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ASTM E1652-03

(Specification)

Standard Specification for Magnesium Oxide and Aluminum Oxide Powder and Crushable Insulators Used in the Manufacture of Metal-Sheathed Platinum Resistance Thermometers, Base Metal Thermocouples, and Noble Metal Thermocouples

Standard Specification for Magnesium Oxide and Aluminum Oxide Powder and Crushable Insulators Used in the Manufacture of Metal-Sheathed Platinum Resistance Thermometers, Base Metal Thermocouples, and Noble Metal Thermocouples

ABSTRACT
This specification covers the requirements for magnesium oxide (MgO) and aluminum oxide (Al2O3) powders and crushable insulators used to manufacture metal-sheathed platinum resistance thermometers (PRTs), noble metal thermocouples, base metal thermocouples, and their respective cables. The following test shall be performed to meet the requirements specified: breaking force test; wet chemical analysis; fusion calorimetric analysis; quantitative analysis; and density determination.
SCOPE
1.1 This specification covers the requirements for magnesium oxide (MgO) and aluminum oxide (Al2O3) powders and crushable insulators used to manufacture metal-sheathed platinum resistance thermometers (PRTs), noble metal thermocouples, base metal thermocouples, and their respective cables.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.

General Information

Status
Historical
Publication Date
09-May-2003
ICS
17.200.20 - Temperature-measuring instruments
29.035.30 - Glass and ceramic insulating materials
Technical Committee
E20 - Temperature Measurement
Current Stage
Ref Project

Relations

Replaces
ASTM E1652-00 - Standard Specification for Magnesium Oxide and Aluminum Oxide Powder and Crushable Insulators Used in the Manufacture of Metal-Sheathed Platinum Resistance Thermometers, Base Metal Thermocouples, and Noble Metal Thermocouples
Effective Date
10-May-2003
Replaced By
ASTM E1652-10 - Standard Specification for Magnesium Oxide and Aluminum Oxide Powder and Crushable Insulators Used in the Manufacture of Metal-Sheathed Platinum Resistance Thermometers, Base Metal Thermocouples, and Noble Metal Thermocouples
Effective Date
01-May-2010
Referred By
ASTM E2821-20 - Standard Specification for Compacted Mineral-Insulated, Metal-Sheathed Cable Used in Industrial Resistance Thermometers
Effective Date
10-May-2003
Referred By
ASTM E1137/E1137M-08(2020) - Standard Specification for Industrial Platinum Resistance Thermometers
Effective Date
10-May-2003
Referred By
ASTM E2181/E2181M-19 - Standard Specification for Compacted Mineral-Insulated, Metal-Sheathed, Noble Metal Thermocouples and Thermocouple Cable
Effective Date
10-May-2003
Referred By
ASTM E585/E585M-23 - Standard Specification for Compacted Mineral-Insulated, Metal-Sheathed, Base Metal Thermocouple Cable
Effective Date
10-May-2003
Referred By
ASTM E235/E235M-23 - Standard Specification for Type K and Type N Mineral-Insulated, Metal-Sheathed Thermocouples for Nuclear or for Other High-Reliability Applications
Effective Date
10-May-2003
Referred By
ASTM E780-17(2021) - Standard Test Method for Measuring the Insulation Resistance of Mineral-Insulated, Metal-Sheathed Thermocouples and Mineral-Insulated, Metal-Sheathed Cable at Room Temperature
Effective Date
10-May-2003

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ASTM E1652-03 - Standard Specification for Magnesium Oxide and Aluminum Oxide Powder and Crushable Insulators Used in the Manufacture of Metal-Sheathed Platinum Resistance Thermometers, Base Metal Thermocouples, and Noble Metal ThermocouplesASTM E1652-03 - Standard Specification for Magnesium Oxide and Aluminum Oxide Powder and Crushable Insulators Used in the Manufacture of Metal-Sheathed Platinum Resistance Thermometers, Base Metal Thermocouples, and Noble Metal Thermocouples
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ASTM E1652-03 - Standard Specification for Magnesium Oxide and Aluminum Oxide Powder and Crushable Insulators Used in the Manufacture of Metal-Sheathed Platinum Resistance Thermometers, Base Metal Thermocouples, and Noble Metal Thermocouples
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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: E1652 – 03
Standard Specification for
Magnesium Oxide and Aluminum Oxide Powder and
Crushable Insulators Used in the Manufacture of Metal-
Sheathed Platinum Resistance Thermometers, Base Metal
1
Thermocouples, and Noble Metal Thermocouples
This standard is issued under the fixed designation E1652; the number immediately following the designation indicates the year 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.
3
1. Scope Grade Magnesium Oxide
E228 Test Method for Linear Thermal Expansion of Solid
1.1 This specification covers the requirements for magne-
Materials With a Push-Rod Dilatometer
sium oxide (MgO) and aluminum oxide (Al O ) powders and
2 3
E235 Specification for Thermocouples, Sheathed, Type K
crushable insulators used to manufacture metal-sheathed plati-
and Type N, for Nuclear or for Other High-Reliability
num resistance thermometers (PRTs), noble metal thermo-
Applications
couples,basemetalthermocouples,andtheirrespectivecables.
E344 Terminology Relating to Thermometry and Hydrom-
1.2 The values stated in SI units are to be regarded as the
etry
standard. The values given in parentheses are for information
E585/E585M Specification for Compacted Mineral-
only.
Insulated, Metal-Sheathed, Base Metal Thermocouple
1.3 This standard does not purport to address all of the
Cable
safety concerns, if any, associated with its use. It is the
E1137/E1137M Specification for Industrial Platinum Resis-
responsibility of the user of this standard to establish appro-
tance Thermometers
priate safety and health practices and determine the applica-
E1225 Test Method for Thermal Conductivity of Solids by
bility of regulatory limitations prior to use.
Means of the Guarded-Comparative-Longitudinal Heat
2. Referenced Documents Flow Technique
2
E2181/E2181M Specification for Compacted Mineral-
2.1 ASTM Standards:
Insulated, Metal-Sheathed, Noble Metal Thermocouples
B329 Test Method forApparent Density of Metal Powders
and Thermocouple Cable
and Compounds Using the Scott Volumeter
C573 MethodsforChemicalAnalysisofFireclayandHigh-
3. Terminology
Alumina Refractories
3.1 The definitions given in Terminology E344 shall apply
C574 Method for Chemical Analysis of Magnesite and
to this specification.
Dolomite Refractories
C809 Test Methods for Chemical, Mass Spectrometric, and
4. Significance and Use
Spectrochemical Analysis of Nuclear-Grade Aluminum
4.1 Magnesium oxide and aluminum oxide are used to
Oxide and AluminumOxide-Boron Carbide Composite
electrically isolate and mechanically support the thermoele-
Pellets
ments of a thermocouple (see Specifications E235, E585/
C832 Test Method of Measuring Thermal Expansion and
E585M, and E2181/E2181M) and the connecting wires of a
Creep of Refractories Under Load
PRT(see Specification E1137/E1137M) within a metal sheath.
D2766 TestMethodforSpecificHeatofLiquidsandSolids
The metal sheath is typically reduced in diameter to compact
D2858 Test Method for Thermal Conductivity of Electrical
the oxide powder or crushable oxide insulators around the
thermoelements or wires.
1
This specification is under the jurisdiction of ASTM Committee E20 on 4.2 In order to be suitable for this purpose, the materials
Temperature Measurement and is the direct responsibility of Subcommittee E20.04
shall meet certain criteria for purity and for mechanical and
on Thermocouples.
dimensional characteristics. Material that does not meet the
Current edition approved May 10, 2003. Published June 2003. Originally
purity criteria may cause premature failure of the sensor.
approved in 1995. Last previous edition approved in 2000 as E1652–00. DOI:
10.1520/E1652-03.
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
3
Standards volume information, refer to the standard’s Document Summary page on Withdrawn. The last approved version of this historical standard is referenced
the ASTM website. on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
E1652 – 03
4.3 Use of this specification for the procurement of powder 7. Physical Properties
and crushable insulators will help to ensure that the product
7.1 Density—The density of crushable magnesium oxide
obtained is suitable for the intended purpose.
and aluminum oxide insulators typically ranges from 2060
3 3 3 3
4.4 Usefulinformationaboutaluminaandmagnesiaisgiven
kg/m (0.074 lbm/in. ) to 3060 kg/m (0.111 lbm/in. ).
in the appendixes.
Specific density requirements, as well as the test method to be
u
...

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