INTRODUCTION Performing a repeatability test is an essential part of estimating uncertainty in measurement. It is the most common experiment performed to collect Type A Uncertainty data. Additionally, most accreditation bodies require that you include repeatability data in your uncertainty budgets. However, many people have trouble with performing a repeatability test. They do […]
Introduction Have you ever wondered what sources of uncertainty in measurement to include in your uncertainty budget? I have, and I am sure that you have too. Today, I am going to show you 7 sources of uncertainty that should be included in every uncertainty budget. The reason you should include these uncertainty […]
Introduction Every laboratory needs an uncertainty calculator if they plan to get ISO/IEC 17025:2017 accredited. According to section 7.6 of the ISO/IEC 17025:2017 standard, every testing and calibration laboratory must evaluate measurement uncertainty and include all contributions considered to be significant. This means that you need to estimate uncertainty and create uncertainty budgets […]
Introduction Estimating uncertainty can be a difficult task, especially if you are a beginner. Tools like an uncertainty budget or calculator can really make a big difference. However, software to calculate uncertainty is typically outdated, expensive, and difficult to learn. Many people have problems because they do not know what to do or where […]
Introduction Have you ever considered using sensitivity coefficients when estimating measurement uncertainty? Maybe you have seen sensitivity coefficients used in an uncertainty budget and wondered why they were used or how they were calculated. If you answered yes to any of the above statements, this guide is for you. Today, you are going to learn […]
Each month, I write one or two articles and post them on my blog. My goal is to appeal to my readers and gain new subscribers. If not, what reason would I have for a blog! Last year (i.e. 2014) was a good year for me. It was a busy year! However, I still made […]
Hello. I am a Metrologist and consultant who loves to calculate measurement uncertainty for calibration and testing laboratories. Learn more about me here.
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