ASTM E2820-13 (2024) PDF
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St ASTM E2820-13 (2024)
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Ст ASTM E2820-13 (2024)
Original standard ASTM E2820-13 (2024) in PDF full version. Additional info + preview on request
Full title and description
ASTM E2820-13(2024) — Standard Test Method for Evaluating Thermal EMF Properties of Base‑Metal Thermocouple Connectors. This method specifies procedures to measure the thermal electromotive force (emf) introduced by base‑metal thermocouple connectors (types E, J, K, N and T) and to report the measured emf as an equivalent temperature deviation or error relative to a reference thermocouple of the same type.
Abstract
This standard describes an experimental test method to quantify connector‑introduced thermal emf under a controlled axial temperature gradient and defined thermal boundary conditions. Results are reported as temperature deviations (errors) or emf values and may be used to classify connector performance, inform component specifications, and compare connector designs. Typical sensitivity of the method allows verification of deviations greater than or equal to 1 °C.
General information
- Status: Active — reapproved (R24) / current as of 2024.
- Publication date: Reapproved/updated 2024 (reapproval published May 2024, original designation 2013).
- Publisher: ASTM International.
- ICS / categories: 17.200.20 (Temperature‑measuring instruments); Temperature measurement / thermocouple accessories.
- Edition / version: E2820‑13R24 (originally E2820‑13, reapproved 2024).
- Number of pages: 6.
Scope
This test method applies to base‑metal thermocouple connectors and connector components for types E, J, K, N and T. The procedure measures the thermal emf produced when the connector is subjected to a specified axial temperature gradient and defined boundary conditions; results are reported as equivalent temperature deviation or emf and can be used to verify connector deviations ≥ 1 °C. The method does not verify material conformity to Specification E230/E230M; it is intended to characterize connector performance under the stated test conditions.
Key topics and requirements
- Test setup and thermal boundary conditions for applying an axial temperature gradient across the connector.
- Measurement of connector thermal emf and conversion to equivalent temperature deviation (error) relative to a like‑type reference thermocouple.
- Required reporting format, number of replicates, and tolerances for result interpretation.
- Classification of connector performance for use in component specifications and engineering comparisons.
- Precision statement and interlaboratory study results informing repeatability and reproducibility (research report RR:E20‑1003 available).
Typical use and users
Used by test laboratories, thermocouple and connector manufacturers, quality engineers, calibration specialists, and R&D teams working on temperature measurement hardware. Typical applications include connector qualification, incoming inspection, product development comparisons, and inclusion of connector performance in component specifications.
Related standards
Commonly referenced and related ASTM standards include Specification E230/E230M (temperature‑emf tables for standardized thermocouples), E1129/E1129M and E1684/E1684M (connector specifications), and terminology and calibration guides such as E344. The standard has been reapproved to align with related thermometry documents.
Keywords
thermocouple connector; thermal emf; temperature emf; connector error; thermocouple contact; thermocouple terminal; connector classification; temperature measurement.
FAQ
Q: What is this standard?
A: ASTM E2820‑13(2024) is a standard test method that defines how to evaluate the thermal electromotive force introduced by base‑metal thermocouple connectors and how to report that effect as an equivalent temperature deviation or emf.
Q: What does it cover?
A: It covers the test apparatus and procedure for applying an axial temperature gradient across connectors, measurement and reporting conventions (emf and equivalent temperature deviation), and guidance for classification and comparison of connector performance. It is intended for base‑metal connector types E, J, K, N and T.
Q: Who typically uses it?
A: Manufacturers of thermocouples and connectors, test and calibration laboratories, quality and inspection engineers, and R&D teams working on temperature measurement components use this method to qualify and compare connector performance.
Q: Is it current or superseded?
A: The standard was originally published in 2013 and has been reapproved/reissued in 2024 (designation E2820‑13R24 / E2820‑13(2024)), and is listed as active in the ASTM catalog and standards repositories as of 2024. Users should verify the active designation in the ASTM catalog for the most current status.
Q: Is it part of a series?
A: It is part of the ASTM E20 committee’s set of standards relating to temperature measurement and thermocouple accessories; it is referenced by and related to several other E20 standards dealing with thermocouple specifications and terminology.
Q: What are the key keywords?
A: connector emf, thermocouple connector, thermocouple contact, thermocouple pin, thermocouple socket, thermocouple terminal, temperature measurement.