ASTM E1159-98

Standard Specification for Thermocouple Materials, Platinum-Rhodium Alloys, and Platinum

SCOPE
1.1 This specification covers non-insulated platinum-rhodium alloys (weight percent composition), and platinum thermocouple wires that meet the requirement of Specification E 230 and NBS Monograph 175.  
1.2 This specification does not cover platinum and platinum rhodium materials, which require a higher purity than specified in 5.1, such as used for temperature coefficient of resistance (TCR) measurements or standards type calibration. For requirements of this superior quality, it is suggested that suppliers of precious metals be contacted.

General Information

• Status: Historical
• Publication Date: 09-Apr-1998
• ICS: 17.200.20 - Temperature-measuring instruments
• ICS: 77.120.99 - Other non-ferrous metals and their alloys
• Technical Committee: E20 - Temperature Measurement

Relations

• Replaced By: ASTM E1159-98(2003) - Standard Specification for Thermocouple Materials, Platinum-Rhodium Alloys, and Platinum
• Effective Date: 01-Nov-2003

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: E 1159 – 98
Standard Specification for
Thermocouple Materials, Platinum-Rhodium Alloys, and
1
Platinum
This standard is issued under the fixed designation E 1159; 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 (ε) indicates an editorial change since the last revision or reapproval.
1. Scope E 230 Specification and Temperature-Electromotive Force
4
(EMF) Tables for Standardized Thermocouples
1.1 This specification covers non-insulated platinum-
E 344 Terminology Relating to Thermometry and Hydrom-
rhodium alloys (weight percent composition), and platinum
4
etry
thermoelements that meet the requirement of Specification
2
E 230 and NIST Monograph 175 .
3. Terminology
1.2 This specification does not cover platinum and
3.1 Definitions—The definitions given in Terminology
platinum-rhodium materials, that require a higher purity than
E 344 apply to terms used in this specification.
specified in 5.1, such as used for temperature coefficient of
3.2 Definitions of Terms Specific to This Standard:
resistance (TCR) measurements or standards type calibration.
3.2.1 thermocouple type, n—a nominal thermoelectric class
For requirements of this superior quality, it is suggested that
of thermoelement materials that, used as a pair, have a
suppliers of precious metals be contacted.
standardized relationship and tolerance between relative See-
1.3 This standard does not purport to address all of the
beck EMF and temperature, physical characteristics, and an
safety concerns, if any, associated with its use. It is the
assigned type letter designator and color code.
responsibility of the user of this standard to establish appro-
3.2.1.1 Discussion—Letter designators and color codes are
priate safety and health practices and determine the applica-
defined in the United States by ANSI/ASTM E 230. Descrip-
bility of regulatory limitations prior to use.
tions of letter designators and color codes may also be found in
5
2. Referenced Documents ASTM MNL-12 .
2.1 The following documents of the issue in force on the
4. Ordering Information
date of material purchase form a part of this specification to the
4.1 Orders for material under this specification shall include
extent referenced herein.
the following:
2.2 ASTM Standards:
4.1.1 ASTM designation and date of issue,
3
B 561 Specification for Refined Platinum
4.1.2 Thermocouple type (3.2.1.1),
3
B 616 Specification for Refined Rhodium
4.1.3 Thermoelement diameter and tolerance (5.5),
E 207 Test Method of Thermal EMF Test of Single Ther-
4.1.4 Annealing requirements (5.4),
moelement Materials by Comparison With a Reference
4.1.5 Quantity required (5.6, 5.7),
4
Thermoelement of Similar EMF-Temperature Properties
4.1.6 Specify standard or special tolerance on the initial
E 220 Test Method for Calibration of Thermocouples by
value of EMF vs. temperature,
4
Comparison Techniques
4.1.7 Calibration requirement (5.8),
4.1.8 Chemical analysis (7.2.1),
4.1.9 Certified test results (7.2.2), and
1
This specification is under the jurisdiction of ASTM Committee E-20 on 4.1.10 Statement of compliance (7.2.3).
Temperature Measurement and is the direct responsibility of Subcommittee E20.04
on Thermocouples. 5. Requirements
Current edition approved April 10, 1998. Published March 1999. Originally
5.1 Purity—The purity of platinum for use in the negative
ε1
published as E 1159 – 87. Last previous edition E 1159 – 87 (1996) .
2
thermoelement of Type R and Type S thermocouples shall be
“Temperature-Electromotive Force Reference Functions and Tables for the
Letter-Designated Thermocouple Types Based on the ITS-90,” NIST Monograph
Grade 99.99, as specified in Specification B 561.
175 and Supplement 1. Available from NIST, U.S. Dept. of Commerce, Gaithers-
burg, MD 20899.
3 5
Annual Book of ASTM Standards, Vol 2.04. Manual on the Use of Thermocouples in Temperature Measurement, ASTM
4
Annual Book of ASTM Standards, Vol 14.03. MNL-12, Fourth Edition, ASTM, April 1993. (Revision of STP 470B).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E 1159
5.1.1 The purity of platinum, before alloying, for use in the value of EMF vs. temperature as specified in the tolerance
positive thermoelement ofType R, S, and both thermoelements requirement of the ordering information given in Section 4 and
of Type B shall be Grade 99.99, as specified in Specification listed in Table 1 of Specification E 230.
B 561. 5.8.1 Sample Length—The lengths of thermoelements to be
5.1.2 The purity of rhodium, before alloying, for use in the tested shall be approximately1m(3 ft.) taken from e
...