ASTM-E839 2005

$44.96

E839-05 Standard Test Methods for Sheathed Thermocouples and Sheathed Thermocouple Material

Published By	Publication Date	Number of Pages
ASTM	2005	15

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Categories: 17.200.20 - Temperature-measuring instruments, ASTM

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Description

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.

PDF Catalog

PDF Pages	PDF Title
1	Scope
2	Referenced Documents Terminology Summary of Test Methods
3	Significance and Use General Requirements Insulation Properties
4	FIG. 1 FIG. 2 FIG. 3
5	FIG. 4 FIG. 5
6	Sheath Properties
7	FIG. 6
8	Thermoelement Properties FIG. 7
9	Thermocouple Assembly Properties
11	FIG. 8
12	Report FIG. 9
13	Precision and Bias Keywords X1. EXAMPLES OF SPECIFICATIONS, TOLERANCES, AND ACCEPTANCE CRITERIA X1.1 Sheath, Thermoelement, and Insulation Thickness Examples X1.2 Insulation Resistance X1.3 Sheath Roundness and Wall Thickness for Various Sheath Diameters X1.4 Bend Test and Tension Test Acceptance Criteria (Examples) X1.5 Upper Temperature Limit for Various Sheath Diameters TABLE X1.1 TABLE X1.2 TABLE X1.3 TABLE X1.4
14	X1.6 Tolerances on Initial Values of EMF versus Temperature X1.7 Radiographic Penetrameter and Shim Thickness X1.8 Bend and Tension Test X1.9 Evaluation of Sheath to Thermoelement Locking TABLE X1.5 TABLE X1.6 TABLE X1.7 TABLE X1.8

Additional information

Standard Title	E839-05 Standard Test Methods for Sheathed Thermocouples and Sheathed Thermocouple Material
Published Code	ASTM
Publication Date	2005
Pages Count	15
ICS Codes	17.200.20 - Temperature-measuring instruments

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ASTM-E839 2005

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