ASTM E839-05
Historical Standard: ASTM E839-05 Standard Test Methods for Sheathed Thermocouples and Sheathed Thermocouple Material
SUPERSEDED (see Active link, below)
ASTM E839
1. Scope
1.1 These are test methods for sheathed thermocouple material and assemblies.
1.2 The tests are intended to ensure quality control and to evaluate the suitability of sheathed thermocouple material or assemblies for specific applications. Some alternative test methods to obtain the same information are given, since in a given situation an alternative test method may be more practical. Service conditions are widely variable and so it is unlikely that all the tests described will be appropriate for a given thermocouple application. A brief statement is made following each test description to indicate when it might be used.
1.3 The tests described herein include test methods to measure the following properties of sheathed thermocouple material and assemblies.
1.3.1 Insulation PropertiesCompaction-absorption method and tension method.
Thickness.
Resistance-room temperature and elevated temperature.
1.3.2 Sheath Properties Integrity-water test (two test methods) and mass spectrometer.
Dimensions-length, diameter, and roundness.
Wall thickness.
Surface-gross visual, finish, defect detection by dye penetrant, and cold-lap detection by tension test.
Metallurgical structure.
Ductility-bend test and tension test.
1.3.3 Thermoelement PropertiesCalibration.
Homogeneity.
Drift.
Thermoelement diameter, roundness, and surface appearance.
Thermoelement spacing.
Thermoelement ductility.
Metallurgical structure.
1.3.4 Thermocouple Assembly PropertiesDimensions-length, diameter, and roundness.
Surface-gross visual, finish, reference end seal, and defect detection by dye penetrant.
Electrical-continuity, loop resistance, and connector polarity.
Radiographic inspection.
Thermoelement diameter.
Thermal response time.
Thermal cycle.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
E3 Guide for Preparation of Metallographic Specimens
E94 Guide for Radiographic Examination
E112 Test Methods for Determining Average Grain Size
E165 Practice for Liquid Penetrant Examination for General Industry
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E207 Test Method for Thermal EMF Test of Single Thermoelement Materials by Comparison with a Reference Thermoelement of Similar EMF-Temperature Properties
E220 Test Method for Calibration of Thermocouples By Comparison Techniques
E230 Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples
E235 Specification for Thermocouples, Sheathed, Type K and Type N, 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
E608/E608M Specification for Mineral-Insulated, Metal-Sheathed Base Metal Thermocouples
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E780 Test Method for Measuring the Insulation Resistance of Mineral-Insulated, Metal-Sheathed Thermocouples and Thermocouple Cable at Room Temperature
E1025 Practice for Design, Manufacture, and Material Grouping Classification of Hole-Type Image Quality Indicators (IQI) Used for Radiology
E1129/E1129M Specification for Thermocouple Connectors
E1350 Guide for Testing Sheathed Thermocouples, Thermocouples Assemblies, and Connecting Wires Prior to, and After Installation or Service
E1684 Specification for Miniature Thermocouple Connectors
E1751 Guide for Temperature Electromotive Force (EMF) Tables for Non-Letter Designated Thermocouple Combinations
E2181/E2181M Specification for Compacted Mineral-Insulated, Metal-Sheathed, Noble Metal Thermocouples and Thermocouple Cable
ANSI Standard
B46.1 Surface Texture Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.Keywords
high temperature insulation test; insulation resistance; sheath integrity; sheathed thermocouple; thermal cycle; thermal response time; thermocouple; thermocouple assembly properties; thermoelement; thermoelement properties ; Leak testing; Mass spectrometry; Megohmeter test; Sheathed thermocouples; Sheath integrity; Thermocouples; Voltage;
ICS Code
ICS Number Code 17.200.20 (Temperature-measuring instruments)
DOI: 10.1520/E0839-05
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