ASTM E1137/E1137M-08
(Specification)Standard Specification for Industrial Platinum Resistance Thermometers
Standard Specification for Industrial Platinum Resistance Thermometers
ABSTRACT
This specification establishes the physical, performance, and testing requirements, as well as resistance-temperature relationship and tolerances for metal-sheathed industrial platinum resistance thermometers (PRT) suitable for direct immersion temperature measurement. All materials including the sheath materials, sensing elements, insulation, connecting wire end closure materials, epoxy materials, and connecting wires shall be in accordance with specified requirements. The PRT shall be subjected to corresponding qualification tests to demonstrate conformance to the acceptance criteria of the following properties: insulation resistance; resistance versus temperature; minimum immersion length; pressure; thermal response time; vibration; self-heating; stability; thermoelectric effect; mechanical shock; and dimensions.
SIGNIFICANCE AND USE
This specification is written to provide common terminology, resistance versus temperature characteristics, accuracy classification, and inspection requirements for a specified configuration of a typical industrial platinum resistance thermometer (PRT).
This specification may be used as part of the documentation to support negotiations for the purchase and discussion of such thermometers.
SCOPE
1.1 This specification covers the requirements for metal-sheathed industrial platinum resistance thermometers (PRT's) suitable for direct immersion temperature measurement. It applies to PRT's with an average temperature coefficient of resistance between 0 and 100 °C of 0.385 %/°C and nominal resistance at 0 °C of 100 Ω or other specified value. This specification covers PRT's suitable for all or part of the temperature range −200 to 650 °C. The resistance-temperature relationship and tolerances are specified as well as physical, performance, and testing requirements.
1.2 The values of temperature in this specification are based on the International Temperature Scale of 1990 (ITS-90).
1.3 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 exact equivalents, and each system shall be independent of the other.
1.4 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 and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:E1137/E1137M −08
Standard Specification for
1
Industrial Platinum Resistance Thermometers
ThisstandardisissuedunderthefixeddesignationE1137/E1137M;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 Chromium-TungstenAlloy (UNS N06674) Seamless Pipe
and Tube
1.1 This specification covers the requirements for metal-
E344Terminology Relating to Thermometry and Hydrom-
sheathed industrial platinum resistance thermometers (PRT’s)
etry
suitable for direct immersion temperature measurement. It
E644Test Methods for Testing Industrial Resistance Ther-
applies to PRT’s with an average temperature coefficient of
mometers
resistance between 0 and 100 °C of 0.385%⁄°C and nominal
E1652Specification for Magnesium Oxide and Aluminum
resistance at 0 °C of 100 Ω or other specified value. This
Oxide Powder and Crushable Insulators Used in the
specification covers PRT’s suitable for all or part of the
Manufacture of Base Metal Thermocouples, Metal-
temperature range−200 to 650 °C. The resistance-temperature
Sheathed Platinum Resistance Thermometers, and Noble
relationship and tolerances are specified as well as physical,
Metal Thermocouples
performance, and testing requirements.
1.2 Thevaluesoftemperatureinthisspecificationarebased
3. Terminology
2
on the International Temperature Scale of 1990 (ITS-90).
3.1 Definitions—For definitions of terms used in this speci-
1.3 The values stated in inch-pound units or SI (metric)
fication see Terminology E344.
unitsmayberegardedseparatelyasstandard.Thevaluesstated
3.2 Definitions of Terms Specific to This Standard:
ineachsystemarenotexactequivalents,andeachsystemshall
3.2.1 connecting wire end closure, n—moisture barrier at
be independent of the other.
the connecting wire end of the sheath.
1.4 This standard does not purport to address all of the
3.2.1.1 Discussion—The closure is intended to provide a
safety concerns, if any, associated with its use. It is the
sealsufficienttopreventthesensor’sinsulationresistancefrom
responsibility of the user of this standard to establish appro-
dropping below the minimum requirements.
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3.2.2 connecting wires, n—wires that run from the element
through the connecting wire end closure and external to the
2. Referenced Documents
sheath.
3
2.1 ASTM Standards:
3.2.3 excitation, n—electrical current passing through the
A269Specification for Seamless and Welded Austenitic
element.
Stainless Steel Tubing for General Service
3.2.4 g-level, n—acceleration of an object relative to the
B167Specification for Nickel-Chromium-IronAlloys (UNS
local acceleration of gravity.
N06600, N06601, N06603, N06690, N06693, N06025,
3.2.4.1 Discussion—For example, a g-level of 5 is equiva-
N06045, and N06696), Nickel-Chromium-Cobalt-
2
lent to an acceleration of approximately 5×9.8 m/s =49.0
Molybdenum Alloy (UNS N06617), and Nickel-Iron-
2
m/s .
3.2.5 minimum immersion length, n—depth that a thermom-
1
This specification is under the jurisdiction of ASTM Committee E20 on
eter should be immersed, in a uniform temperature
Temperature Measurement and is the direct responsibility of Subcommittee E20.03
environment, such that further immersion does not produce a
on Resistance Thermometers.
change in indicated temperature greater than the specified
Current edition approved Nov. 1, 2008. Published December 2008. Originally
approved in 1987. Last previous edition approved in 2004 as E1137–04. DOI:
tolerance.
10.1520/E1137_E1137M-08.
2
3.2.6 PRT design, n—generic term used to differentiate
Preston-Thomas, H., “The International Temperature Scale of 1990 (ITS-90),”
Metrologia , Vol 27, No. 1. 1990, pp 3– 10, ibid, Vol 27, No. 2, 1990, p107
between different PRT construction details, such as element
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and connecting wire construction, insulation methods, sealing
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
techniques,andmountingmethods(forexample,springloaded
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. or direct mounting).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
E1137/E1137M−08
3.2.7 self-heating, n—change in temperature of the element 6.1.9 Serial Number identification requirement (mandatory
caused by the heating effect of the excitation. if an individual calibration or test record will be maintain
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:E 1137/E 1137M–04 Designation: E1137/E1137M – 08
Standard Specification for
1
Industrial Platinum Resistance Thermometers
ThisstandardisissuedunderthefixeddesignationE1137/E1137M;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
1.1 This specification covers the requirements for metal-sheathed industrial platinum resistance thermometers (PRT’s) suitable
for direct immersion temperature measurement. It applies to PRT’s with an average temperature coefficient of resistance between
0 and 100 °C of 0.385%/°C and nominal resistance at 0 °C of 100 V or other specified value. This specification covers PRT’s
suitableforallorpartofthetemperaturerange−200to650°C.Theresistance-temperaturerelationshipandtolerancesarespecified
as well as physical, performance, and testing requirements.
2
1.2 The values of temperature in this specification are based on the International Temperature Scale of 1990 (ITS-90).
1.3 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 exact equivalents, and each system shall be independent of the other.
1.4 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
3
2.1 ASTM Standards:
A269 Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service
B167 Specification for Nickel-Chromium-Iron Alloys (UNS N06600, N06601, N06603, N06690, N06693, N06025, N06045,
and N06045)N06696) and Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617) Seamless Pipe and Tube
E344 Terminology Relating to Thermometry and Hydrometry
E644 Test Methods for Testing Industrial Resistance Thermometers
E1652 Specification for Magnesium Oxide andAluminum Oxide Powder and Crushable Insulators Used in the Manufacture of
Metal-Sheathed Platinum Resistance Thermometers, Base Metal Thermocouples, and Noble Metal Thermocouples
3. Terminology
3.1 Definitions—For definitions of terms used in this specification see Terminology E 344E344.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 connecting wire end closure, n—moisture barrier at the connecting wire end of the sheath.
3.2.1.1 Discussion—The closure is intended to provide a seal sufficient to prevent the sensor’s insulation resistance from
dropping below the minimum requirements.
3.2.2 connecting wires, n—wires that run from the element through the connecting wire end closure and external to the sheath.
3.2.3 excitation, n—electrical current passing through the element.
3.2.4 g-level, n—acceleration of an object relative to the local acceleration of gravity.
2 2
3.2.4.1 Discussion—For example, a g-level of 5 is equivalent to an acceleration of approximately 5 39.8 m/s =49.0 m/s .
3.2.5 minimum immersion length, n—depth that a thermometer should be immersed, in a uniform temperature environment,
such that further immersion does not produce a change in indicated temperature greater than the specified tolerance.
3.2.6 PRT design, n—generic term used to differentiate between different PRT construction details, such as element and
1
ThisspecificationisunderthejurisdictionofASTMCommitteeE20onTemperatureMeasurementandisthedirectresponsibilityofSubcommitteeE20.03onResistance
Thermometers.
Current edition approved Aug. 1, 2004. Published August 2004. Originally approved in 1987. Last previous edition approved in 1997 as E 1137–97.
Current edition approved Nov. 1, 2008. Published December 2008. Originally approved in 1987. Last previous edition approved in 2004 as E1137–04. DOI:
10.1520/E1137_E1137M-08.
2
Preston-Thomas, H., “The International Temperature Scale of 1990 (ITS-90),” Metrologia, Vol 27, No. 1, 1990, pp. 3–10. For errata see ibid, Vol 27, No. 2, 1990, p.
107. Metrologia , Vol 27, No. 1. 1990, pp 3– 10, ibid, Vol 27, No. 2, 1990, p107
3
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@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 Co
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:E 1137/E 1137M–04 Designation: E1137/E1137M – 08
Standard Specification for
1
Industrial Platinum Resistance Thermometers
ThisstandardisissuedunderthefixeddesignationE1137/E1137M;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
1.1 This specification covers the requirements for metal-sheathed industrial platinum resistance thermometers (PRT’s) suitable
for direct immersion temperature measurement. It applies to PRT’s with an average temperature coefficient of resistance between
0 and 100 °C of 0.385%/°C and nominal resistance at 0 °C of 100 V or other specified value. This specification covers PRT’s
suitableforallorpartofthetemperaturerange−200to650°C.Theresistance-temperaturerelationshipandtolerancesarespecified
as well as physical, performance, and testing requirements.
2
1.2 The values of temperature in this specification are based on the International Temperature Scale of 1990 (ITS-90).
1.3 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 exact equivalents, and each system shall be independent of the other.
1.4 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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
3
2.1 ASTM Standards:
A269 Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service
B167 Specification for Nickel-Chromium-Iron Alloys (UNS N06600, N06601, N06603, N06690, N06693, N06025, N06045,
and N06045)N06696) and Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617) Seamless Pipe and Tube
E344 Terminology Relating to Thermometry and Hydrometry
E644 Test Methods for Testing Industrial Resistance Thermometers
E1652 Specification for Magnesium Oxide andAluminum Oxide Powder and Crushable Insulators Used in the Manufacture of
Metal-Sheathed Platinum Resistance Thermometers, Base Metal Thermocouples, and Noble Metal Thermocouples
3. Terminology
3.1 Definitions—For definitions of terms used in this specification see Terminology E 344E344.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 connecting wire end closure, n—moisture barrier at the connecting wire end of the sheath.
3.2.1.1 Discussion—The closure is intended to provide a seal sufficient to prevent the sensor’s insulation resistance from
dropping below the minimum requirements.
3.2.2 connecting wires, n—wires that run from the element through the connecting wire end closure and external to the sheath.
3.2.3 excitation, n—electrical current passing through the element.
3.2.4 g-level, n—acceleration of an object relative to the local acceleration of gravity.
2 2
3.2.4.1 Discussion—For example, a g-level of 5 is equivalent to an acceleration of approximately 5 39.8 m/s =49.0 m/s .
3.2.5 minimum immersion length, n—depth that a thermometer should be immersed, in a uniform temperature environment,
such that further immersion does not produce a change in indicated temperature greater than the specified tolerance.
3.2.6 PRT design, n—generic term used to differentiate between different PRT construction details, such as element and
1
ThisspecificationisunderthejurisdictionofASTMCommitteeE20onTemperatureMeasurementandisthedirectresponsibilityofSubcommitteeE20.03onResistance
Thermometers.
Current edition approved Aug. 1, 2004. Published August 2004. Originally approved in 1987. Last previous edition approved in 1997 as E 1137–97.
Current edition approved Nov. 1, 2008. Published December 2008. Originally approved in 1987. Last previous edition approved in 2004 as E1137–04. DOI:
10.1520/E1137_E1137M-08.
2
Preston-Thomas, H., “The International Temperature Scale of 1990 (ITS-90),” Metrologia, Vol 27, No. 1, 1990, pp. 3–10. For errata see ibid, Vol 27, No. 2, 1990, p.
107. Metrologia , Vol 27, No. 1. 1990, pp 3– 10, ibid, Vol 27, No. 2, 1990, p107
3
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,orcontactASTMCustomerServiceatservice@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 Co
...
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