1 / 31

Standards for Radiation Thermometry

Standards for Radiation Thermometry. Frank Liebmann NCSLi 2012. Overview. Learning Objectives Introduction Overview of Standards BIPM IEC ASTM VDI/VDE MSL EMA Concluding Remarks. Overview. Learning Objectives Introduction Overview of Standards BIPM IEC ASTM VDI/VDE MSL EMA

balin
Download Presentation

Standards for Radiation Thermometry

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Standards for Radiation Thermometry Frank Liebmann NCSLi 2012

  2. Overview • Learning Objectives • Introduction • Overview of Standards • BIPM • IEC • ASTM • VDI/VDE • MSL • EMA • Concluding Remarks Liebmann - NCSL

  3. Overview • Learning Objectives • Introduction • Overview of Standards • BIPM • IEC • ASTM • VDI/VDE • MSL • EMA • Concluding Remarks Liebmann - NCSL

  4. Learning Objectives • Gain knowledge of the published standards available pertaining to radiation thermometry and infrared thermometry. • Apply published standards to measurement, calibration, and testing involving radiation thermometry and infrared thermometry. Liebmann - NCSL

  5. Introduction • Historically a lack of standards • Past 5 years, an increase of standards Liebmann - NCSL

  6. Overview of Standards Liebmann - NCSL

  7. Overview • Learning Objectives • Introduction • Overview of Standards • BIPM • IEC • ASTM • VDI/VDE • MSL • EMA • Concluding Remarks Liebmann - NCSL

  8. BIPM • CCT-WG508-03, “Uncertainty budgets for calibration of radiation thermometers below the silver point” • Scope is limited to radiation thermometers with readout in radiance and not temperature • Useful for other types of work Liebmann - NCSL

  9. BIPM – Sakuma-Hattori Liebmann - NCSL

  10. BIPM – Other Standards • CCT/03-03, “Uncertainty budgets for realization of scales by radiation thermometry” • Covers work done above the silver-point (961.78 °C) • Fixed-points as blackbody sources Liebmann - NCSL

  11. Overview • Learning Objectives • Introduction • Overview of Standards • BIPM • IEC • ASTM • VDI/VDE • MSL • EMA • Concluding Remarks Liebmann - NCSL

  12. IEC 62492-1 “Industrial process control devices - Radiation thermometers - Part 1: Technical data for radiation thermometers” • Terms, definitions and abbreviations for radiation thermometry • How to state technical data based on these terms all related to radiation thermometry Liebmann - NCSL

  13. IEC Work Items • Part 2 – Specifications • Being drafted • Part 3 – Test Methods • Not yet started Liebmann - NCSL

  14. Overview • Learning Objectives • Introduction • Overview of Standards • BIPM • IEC • ASTM • VDI/VDE • MSL • EMA • Concluding Remarks Liebmann - NCSL

  15. ASTM Committee E20 • Committee E20 on Temperature Measurement • Subcommittees Liebmann - NCSL

  16. E20.02 Roadmap • 2008 • Get handheld IR thermometer users to make more accurate measurements • Usage (E2758) • Calibration (E2847) • Currently • RT Classification • Emissivity Standard • RT Manual Liebmann - NCSL

  17. ASTM E20.02 Standards • E1256-11a: Standard Test Methods for Radiation Thermometers (Single Waveband Type) • E2758-10: Standard Guide for Selection and Use of Wideband, Low Temperature Infrared Thermometers • E2847-11: Standard Practice for Calibration and Accuracy Verification of Wideband Infrared Thermometers Liebmann - NCSL

  18. ASTM E1256 Standard Test Methods for Radiation Thermometers (Single Waveband Type) • Calibration Accuracy Test Method • Repeatability Test Method • Field-of-View Test Method (Target Size Test Method) • Response Time Test Method • Warm-Up Time Test Method • Long-Term Stability Test Method (Long-Term Drift Test Method) Liebmann - NCSL

  19. ASTM E2758 Standard Guide for Selection and Use of Wideband, Low Temperature Infrared Thermometers • Basic usage of infrared thermometers • Information on issues that may arise when using infrared thermometry • Test methods to determine • Emissivity • Transmissivity • Reflected temperature • Graphical summary of equations for infrared thermometry • Mathematical methods to determine the error caused by emissivity miscalculation, reflected temperature miscalculation, and atmospheric effects • The mathematical methods use the Sakuma-Hattori Equation • Contain worked examples Liebmann - NCSL

  20. ASTM E2847 Standard Practice for Calibration and Accuracy Verification of Wideband Infrared Thermometers • Comparison of an “infrared thermometer to the radiance temperature of a radiation source” • Cavity blackbody sources • Flat-plate sources • Equipment • Thermal Radiation Source • Aperture * • Transfer Standard • Ambient Temperature Thermometer • Distance Measuring Device • Purge * • Two traceability schemes • Preparation of Equipment • Calibration Procedure • Uncertainties Liebmann - NCSL

  21. E2847 Liebmann - NCSL

  22. Overview • Learning Objectives • Introduction • Overview of Standards • BIPM • IEC • ASTM • VDI/VDE • MSL • EMA • Concluding Remarks Liebmann - NCSL

  23. VDI/VDE VereinDeutscherIngenieure (VDI) and Verband der Elektrotechnik, Elektronik und Informationstechnik (VDE) VDI/VDE 3511 Blatt 4 TechnischeTemperaturmessungStrahlungsthermometrie (VDI/VDE 3511 Part 4 Temperature measurement in industry – Radiation thermometry) • 4 Documents covering radiation thermometry • Part 4, discusses basic theoretical and practical considerations concerning radiation thermometry • Part 4.2 contains the “Maintenance of the specification for radiation thermometers” • Part 4.3 is entitled “Standard test methods for radiation thermometers with one wavelength range” • Part 4.4 is entitled, “Calibration of radiation thermometers” Liebmann - NCSL

  24. VDI/VDE Liebmann - NCSL

  25. Overview • Learning Objectives • Introduction • Overview of Standards • BIPM • IEC • ASTM • VDI/VDE • MSL • EMA • Concluding Remarks Liebmann - NCSL

  26. MSL TG22 “MSL Technical Guide 22, Calibration of Low-Temperature Infrared Thermometers”. • Geared towards handheld infrared thermometers • How infrared thermometers measure temperature • Discusses influences on infrared thermometer measurement including introduction of a measurement equation • How the signal is processed and about measurement errors • Calibration and calibration sources including the concepts of calibrating the source by contact thermometry or by radiation thermometry • Method to determine detector temperature for an infrared thermometer. Liebmann - NCSL

  27. Overview • Learning Objectives • Introduction • Overview of Standards • BIPM • IEC • ASTM • VDI/VDE • MSL • EMA • Concluding Remarks Liebmann - NCSL

  28. Entidad Mexicana de Acreditación GuíaTécnicaSobreTrazabilidad e Incertidumbre en la Calibración de Termómetros de Radiación Technical Guide on Traceability and Uncertainty for Radiation Thermometer Calibration • Purely in Spanish • Traceability • Uncertainty • Calibration schemes for calibration equipment • Good practice for radiation thermometry metrology Liebmann - NCSL

  29. Overview • Learning Objectives • Introduction • Overview of Standards • BIPM • IEC • ASTM • VDI/VDE • MSL • EMA • Concluding Remarks Liebmann - NCSL

  30. Concluding Remarks Liebmann - NCSL

  31. Questions Liebmann - NCSL

More Related