ASTM-E220 2019

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E220-19 Standard Test Method for Calibration of Thermocouples By Comparison Techniques

Published By	Publication Date	Number of Pages
ASTM	2019	16

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Categories: 17.200.20 - Temperature-measuring instruments, ASTM

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Description

ASTM E220-19

Active Standard: Standard Test Method for Calibration of Thermocouples By Comparison Techniques

ASTM E220

Scope

1.1 This test method describes the principles, apparatus, and procedure for calibrating thermocouples by comparison with a reference thermometer. Calibrations are covered over temperature ranges appropriate to the individual types of thermocouples within an overall range from approximately −195 °C to 1700 °C (−320 °F to 3100 °F).

1.2 In general, this test method is applicable to unused thermocouples. This test method does not apply to used thermocouples due to their potential material inhomogeneity—the effects of which cannot be identified or quantified by standard calibration techniques. Thermocouples with large-diameter thermoelements and sheathed thermocouples may require special care to control thermal conduction losses.

1.3 In this test method, all values of temperature are based on the International Temperature Scale of 1990. See Guide E1594.

1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

calibration; comparison techniques; thermocouple; thermoelement;

ICS Code

ICS Number Code 17.200.20 (Temperature-measuring instruments)

DOI: 10.1520/E0220-19

Additional information

Standard Title	E220-19 Standard Test Method for Calibration of Thermocouples By Comparison Techniques
Published Code	ASTM
Publication Date	2019
Pages Count	16
ICS Codes	17.200.20 - Temperature-measuring instruments