In this blog post, I want to share a webinar titled "Calibration uncertainty and why technicians need to understand it." This webinar was a collaboration with Beamex and ISA (International Society of Automation) subject matter experts.

It describes a practical approach to calibration uncertainty and  also provides real-life applications.

In some earlier blog posts, I have discussed temperature calibration and calibration uncertainty. This time I will be covering the different uncertainty components that you should take into account when you make a temperature calibration using a temperature dry block. 

Making a temperature calibration using a dry block seems like a pretty simple and straight forward thing to do, however there are many possible sources for uncertainty and error that should be considered. Often the biggest uncertainties may come from the procedure on how the calibration is done, not necessarily from the specifications of the components.

Let’s turn the heat on!

In this post we discuss the following scenario: You have done the calibration, have the results on the certificate and you compare results to the tolerance limits. It’s time to pop the big question: Is it a Passed or Failed calibration? Or is it In or Out of Tolerance?

Figure 1. Standard deviation

This is the second blog post (out of three) continuing on the subject of calibration uncertainty. In the first blog post we discussed the basics; how important it is to be aware of the uncertainty, short terminology and the classic “piece of string“ example.  If you missed the Part 1-blog post, you can find it in the below link. If you want to get all the parts at once, feel free to download the related full white paper from the link below.