The ITS10 Program Committee is pleased to announce that the Symposium will for the first time incorporate Workshop Training Sessions into the Program.  These will be three separate extended sessions provided by NIST staff for Training Purposes. These three courses are joint training sessions between the MSC and the ITS10 and are open to registered attendees from both events. The courses will run in parallel with other regular sessions for three 90 minute sessions each.

Fundamentals and Applications of Radiation Thermometry (syllabus)
Instructor: Howard Yoon, NIST

This workshop will cover the fundamentals and applications of radiation thermometry including Planck radiation law and properties of ideal and real blackbodies. Optical designs of radiation thermometers will also be discussed. Properties of radiation thermometers and characterizations needed to develop an uncertainty budget for radiation thermometer calibrations will be shown.  We will cover the temperature range from -50 °C to 3000 °C. The basic concepts will be illustrated with applied radiance temperature measurement examples from NIST calibration services and from NIST research involving radiation thermometer developments.  The intended audiences of the workshop are engineers, technicians, and scientists involved in radiation thermometer measurements and applications.

Introduction to Contact Thermometry: Theory and Practice (syllabus) (Part 1 Presentation)
Instructors: Weston Tew, Dawn Cross, and Karen Garrity, NIST 

This workshop will cover the fundamental aspects of contact thermometry and the practical aspects of common temperature sensors, including calibration methods. The methods discussed will span temperatures from -200 °C to +2000 °C. The theory behind temperature measurement and temperature scales will be reviewed. The technology supporting both standard- and common industrial-temperature sensors and temperature measurement systems will be discussed. Detailed guidance on the use of platinum-based resistance thermometers and noble-metal thermocouples will be provided. The design and practical role of fixed-point cells will be presented.  Practical aspects of thermometer calibration and best practices will be shown. The sessions will provide an introduction to the subject for the new practitioner. The intended audiences are engineers, technicians, and scientists involved in special test, calibration and quality control in common laboratory settings as well as those working in thermodynamic product development and related applications.

Introduction to Humidity and Trace Moisture Measurement (syllabus)
Instructor: Christopher Meyer, NIST 

Humidity is not a single quantity but a family of quantities that involve moisture content in a gas, including relative humidity, dew point, water amount fraction, and water mass ratio.  This course will teach the fundamentals of these quantities and explain how they relate to each other and are influenced by other quantities, such as temperature and pressure. Applications requiring accurate measurement and/or control of humidity will be discussed. The course will also describe the different types of instruments used to measure quantities in the humidity family, including chilled mirror hygrometers (dew point), capacitance sensors (relative humidity), psychrometers (relative humidity), and cavity ringdown spectrometers (water amount fraction). Finally, the course will discuss humidity generators and how they can be used as primary standards for water amount fraction and dew point for calibration of hygrometers. It will show how a humidity generator can be combined with a temperature-controlled chamber to make it a primary standard for calibration of relative humidity sensors. The NIST primary standard humidity generator will be fully described as an example of the type of generators found in national metrology institutes.

Day / Time

TBD Classroom 1

TBD Classroom 2

April 4, 10:45 – 12:15

Introduction to Contact Thermometry, Theory and Practice Part I Fundamentals, the ITS-90, and temperature standards

April 4, 16:00 – 17:30

Introduction to Contact Thermometry, Theory and Practice Part II Thermocouple Thermometry, Calibration Methods, and Best Practice

April 5, 10:45 – 12:15

Introduction to Contact Thermometry, Theory and Practice Part III Industrial Thermometers, Calibration Methods and Best Practice

April 5, 13:45 – 15:15

Introduction to Humidity and Trace Moisture Measurement Part I Fundamentals

April 6, 10:45 – 12:15

Introduction to Humidity and Trace Moisture Measurement Part II Humidity Generators

Fundamentals and Applications of Radiation Thermometry Part I: Blackbody Sources

April 6, 10:45 – 12:15

Introduction to Humidity and Trace Moisture Measurement Part III Hygrometers

Fundamentals and Applications of Radiation Thermometry Part II: Radiation Thermometers

April 7, 08:30 – 10:00


Fundamentals and Applications of Radiation Thermometry Part III: RT Calibrations Using BB Sources


Howard W. Yoon

Howard W. YoonHoward Yoon is the Group Leader of the Optical Radiation Group in the Sensor Science Division at NIST.  His group is responsible for both source and detector standards from the vacuum UV to the thermal infrared wavelength regions. He is also the US national representative for thermometry on the Consultative Committee for Thermometry (CCT) at the BIPM and is a long-standing member of the CCT working group on non-contact thermometry.  He has authored or coauthored over 130 technical publications, mostly in the areas of spectroradiometry and radiation thermometry.  He has three US patents and one pending patent application. He has twice won the NIST Astin award for measurement science and was also the recipient of the Department of Commerce silver medal for scientific achievement. He received his Ph.D. in solid-state physics specializing in optical spectroscopy from the University of Illinois at Urbana-Champaign.

Weston Tew

Weston TewWeston Tew has held the position of staff physicist in the NIST Sensor Science Division since 2011 working on special applications in temperature measurement, new fixed points, high-temperature thermocouples, 3D thermomagnetic imaging, consensus standards and conformity assessment. From 1993-2010 he served as a staff physicist in the NIST Process Measurements Division working on temperature sensors and interpolation, cryogenic fixed points, noise thermometry, and isotopic effects in phase equilibria. He is a former National Research Council postdoctoral Associate at NIST where he performed research on quantum-based current sources and the Kibble balance. Dr. Tew is an author/co-author of over 85 papers on these subjects and holds two patents. Prior to his work at NIST, Tew worked as a guest researcher at the BIPM in Sevres France. He is a recipient of the US Department of Commerce Bronze Medal and the ASTM Award of Merit. Dr. Tew is a member the International Electrotechnical Commission, Working Group 5 on Temperature Sensors of the IEC subcommittee 65B. He is also a Fellow of the ASTM and Chair of the subcommittee E20.07 on Temperature Measurement Fundamentals. 

Chris Meyer 

Chris MeyerChris Meyer has 30 years of metrology experience working at NIST in the areas of temperature, humidity, and pressure standards. He is an honor graduate of Haverford College and received his Ph.D. in physics from the University of California at Santa Barbara. Afterwards, he came to NIST as a postdoc, performing acoustic thermometry to obtain some of the most accurate thermodynamic temperature measurements ever made over the range 234 K to 303 K. Dr. Meyer joined the NIST Thermometry Group (Now the Thermodynamic Metrology Group) in 1991. His first project was to construct a facility to realize the International Temperature Scale of 1990 (ITS-90) over the low-temperature region (0.65 K to 84 K) using 3He and 4He vapor-pressure thermometry, gas thermometry, and platinum resistance thermometry.  Since that time, he has worked in several other areas of thermometry, including wire thermocouples, digital thermometers, light-pipe radiation thermometers, and fluorescence thermometers. He has worked in the discipline of humidity since 2000. During this time, he helped develop the current NIST gravimetric hygrometer and the hybrid humidity generator (the US national standard for humidity).  He used the gravimetric hygrometer to validate the performance of hybrid humidity generators and measure thermophysical properties of moist air and moist CO2). Chris has operated the humidity calibration laboratory since 2013. Recently, he spent 15 months working at the International Bureau of Weights and Measures (BIPM), helping develop a manometric system for determination of the amount fraction of CO2 in air. In 2017 Chris entered pressure metrology and now oversees the NIST piston gauge calibration laboratory. 

Dawn Cross

Dawn CrossDawn Cross recently retired from the National Institute of Standards and Technology (NIST) after 40 years of service. Dawn was responsible for the Industrial Thermometer Calibration Laboratory (ITCL) calibration of industrial platinum resistance thermometers, thermocouples, thermistors, digital thermometers over the range of -196 °C to 550 °C. As part of her responsibility for the ITCL, Dawn maintained the NIST quality system documentation and measurement assurance to maintain compliance with the NIST Quality Manuals (QM) and ISO/IEC 17025;2017. Cross started being a NVLAP assessor in 2005 for NIST and 2008 for outside laboratories, and now does contracting work with NVLAP. 

When she was not performing calibrations, Cross performed temperature research related to the uncertainty of industrial thermometer calibrations and finding alternatives to Hg-in-glass thermometers. Additionally, Dawn performed NIST technical assessments covering the areas of temperature (contact and non-contact), ceramics, pressure and vacuum, and fluid flow.   

To maintain visibility and protect the interests of NIST and U.S. industry, she served on several national standard committees within ASTM E20 (Thermometry) and committees within NIST. She was the Sub-Chairman for ASTM E20.03 Resistance Thermometers Sub-Chairman for ASTM E20.05, Liquid in Glass Thermometers and Hydrometers, and a member of ASTM D.02 Petroleum Committee.  

Cross has taught courses at the Measurement Science Conference (MSC) Symposium, 2010, 2011, 2013, 2015, 2016, 2017, 2018, 2019, 2022 covering SPRT’s, LiG’s, PRT’s, Thermistors, and thermocouples. 

Cross started at the Measurement Science Conference Symposium in 2010 teaching Thermometry.  She became the NIST Liaison in 2015.  She was the Vice President in 2019 and the President in 2020, and the Chairman of the Board, 2021 and 2022.  Currently she is serving as the Administrative/Secretary for the Committee and the Vice President.  She is also the Secretary for the International Temperature Symposium 10 (ITS10).  She has served in that capacity for 4 terms. 

Karen Garrity

Karen GarrityKaren Garrity has performed thermocouple calibrations and research in the NIST thermocouple laboratory for 22 years.  Her duties include calibrations of noble metal thermocouples, base metal thermocouples, and refractory metal thermocouples by comparison and fixed-point methods. She is also responsible for building freezing-point cells for the laboratory. She has led several international thermocouple comparisons as well as providing thermocouple NVLAP proficiency tests. She has published papers on thermocouple performance and uncertainties, thermocouple comparison, and improved furnace designs. She actively participates in ASTM (American Society of Testing and Materials). She has taught at the SIM Metrology School and at the NIST MSC tutorials on the use of thermometers. She is a technical assessor for the NIST Sensor Science Division.