ASTM E1684/E1684M-19
(Specification)Standard Specification for Miniature Thermocouple Connectors
Standard Specification for Miniature Thermocouple Connectors
ABSTRACT
This specification covers separable single-circuit miniature thermocouple connectors with two flat pins. Connectors covered by this specification must be rated for continuous use to at least 300 °F (150 °C), but they may optionally be rated higher. This specification does not cover multiple-circuit connectors, multi-pin connectors, standard size connectors, connectors intended primarily for panel mounting, or high-temperature connectors (for example, those designed for continuous use at temperatures significantly above approximately 500 °F (260 °C)). The connectors shall be rated based on their performance during contact resistance, thermal gradient, and insulation resistance tests.
SCOPE
1.1 This specification covers separable single-circuit miniature thermocouple connectors with two flat pins. Connectors covered by this specification must be rated for continuous use to at least 300 °F (150 °C), but they may optionally be rated to a higher temperature.
1.2 This specification does not cover multiple-circuit connectors, multi-pin connectors, standard size connectors, or connectors intended primarily for panel mounting. High-temperature connectors (for example, those designed for continuous use at temperatures significantly above approximately 500 °F [260 °C]) are not intended to be covered by this specification.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in brackets are not conversions to the values they succeed and therefore shall be used independently of the preceding values. The values given in parentheses are conversions of the values they succeed. Combining values from the two systems may result in non-conformance with the standard.
1.4 The plug and jack may be ordered separately but many of the connector characteristics (see Table 1) are qualified as a mated pair. The requirements in this standard are applicable for the connector pair supplied by the same manufacturer.
1.5 The following precautionary statement pertains only to the Test Methods portion, Section 9, of this specification: 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: E1684/E1684M −19 An American National Standard
Standard Specification for
1
Miniature Thermocouple Connectors
ThisstandardisissuedunderthefixeddesignationE1684/E1684M;thenumberimmediatelyfollowingthedesignationindicatestheyear
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 mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This specification covers separable single-circuit minia-
ture thermocouple connectors with two flat pins. Connectors
2. Referenced Documents
covered by this specification must be rated for continuous use
2.1 The following documents of the latest issue form a part
to at least 300 °F (150 °C), but they may optionally be rated to
of this specification to the extent referenced herein. In case of
a higher temperature.
conflict between this specification and another referenced
1.2 This specification does not cover multiple-circuit
document, this specification shall take precedence.
connectors, multi-pin connectors, standard size connectors, or
2
2.2 ASTM Standards:
connectors intended primarily for panel mounting. High-
E230/E230M Specification for Temperature-Electromotive
temperature connectors (for example, those designed for con-
Force (emf) Tables for Standardized Thermocouples
tinuous use at temperatures significantly above approximately
E344 Terminology Relating to Thermometry and Hydrom-
500 °F [260 °C]) are not intended to be covered by this
etry
specification.
E608/E608M Specification for Mineral-Insulated, Metal-
1.3 The values stated in either SI units or inch-pound units
Sheathed Base Metal Thermocouples
are to be regarded separately as standard. The values stated in
E220 Test Method for Calibration of Thermocouples By
brackets are not conversions to the values they succeed and
Comparison Techniques
therefore shall be used independently of the preceding values.
E2820 Test Method for Evaluating Thermal EMF Properties
The values given in parentheses are conversions of the values
of Base-Metal Thermocouple Connectors
they succeed. Combining values from the two systems may
result in non-conformance with the standard.
3. Terminology
1.4 The plug and jack may be ordered separately but many
3.1 Definitions—The definitions given inTerminology E344
of the connector characteristics (see Table 1) are qualified as a
shall apply.
mated pair.The requirements in this standard are applicable for
3.2 Definitions of Terms Specific to This Standard:
the connector pair supplied by the same manufacturer.
3.2.1 connector pair, n—assembly consisting of a plug and
1.5 The following precautionary statement pertains only to
a jack, each having both positive and negative inserts, that will
the Test Methods portion, Section 9, of this specification: This
connect two parts of an electrical circuit and provide a means
standard does not purport to address all of the safety concerns,
of physically disconnecting the two parts without the use of a
if any, associated with its use. It is the responsibility of the user
tool.
of this standard to establish appropriate safety, health, and
3.2.2 contact insert, n—a metallic conductor assemblies
environmental practices and determine the applicability of
that, when installed in connector bodies, provides connections
regulatory limitations prior to use.
between two parts of an electrical circuit. Plug connectors will
1.6 This international standard was developed in accor-
contain projecting prong contacts, while jack connectors will
dance with internationally recognized principles on standard-
contain recessed socket or receptacle contacts.
ization established in the Decision on Principles for the
3.2.3 service life, n—period of time over which a connector
Development of International Standards, Guides and Recom-
assembly can be put to use and retain all physical and
thermoelectric properties.
1
This specification is under the jurisdiction of ASTM Committee E20 on
Temperature Measurement and is the direct responsibility of Subcommittee E20.13
2
on Thermocouples - Materials and Accessories Specifications. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Nov. 1, 2019. Published November 2019. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1995. Last previous edition approved in 2015 as E1684/E1684M – 15. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/E1684-19. the ASTM website.
Copyright ©
...
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: E1684/E1684M − 15 E1684/E1684M − 19
Standard Specification for
1
Miniature Thermocouple Connectors
This standard is issued under the fixed designation E1684/E1684M; 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 covers separable single-circuit miniature thermocouple connectors with two flat pins. Connectors covered
by this specification must be rated for continuous use to at least 300°F (150°C),300 °F (150 °C), but they may optionally be rated
to a higher temperature.
1.2 This specification does not cover multiple-circuit connectors, multi-pin connectors, standard size connectors, or connectors
intended primarily for panel mounting. High-temperature connectors (for example, those designed for continuous use at
temperatures significantly above approximately 500°F [260°C])500 °F [260 °C]) are not intended to be covered by this
specification.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in
brackets are not conversions to the values they succeed and therefore shall be used independently of the preceding values. The
values given in parentheses are conversions of the values they succeed. Combining values from the two systems may result in
non-conformance with the standard.
1.4 The plug and jack may be ordered separately but many of the connector characteristics (see Table 1) are qualified as a mated
pair. The requirements in this standard are applicable for the connector pair supplied by the same manufacturer.
1.5 The following precautionary statement pertains only to the Test Methods portion, Section 9, of this specification: 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 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.
2. Referenced Documents
2.1 The following documents of the latest issue form a part of this specification to the extent referenced herein. In case of
conflict between this specification and another referenced document, this specification shall take precedence.
2
2.2 ASTM Standards:
E230/E230M Specification for Temperature-Electromotive Force (emf) Tables for Standardized Thermocouples
E344 Terminology Relating to Thermometry and Hydrometry
E608/E608M Specification for Mineral-Insulated, Metal-Sheathed Base Metal Thermocouples
E220 Test Method for Calibration of Thermocouples By Comparison Techniques
E2820 Test Method for Evaluating Thermal EMF Properties of Base-Metal Thermocouple Connectors
3. Terminology
3.1 Definitions—The definitions given in Terminology E344 shall apply.
3.2 Definitions of Terms Specific to This Standard:
1
This specification is under the jurisdiction of ASTM Committee E20 on Temperature Measurement and is the direct responsibility of Subcommittee E20.13 on
Thermocouples - Materials and Accessories Specifications.
Current edition approved Dec. 1, 2015Nov. 1, 2019. Published January 2016November 2019. Originally approved in 1995. Last previous edition approved in 20102015
as E1684 – 10.E1684/E1684M – 15. DOI: 10.1520/E1684-15.10.1520/E1684-19.
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 Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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E1684/E1684M − 19
TABLE 1 Ratings
Characteristic Min Max Requirement Test Procedure
Operating temperature 0°F [-18°C] 300°F [150°C] 7.1.2 9.7
Operating temperature 0 °F [-18 °C] 300 °F [150 °C] 7.1.2 9.7
Contact resistance (each leg) . 0.04 Ω 7.2.6 9.2
7
Insulation resistance at room temperature 10 Ω . 7.3.4
...
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