ASTM E2181/E2181M-19
(Specification)Standard Specification for Compacted Mineral-Insulated, Metal-Sheathed, Noble Metal Thermocouples and Thermocouple Cable
Standard Specification for Compacted Mineral-Insulated, Metal-Sheathed, Noble Metal Thermocouples and Thermocouple Cable
ABSTRACT
This specification establishes the requirements for materials and manufacturing, dimensions, inspection and testing, and processing of compacted, mineral-insulated, metal-sheathed Type S (platinum-10 % rhodium versus platinum), Type R (platinum-13 % rhodium versus platinum), and Type B (platinum-30 % rhodium versus platinum-6 % rhodium) noble metal thermocouples, and thermocouple cables with at least one noble metal thermoelement pair. This specification describes both the required processing and testing requirements, and also the optional supplementary testing and quality assurance requirements. Additionally, provisions are made herein for selecting the type of noble metal thermocouple or thermoelements, either magnesia (MgO) or alumina (Al2O3) insulation, and a noble metal alloy or other alternate heat-resistant sheath material. Provisions are also made for selecting a thermocouple measuring junction style and for a transition or termination.
SCOPE
1.1 This specification establishes dimensional and material requirements for compacted, mineral-insulated, metal-sheathed (MIMS), Type S (platinum-10 % rhodium versus platinum), Type R (platinum-13 % rhodium versus platinum), and Type B (platinum-30 % rhodium versus platinum-6 % rhodium) noble metal thermocouples. This specification also establishes dimensional recommendations and material requirements for compacted MIMS cable with at least one noble metal thermoelement pair.
1.2 This specification describes both the required processing and testing requirements and also the optional supplementary testing and quality assurance requirements.
1.3 Provisions are made for selecting the type of noble metal thermocouple or thermoelements, either magnesia (MgO) or alumina (Al2O3) insulation, and a noble metal alloy or another heat-resistant sheath material. Provisions are also made for selecting a thermocouple-measuring junction style and for a transition or termination.
1.4 The values stated in inch-pound units or SI (metric) units may be regarded separately as standard. The values stated in each system are not the exact equivalents, and each system shall be used independently of the other.
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E2181/E2181M −19 An American National Standard
Standard Specification for
Compacted Mineral-Insulated, Metal-Sheathed, Noble Metal
1
Thermocouples and Thermocouple Cable
ThisstandardisissuedunderthefixeddesignationE2181/E2181M;thenumberimmediatelyfollowingthedesignationindicatestheyear
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2.1 The following documents of the latest issue form a part
1.1 This specification establishes dimensional and material
requirementsforcompacted,mineral-insulated,metal-sheathed of this specification to the extent specified herein. In the event
of a conflict between this specification and other specifications
(MIMS), Type S (platinum-10% rhodium versus platinum),
Type R (platinum-13% rhodium versus platinum), andType B referenced herein, this specification shall take precedence.
(platinum-30% rhodium versus platinum-6% rhodium) noble 2
2.2 ASTM Standards:
metal thermocouples. This specification also establishes di-
A213/A213MSpecification for Seamless Ferritic and Aus-
mensional recommendations and material requirements for
tenitic Alloy-Steel Boiler, Superheater, and Heat-
compacted MIMS cable with at least one noble metal thermo-
Exchanger Tubes
element pair.
A249/A249MSpecification for Welded Austenitic Steel
1.2 Thisspecificationdescribesboththerequiredprocessing Boiler, Superheater, Heat-Exchanger, and Condenser
and testing requirements and also the optional supplementary Tubes
A269/A269MSpecification for Seamless and Welded Aus-
testing and quality assurance requirements.
tenitic Stainless Steel Tubing for General Service
1.3 Provisions are made for selecting the type of noble
A632Specification for Seamless and Welded Austenitic
metal thermocouple or thermoelements, either magnesia
Stainless Steel Tubing (Small-Diameter) for General Ser-
(MgO) or alumina (Al O ) insulation, and a noble metal alloy
2 3
vice
or another heat-resistant sheath material. Provisions are also
B163Specification for Seamless Nickel and Nickel Alloy
made for selecting a thermocouple-measuring junction style
Condenser and Heat-Exchanger Tubes
and for a transition or termination.
B167Specification for Nickel-Chromium-AluminumAlloys
1.4 The values stated in inch-pound units or SI (metric)
(UNS N06699), Nickel-Chromium-Iron Alloys (UNS
unitsmayberegardedseparatelyasstandard.Thevaluesstated
N06600, N06601, N06603, N06690, N06693, N06025,
in each system are not the exact equivalents, and each system
N06045, and N06696), Nickel-Chromium-Cobalt-
shall be used independently of the other.
Molybdenum Alloy (UNS N06617), Nickel-Iron-
1.5 This standard does not purport to address all of the Chromium-Tungsten Alloy (UNS N06674), and
safety concerns, if any, associated with its use. It is the B516 Specification for Welded Nickel-Chromium-
responsibility of the user of this standard to establish appro- Aluminum Alloy (UNS N06699) and Nickel-Chromium-
priate safety, health, and environmental practices and deter- Iron Alloy (UNS N06600, UNS N06601, UNS N06603,
mine the applicability of regulatory limitations prior to use. UNS N06025, UNS N06045, UNS N06690, and UNS
1.6 This international standard was developed in accor- N06693) Tubes
E165/E165MPractice for Liquid Penetrant Testing for Gen-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the eral Industry
Development of International Standards, Guides and Recom- E220Test Method for Calibration of Thermocouples By
Comparison Techniques
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee. E230/E230MSpecification for Temperature-Electromotive
Force (emf) Tables for Standardized Thermocouples
E344Terminology Relating to Thermometry and Hydrom-
etry
1
This specification is under the jurisdiction of ASTM Committee E20 on
Temperature Measurement and is the direct responsibility of Subcommittee E20.12
2
on Thermocouples - Specifications. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Sept. 1, 2019. Published October 2019. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 2001. Last previous edition approved in 2011 as E2181/E2181M–11. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/E2181_E2181M-19. theASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2181/E2181M − 11 E2181/E2181M − 19
Standard Specification for
Compacted Mineral-Insulated, Metal-Sheathed, Noble Metal
1
Thermocouples and Thermocouple Cable
This standard is issued under the fixed designation E2181/E2181M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification establishes dimensional and material requirements for compacted, mineral-insulated, metal-sheathed
(MIMS), Type S (platinum-10 % rhodium versus platinum), Type R (platinum-13 % rhodium versus platinum), and Type B
(platinum-30 % rhodium versus platinum-6 % rhodium) noble metal thermocouples. This specification also establishes dimen-
sional recommendations and material requirements for compacted MIMS cable with at least one noble metal thermoelement pair.
1.2 This specification describes both the required processing and testing requirements and also the optional supplementary
testing and quality assurance requirements.
1.3 Provisions are made for selecting the type of noble metal thermocouple or thermoelements, either magnesia (MgO) or
alumina (Al O ) insulation, and a noble metal alloy or other alternate another heat-resistant sheath material. Provisions are also
2 3
made for selecting a thermocouple measuring thermocouple-measuring junction style and for a transition or termination.
1.4 The values stated in inch-pound units or SI (metric) units may be regarded separately as standard. The values stated in each
system are not the exact equivalents, and each system shall be used independently of the other.
1.5 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory requirementslimitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 The following documents of the latest issue form a part of this specification to the extent specified herein. In the event of
a conflict between this specification and other specifications referenced herein, this specification shall take precedence.
2
2.2 ASTM Standards:
A213/A213M Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
A249/A249M Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
A269A269/A269M Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service
A632 Specification for Seamless and Welded Austenitic Stainless Steel Tubing (Small-Diameter) for General Service
B163 Specification for Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes
B167 Specification for Nickel-Chromium-Aluminum Alloys (UNS N06699), Nickel-Chromium-Iron Alloys (UNS N06600,
N06601, N06603, N06690, N06693, N06025, N06045, and N06696), Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS
N06617), Nickel-Iron-Chromium-Tungsten Alloy (UNS N06674), and
B516 Specification for Welded Nickel-Chromium-Aluminum Alloy (UNS N06699) and Nickel-Chromium-Iron Alloy (UNS
N06600, UNS N06601, UNS N06603, UNS N06025, UNS N06045, UNS N06690, and UNS N06693) Tubes
E165E165/E165M Practice for Liquid Penetrant Testing for General Industry
E220 Test Method for Calibration of Thermocouples By Comparison Techniques
1
This specification is under the jurisdiction of ASTM Committee E20 on Temperature Measurement and is the direct responsibility of Subcommittee E20.12 on
Thermocouples - Specifications.
Current edition approved Nov. 1, 2011Sept. 1, 2019. Published December 2011October 2019. Originally approved in 2001. Last previous edition approved in 20062011
as E2181/E2181M – 06E2181/E2181M – 11.E01. DOI: 10.1520/E2181_E2181M-11.10.1520/E2181_E2181M-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Sum
...
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