ASTM E452-02(2018)
Standard Test Method for Calibration of Refractory Metal Thermocouples Using a Radiation Thermometer
- Standard No.
- ASTM E452-02(2018)
- Release Date
- 2018
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM E452-02(2023)
- Latest
- ASTM E452-02(2023)
- Scope
- 1.1 This test method covers the calibration of refractory metal thermocouples using a radiation thermometer as the standard instrument. This test method is intended for use with types of thermocouples that cannot be exposed to an oxidizing atmosphere. These procedures are appropriate for thermocouple calibrations at temperatures above 800°C (1472°F). 1.2 The calibration method is applicable to the following thermocouple assemblies: 1.2.1 Type 1—Bare-wire thermocouple assemblies in which vacuum or an inert or reducing gas is the only electrical insulating medium between the thermoelements. 1.2.2 Type 2—Assemblies in which loose fitting ceramic insulating pieces, such as single-bore or double-bore tubes, are placed over the thermoelements. 1.2.3 Type 2A—Assemblies in which loose fitting ceramic insulating pieces, such as single-bore or double-bore tubes, are placed over the thermoelements, permanently enclosed and sealed in a loose fitting metal or ceramic tube. 1.2.4 Type 3—Swaged assemblies in which a refractory insulating powder is compressed around the thermoelements and encased in a thin-walled tube or sheath made of a high melting point metal or alloy. 1.2.5 Type 4—Thermocouple assemblies in which one thermoelement is in the shape of a closed-end protection tube and the other thermoelement is a solid wire or rod that is coaxially supported inside the closed-end tube. The space between the two thermoelements can be filled with an inert or reducing gas, or with ceramic insulating materials, or kept under vacuum. 1.3 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. 1.4 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.
ASTM E452-02(2018) Referenced Document
- ASTM E1256 Standard Test Methods for Radiation Thermometers (Single Waveband Type)
- ASTM E1751 Standard Guide for Temperature Electromotive Force (emf) Tables for Non-Letter Designated Thermocouple Combinations *， 2024-04-21 Update
- ASTM E344 Terminology Relating to Thermometry and Hydrometry*， 2023-12-01 Update
- ASTM E563 Standard Practice for Preparation and Use of an Ice-Point Bath as a Reference Temperature
- ASTM E988 Standard Temperature-Electromotive Force (EMF) Tables for Tungsten-Rhenium Thermocouples
ASTM E452-02(2018) history
- 2023 ASTM E452-02(2023) Standard Test Method for Calibration of Refractory Metal Thermocouples Using a Radiation Thermometer
- 2018 ASTM E452-02(2018) Standard Test Method for Calibration of Refractory Metal Thermocouples Using a Radiation Thermometer
- 2002 ASTM E452-02(2013) Standard Test Method for Calibration of Refractory Metal Thermocouples Using a Radiation Thermometer
- 2002 ASTM E452-02(2007) Standard Test Method for Calibration of Refractory Metal Thermocouples Using a Radiation Thermometer
- 2002 ASTM E452-02 Standard Test Method for Calibration of Refractory Metal Thermocouples Using a Radiation Thermometer
- 1997 ASTM E452-97 Standard Test Method for Calibration of Refractory Metal Thermocouples Using a Radiation Thermometer
