ASTM E1652

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.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. 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.

2. Referenced Documents

B329 Test Method for Apparent Density of Metal Powders and Related Compounds Using the Scott Volumeter
C573 Methods for Chemical Analysis of Fireclay and High-Alumina Refractories
C574 Method for Chemical Analysis of Magnesite and Dolomite Refractories
C809 Test Methods for Chemical, Mass Spectrometric, and Spectrochemical Analysis of Nuclear-Grade Aluminum Oxide and Aluminum Oxide-Boron Carbide Composite Pellets
C832 Test Method for Measuring the Thermal Expansion and Creep of Refractories Under Load
D2766 Test Method for Specific Heat of Liquids and Solids
D2858 Test Method for Thermal Conductivity of Electrical Grade Magnesium Oxide
E1137 Specification for Industrial Platinum Resistance Thermometers
E1225 Test Method for Thermal Conductivity of Solids by Means of the Guarded-Comparative-Longitudinal Heat Flow Technique
E2181/E2181M Specification for Compacted Mineral-Insulated, Metal-Sheathed, Noble Metal Thermocouples and Thermocouple Cable
E228 Test Method for Linear Thermal Expansion of Solid Materials with a Vitreous Silica Dilatometer
E235 Specification for Thermocouples, Sheathed, Type K, for Nuclear or for Other High-Reliability Applications
E344 Terminology Relating to Thermometry and Hydrometry
E585/E585M Specification for Compacted Mineral-Insulated, Metal-Sheathed, Base Metal Thermocouple Cable

Index Terms

aluminium oxide; crushable; insulator; magnesium oxide; mineral insulated; metal sheathed cable; platinum resistance thermometer; thermocouple; base metal; thermocouple; noble metal; ICS Number Code 17.200.20; 29.035.30

Citing ASTM Standards

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