Traceable calibration needs to be done before the FIRST significant measurement is attempted. Otherwise you have little assurance of a way to reproduce results. Recommended reading is Traceable Temperatures, 2d Ed by Nicholas & White (Wiley 2001). It's much more about measurement reliability than it is about temperature measurement.
What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Are the design challenges the same as with embedded systems, but with a little developer- and IT-skills added in? What do engineers need to know? Rick Merritt talks with two experts about the tools and best options for designing IoT devices in 2016. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.