Understanding Roast Color

Taking the color of a roast is quite simple nowadays. Just prepare a sample and point your roast color meter at it. The device will display the roast color as a number. This may raise some questions.

• Why do different devices report different results on the same roast?
• What does the reported number mean and how does it compare?
• Why does the same device report different numbers for the same roast?

This post resembles our report On Idle Noise, where we identified the sources of temperature measuring noise and quantified their impact. This post shares our observations from over 1000 color measurements taken with Tonino and Lighttells CM100+ roast color meters. Our results can help answer the above questions and may lead to better color measurements.

Artisan v2.8.2

This is a maintenance release which fixes some regressions discovered in v2.8.0 and gives the Designer some love.

Artisan v2.8.0

Time for an update! With added support for the between batch protocol and the addition of a phases widget to the Comparator this release focus on repeatability and consistency in roasting. It also comes with many smaller improvements and updated translations.

Artisan v2.6.0

 

We dedicate this release to the constructive ones, the creatives, the makers, the innovators, the open ones, the integrators, the ones that lead us forward to make this a better planet for all of us and put the destructive ones, the duplicators and obstructors to shame.

Probat POP UP

Marko got invited by Probat to join their POP UP series on YouTube. This one is on NORM ROAST, a protocol for determining emission levels and energy consumption of roasting machines.

In this live session, Marko reports why he initiated this project and what the outcomes so far are. Together with you and Probat he puts this theory into practice.

Find more details on this and other events under News on the Artisan homepage.

Navigating Artisan

We’ve got invited by Royal Coffee to hold an online workshop on Artisan. In this webinar Dave will show you how to access the wealth of information available in Artisan graphs. Whether during an active roast or reviewing a completed roast, Artisan has features to speed your work.

Find more details on this and other events under News on the Artisan homepage.

Probe Arrays

There are a number of reasons why using an array of probes to measure temperatures inside a roasting machine, instead of using single probes, seems to be a good idea. The intrinsic redundancy of probe arrays allows a machine to handle probe failures silently and to report them early on to the operator, avoiding down time. Another advantage is using averages of all readings per sampling time. This increases the stability compared to single probes. Averaging of readings gathered in parallel avoids also the main disadvantage of common software based smoothing, the introduction of delays caused by averaging readings gathered sequentially. Are probe arrays worth it?