E235E574E585/E585ME608/E608ME1159, or E2181/E2181M for guidance in these areas.

This ASTM specification and all current ASTM documents are available from Document Center Inc. either via our website, www.document-center.com, or by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  Many obsolete editions are available as well.