ASTM_E_2821_-_13.pdf

Designation:E282113Standard Specification forCompacted Mineral-Insulated,Metal-Sheathed Cable Usedin Industrial Resistance Thermometers1This standard is issued under the fixed designation E2821;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 Thisspecificationcoverstherequirementsforcompacted,mineral-insulated,metal-sheathed(MIMS)cablesused to manufacture metal-sheathed,industrial resistance ther-mometers referred to in this document as Resistance Tempera-ture Detectors or RTDs.1.2 The materials of construction include copper,nickel-clad copper,copper-45%nickel(constantan),or nickelconductors,an austenitic stainless steel or nickel-chromiumalloy sheath,and either magnesia(MgO)or alumina(Al2O3)insulation.1.3 The cable diameter is between 0.093 and 0.500 in.(2.33and 12.70 mm)and contains between two and eightconductors,set in various design configurations and wirespacings.1.4 The values of temperature in this specification are basedon the International Temperature Scale of 1990(ITS-90).1.5 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 The latest issues of the following documents form a partof this specification to the extent specified herein.In the eventof a conflict between this specification and other specificationsreferenced herein,this specification shall take precedence.2.2 Due to the similarity between Compacted MIMS Ther-mocouple Cable and Compacted MIMS Cable,some Thermo-couple ASTM Standards may apply.2.3 ASTM Standards:2A213/A213M Specification for Seamless Ferritic and Aus-tenitic Alloy-Steel Boiler,Superheater,and Heat-Exchanger TubesA249/A249M Specification for Welded Austenitic SteelBoiler,Superheater,Heat-Exchanger,and CondenserTubesA269 Specification for Seamless and Welded AusteniticStainless Steel Tubing for General ServiceA632 Specification for Seamless and Welded AusteniticStainless Steel Tubing(Small-Diameter)for General Ser-viceB163 Specification for Seamless Nickel and Nickel AlloyCondenser and Heat-Exchanger TubesB167 Specification for Nickel-Chromium-Iron Alloys(UNSN06600,N06601,N06603,N06690,N06693,N06025,N06045,andN06696),Nickel-Chromium-Cobalt-Molybdenum Alloy(UNS N06617),and Nickel-Iron-Chromium-Tungsten Alloy(UNS N06674)Seamless Pipeand TubeB516 Specification for Welded Nickel-Chromium-IronAlloy(UNS N06600,UNS N06603,UNS N06025,and UNSN06045)TubesE344 Terminology Relating to Thermometry and Hydrom-etryE780 Test Method for Measuring the Insulation Resistanceof Mineral-Insulated,Metal-Sheathed Thermocouples andThermocouple Cable at Room TemperatureE839 Test Methods for Sheathed Thermocouples andSheathed Thermocouple CableE1137/E1137M Specification for Industrial Platinum Resis-tance ThermometersE1652 Specification for Magnesium Oxide and AluminumOxide Powder and Crushable Insulators Used in theManufacture of Base Metal Thermocouples,Metal-Sheathed Platinum Resistance Thermometers,and NobleMetal Thermocouples1This specification is under the jurisdiction of ASTM Committee E20 onTemperature Measurement and is the direct responsibility of Subcommittee E20.03on Resistance Thermometers.Current edition approved May 1,2013.Published July 2013.DOI:10.1520/E2821-132For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.4 ANSI Standard:3ANSI B46.1 Surface Texture,Surface Roughness,Wavinessand Lay3.Terminology3.1 DefinitionsThe definitions given in Terminology E344shall apply to this specification.3.2 Definitions:3.2.1 lot,na quantity of finished MIMS RTD cablemanufactured from tubing from the same heat,wire from thesame spool and heat,and insulation from the same batch,thenassembled and processed together under controlled productionconditions to the required final outside diameter.3.2.2 raw material,ntubing,insulation,and wires used infabrication of MIMS RTD cable.4.Significance and Use4.1 MIMS RTD cable may be used as follows:4.1.1 As a cable for attaching the sensing element to asensor termination within a thermometer(see SpecificationE1137/E1137M).4.1.2 As an extension cable connecting a ther