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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

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Standards for Radiation Thermometry

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  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

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