ASTM-E574 › Historical Revision Information
Standard Specification for Duplex, Base Metal Thermocouple Wire With Glass Fiber or Silica Fiber Insulation
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This specification sets forth the requirements for duplex, types E, J, K, N and T thermocouple wire, insulated with E-glass, S-glass, amorphous silica fiber or polycrystalline fiber. This specification presents the requirements for impregnated and non-impregnated fiber insulated thermocouple wire for normally accepted industrial use. The material shall be classified as follows: Class A-Duplex; Class B-Duplex; Class C-Duplex; Class D-Duplex; Class E-Duplex; and Class F-Duplex. Thermoelements shall be solid thermocouple grade materials with a smooth, bright finish and shall be fully annealed prior to insulating. Individual thermoelements shall be covered with a braid, or double wrap (one wrap in each direction) of glass fibers, a braid of glass fibers, or braid of fibers.
Scope
1.1 This specification sets forth the requirements for duplex, types E, J, K, N and T thermocouple wire, insulated with E-glass, S-glass, amorphous silica fiber or polycrystalline fiber.
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.3 This standard does not purport to address all of the safety problems, 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
4.1 This specification presents the requirements for impregnated and non-impregnated fiber insulated thermocouple wire for normally accepted industrial use, but does not attempt to define such usage.
4.2 A supplement contains the requirements for insulated thermocouple wire that will be exposed to high humidity. The purchase order or inquiry shall specify if this supplement is required.
Keywords
amorphous silica fiber insulated wire; duplex insulated thermocouple wire; glass fiber insulated wire; glass insulated thermocouple wire; insulated thermocouple wire; polycrystalline fiber insulated wire; thermocouple wire; ICS Number Code 17.200.20 (Temperature-measuring instruments)
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14.03 (Temperature Measurement)
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Document Number
ASTM-E574-13
Revision Level
2013 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
July 1, 2013
Document Type
Specification
Page Count
4 pages
Committee Number
E20.12