ASTM E839-2011(2016) red 2914 Standard Test Methods for Sheathed Thermocouples and Sheathed Thermocouple Cable.pdf
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1、Designation: E839 11E839 11 (Reapproved 2016)Standard Test Methods forSheathed Thermocouples and Sheathed ThermocoupleCable1This standard is issued under the fixed designation E839; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, t
2、he 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 This document lists methods for testing Mineral-Insulated, Metal-Sheathed (MIMS) thermocouple assemblies an
3、dthermocouple cable, but does not require that any of these tests be performed nor does it state criteria for acceptance. Theacceptance criteria are given in other ASTM standard specifications that impose this testing for those thermocouples and cable.Examples from ASTM thermocouple specifications f
4、or acceptance criteria are given for many of the tests. These tabulated valuesare not necessarily those that would be required to meet these tests, but are included as examples only.1.2 These tests are intended to support quality control and to evaluate the suitability of sheathed thermocouple cable
5、 orassemblies for specific applications. Some alternative test methods to obtain the same information are given, since in a givensituation, an alternative test method may be more practical. Service conditions are widely variable, so it is unlikely that all the testsdescribed will be appropriate for
6、a given thermocouple application. A brief statement is made following each test description toindicate when it might be used.1.3 The tests described herein include test methods to measure the following properties of sheathed thermocouple material andassemblies.1.3.1 Insulation Properties:1.3.1.1 Com
7、pactiondirect method, absorption method, and tension method.1.3.1.2 Thickness. Thickness.1.3.1.3 ResistanceatResistanceat room temperature and at elevated temperature.1.3.2 Sheath PropertiesProperties:1.3.2.1 Integritytwo water test methods and mass spectrometer.1.3.2.2 Dimensionslength, diameter, a
8、nd roundness.1.3.2.3 Wall thickness. Wall thickness.1.3.2.4 SurfacegrossSurfacegross visual, finish, defect detection by dye penetrant, and cold-lap detection by tension test.1.3.2.5 Metallurgical structure. Metallurgical structure.1.3.2.6 DuctilitybendDuctilitybend test and tension test.1.3.3 Therm
9、oelement Properties:1.3.3.1 Calibration. Calibration.1.3.3.2 Homogeneity. Homogeneity.1.3.3.3 Drift. Drift.1.3.3.4 Thermoelement diameter, roundness, and surface appearance. Thermoelement diameter, roundness, and surfaceappearance.1.3.3.5 Thermoelement spacing. Thermoelement spacing.1.3.3.6 Thermoel
10、ement ductility. Thermoelement ductility.1.3.3.7 Metallurgical structure. Metallurgical structure.1.3.4 Thermocouple Assembly Properties:1.3.4.1 Dimensionslength, diameter, and roundness.1.3.4.2 Surfacegross visual, finish, reference junction end moisture seal, and defect detection by dye penetrant.
11、1.3.4.3 Electricalcontinuity, loop resistance, and connector polarity.1.3.4.4 Radiographic inspection. Radiographic inspection.1 These test methods are under the jurisdiction of ASTM Committee E20 on Temperature Measurement and is the direct responsibility of Subcommittee E20.04 onThermocouples.Curr
12、ent edition approved Nov. 1, 2011Nov. 1, 2016. Published January 2012January 2016. Originally approved in 1989. Last previous edition approved in 20052011 asE839 05.E839 11. DOI: 10.1520/E0839-11.10.1520/E0839-11R16.This document is not an ASTM standard and is intended only to provide the user of an
13、 ASTM standard an indication of what changes have been made to the previous version. Becauseit 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 versionof the standard as publis
14、hed by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States11.3.4.5 Thermoelement diameter. Thermoelement diameter.1.3.4.6 Thermal response time. Thermal response time.1.3.4.7 Thermal cycle. T
15、hermal cycle.1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in eachsystem may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from thetwo systems may result in non-c
16、onformance with the standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations p
17、rior to use.2. Referenced Documents2.1 ASTM Standards:2E3 Guide for Preparation of Metallographic SpecimensE94 Guide for Radiographic ExaminationE112 Test Methods for Determining Average Grain SizeE165 Practice for Liquid Penetrant Examination for General IndustryE177 Practice for Use of the Terms P
18、recision and Bias in ASTM Test MethodsE207 Test Method for Thermal EMF Test of Single Thermoelement Materials by Comparison with a Reference Thermoelementof Similar EMF-Temperature PropertiesE220 Test Method for Calibration of Thermocouples By Comparison TechniquesE230 Specification and Temperature-
19、Electromotive Force (EMF) Tables for Standardized ThermocouplesE235 Specification for Thermocouples, Sheathed, Type K and Type N, for Nuclear or for Other High-Reliability ApplicationsE344 Terminology Relating to Thermometry and HydrometryE585/E585M Specification for Compacted Mineral-Insulated, Met
20、al-Sheathed, Base Metal Thermocouple CableE608/E608M Specification for Mineral-Insulated, Metal-Sheathed Base Metal ThermocouplesE691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test MethodE780 Test Method for Measuring the Insulation Resistance of Mineral-Insula
21、ted, Metal-Sheathed Thermocouples andThermocouple Cable at Room TemperatureE1025 Practice for Design, Manufacture, and Material Grouping Classification of Hole-Type Image Quality Indicators (IQI)Used for RadiologyE1129/E1129M Specification for Thermocouple ConnectorsE1350 Guide for Testing Sheathed
22、Thermocouples, Thermocouples Assemblies, and Connecting Wires Prior to, and AfterInstallation or ServiceE1684 Specification for Miniature Thermocouple ConnectorsE1751 Guide for Temperature Electromotive Force (EMF) Tables for Non-Letter Designated Thermocouple Combinations(Withdrawn 2009)3E2181/E218
23、1M Specification for Compacted Mineral-Insulated, Metal-Sheathed, Noble Metal Thermocouples and Thermo-couple Cable2.2 ANSI StandardB 46.1 Surface Texture42.3 Other StandardUSAEC Division of Reactor Development and Technology RDT Standard C 2-1T Determination of Insulation Compaction inCeramic Insul
24、ated Conductors August 19703. Terminology3.1 DefinitionsThe definitions given in Terminology E344 shall apply to these test methods.3.2 Definitions of Terms Specific to This Standard:3.2.1 bulk cable, na single length of thermocouple cable produced from the same raw material lots after completion of
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