ISA Interchange

Welcome to the official blog of the International Society of Automation (ISA).

All Posts

Book Excerpt + Author Q&A: Measurement Uncertainty

This ISA author Q&A was edited by Joel Don, ISA’s community manager. ISA recently published the fifth edition of Measurement Uncertainty: Methods and Applications by Ronald H. Dieck. In this Q&A feature, Ronald highlights the importance of the book's new and enhanced content. Click this link to download a free 39-page excerpt from the fifth edition of Measurement Uncertainty.

EDITOR'S NOTE: As an added bonus, this author Q&A includes a free download of the Uncertainty Analysis Template, a tool for engineers and scientists containing the major equations and summations used in estimating measurement uncertainty, errors and uncertainties that affect results.  

Q. What prompted you to publish an updated edition of your popular book?

A. The technology of measurement uncertainty analysis has improved over the past several years and these improved methods needed to be included in a new edition. The new book also includes several worked-out uncertainty experiments as well as several new appendices dealing with the specifics of equations and uncertainty analysis methods.       

Q. Your book is now in its fifth edition. Why do you think the subject matter of this book continues to be relevant and important as a reference resource?

A. Uncertainty analysis and methods are continuously improving. There's still a need for a well-organized and presented book for properly analyzing the uncertainty of test and experimental data. 

Q. What prompted you to publish an updated edition of your popular book?

A. The technology of measurement uncertainty analysis has improved over the past several years and these improved methods needed to be included in a new edition. The new book also includes several worked-out uncertainty experiments as well as several new appendices dealing with the specifics of equations and uncertainty analysis methods.       

Q. Your book is now in its fifth edition. Why do you think the subject matter of this book continues to be relevant and important as a reference resource?

A. Uncertainty analysis and methods are continuously improving. There's still a need for a well-organized and presented book for properly analyzing the uncertainty of test and experimental data. 

Blog Author Q&A Free Bonus! Click this link to download a free 39-page excerpt from the fifth edition of Measurement Uncertainty: Methods and Applications.

Q. What makes this fifth edition different or more valuable than the fourth edition? What new content has been introduced and what areas have been improved?

A. The fifth edition features new appendices and more detailed examples with each uncertainty analysis and computation clearly described. The new appendices include condensed descriptions of the basics of uncertainty analysis, pinpoint the advantages and disadvantages of several uncertainty models used throughout the world, and provide key equations for uncertainty analysis-all in an easy-to-use format. The updated book also incorporates:

  • A discussion of new uncertainty technologies in US and international standards, and their strengths and weaknesses
  • A discussion of the rationale for selecting a given uncertainty model, ISO or ASME
  • An abbreviated approach to uncertainty estimation
  • A more complete overview of the important equations in uncertainty analysis

New and enhanced content has been introduced on the following topics:

  • The basics of the measurement uncertainty model
  • Nonsymmetrical, systematic standard uncertainties
  • Random standard uncertainties; the use of correlation
  • Curve-fitting problems
  • Probability plotting
  • Combining results from different test methods
  • Calibration errors
  • Uncertainty propagation for both independent and dependent error sources

FREE BONUS: Download the Uncertainty Analysis Template

There are many ways to conduct an uncertainty analysis. One way is illustrated in the Uncertainty Analysis Template, an Excel spreadsheet in Appendix N of Measurement Uncertainty, Fifth Edition. The Uncertainty Analysis Template is designed as a starting point for engineers and scientists to use to perform an uncertainty analysis. It contains the major equations and summations used in estimating measurement uncertainty, errors and uncertainties that affect results, ASME random and systematic categories, and ISO pedigree categories Type A (from statistical analysis) and Type B (obtained other ways).

 

Meet The Author
Ronald H. Dieck is an ISA Fellow and president of Ron Dieck Associates, Inc., an engineering consulting firm in Palm Beach Gardens, Fla. He has more than 35 years of experience in measurement uncertainty methods and applications for flow, temperature, pressure, gas analysis, and metrology, and the testing of instrumentation, temperature, thermocouples, air pollution, and gas analysis. Dieck is a former president of ISA (1999) and the Asian Pacific Federation of Instrumentation and Control Societies (2002). He has served as chairman of ASME PTC19.1 on Test Uncertainty for more than 20 years. From 1965 to 2000, Dieck worked at Pratt & Whitney, a world leader in the design, manufacture, and service of aircraft engines and auxiliary power units. He earned a bachelor of science degree in physics and chemistry from Houghton College in Houghton, N.Y., and a master's degree in physics from Trinity College, Hartford, Conn.

Connect with Ronald
LinkedIn

Joel Don
Joel Don
Joel Don is the community manager for ISA and is an independent content marketing, social media and public relations consultant. Prior to his work in marketing and PR, Joel served as an editor for regional newspapers and national magazines throughout the U.S. He earned a master's degree from the Medill School at Northwestern University with a focus on science, engineering and biomedical marketing communications, and a bachelor of science degree from UC San Diego.

Related Posts

Newsweek Vantage Report on Cyber Risks to Critical Infrastructure: ISA's the Expert Partner

Newsweek Vantage recently published an independent report on cyber risks to critical infrastructure—and t...
Kara Phelps Mar 24, 2020 3:11:27 PM

Auto Manufacturers Could Build Ventilators: The Power of Standards in a Global Crisis

As COVID-19 shutters manufacturing plants in North America and around the world, GM, Ford, and Tesla are ...
Kara Phelps Mar 19, 2020 1:49:27 PM

Leveraging Technology to Work in the Age of Uncertainty

Globalization has been a very successful strategy for many businesses. Distributing the supply chain acro...
Contributing Author Mar 18, 2020 5:00:00 AM