Roast and Learn Together - Terms and Definitions - Page 2
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- Posts: 357
- Joined: 11 years ago
Here is a blast from the past...
farmroast wrote: ACRONYMS:
BT--Bean Temperature: as measured by thermocouple or thermometer in the bean mass.
ET--Environmental Temperature: The environmental/air temperature in or around the roast chamber that relates to the average temperature the beans are being exposed to at a particular point in the roast.
MET--Maximum Environmental Temperature: The maximum environmental temperature the beans are exposed to in the roast environment. Can also refer to the maximum ET the beans are exposed to during the roast.
RoR-- Rate of Rise of BT degrees(C or F) rise/time(usually per minute)
RoC-- Rate of Change of ET, positive or negative.
TC--Thermocouple: A digital thermometer with a wire and probe or wire that is bare at the end with a bead tip or wrapped.
TC4-- A Arduino based roast monitoring and controlling device developed by the homeroasting community TC4
WP-- Wet processed coffee
DP-- Dry processed coffee
TERMS:
Drop temperature: The ET at the time the beans enter the roaster.
Turnaround Temperature: The BT reading at the point after the beans are dropped when the BT reading begins to increase/turnaround after dropping from the preheat temp.
Dump: The point when the roast ends.
Warming Phase: The initial phase of heat being applied to the beans.
Drying Phase/Stage: The first part of the roast where the beans are dried to the proper level.
Ramp Phase/Stage : The phase/stage after the drying up to 1st crack where the heat applied is generally increased. Maillard reactions are occurring and then sugars.
First Crack: A popping sound similar to popcorn where moisture is released
Second Crack: A snapping sound similar to rice krispies where co2 is released
Conduction: Heat applied by direct contact
Convection: Heat applied by air
Radiant: Heat applied by radiance off of a surface, heating element, infra red heat
Exothermic: Where the beans are releasing heat energy
Endothermic: Where the beans are absorbing heat energy
- Boldjava (original poster)
- Posts: 2765
- Joined: 16 years ago
Thanks Paul.
Farm, with your OK, I am going to integrate your work into the first post. Have one master set of def's.
B|Java
Farm, with your OK, I am going to integrate your work into the first post. Have one master set of def's.
B|Java
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LMWDP #339
LMWDP #339
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- Posts: 357
- Joined: 11 years ago
I should have reached out to Ed before I posted... My mistake. I'm going through older topics here, and came across this one. Thought, well this is a nice find considering this recent post.
- TomC
- Team HB
- Posts: 10559
- Joined: 13 years ago
Just a general observation/question. It will likely not sit well with everyone, so I doubt it would be universally adopted, but I imagine it would be a lot easier going thru profiles and posts reading cupping notes, etc, if we used one temp or another, instead of half of us using Fahrenheit and the other half using Celsius. Problem is, there's good arguments for using both.
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- another_jim
- Team HB
- Posts: 13966
- Joined: 19 years ago
Complete confusion is best -- my ET dial is in F, and BT dial in C.
Jim Schulman
- TomC
- Team HB
- Posts: 10559
- Joined: 13 years ago
You're so analogue
Join us and support Artisan Roasting Software=https://artisan-scope.org/donate/
- farmroast
- Posts: 1623
- Joined: 17 years ago
sorry, just reading this thread. If we want to update/add to my list in the Roasting,FAQs and Favorites section then just work them out here and I'll edit them in.Boldjava wrote:Thanks Paul.
Farm, with your OK, I am going to integrate your work into the first post. Have one master set of def's.
B|Java
still kinda on the fence with jim's CCIB acronym
farm
LMWDP #167 "with coffee we create with wine we celebrate"
- boar_d_laze
- Posts: 2058
- Joined: 17 years ago
A few things:
1. Before adopting Farm's lexicon:
2. Centigrade to Farenheit, and vice versa:
1. Before adopting Farm's lexicon:
- "Charge" is the usual term for beans in, not "Drop;"
- "Drop" is the usual term for beans out, not "Dump;" and
- "Charge" and "Drop" are respectively the terms used in Artisan for in and out.
2. Centigrade to Farenheit, and vice versa:
- C = 5/9 x (F - 32);
- F = (9/5 x C) + 32; and for the absolutists among us
- K = C + 273.
Drop a nickel in the pot Joe. Takin' it slow. Waiter, waiter, percolator
- SAS
- Supporter ❤
- Posts: 322
- Joined: 14 years ago
Yesterday I got tired of converting each Farenheit to Centigrade, so I made a spreadsheet and printed it as a PDF file. It covers the ranges of BTs and METs, start to finish, and a bit more.
If you want to have a copy for yourself, just save it to your device of choice. Enjoy.
Temperature Chart: F to C
If you want to have a copy for yourself, just save it to your device of choice. Enjoy.
Temperature Chart: F to C
LMWDP #280
Running on fumes.
Running on fumes.
- Boldjava (original poster)
- Posts: 2765
- Joined: 16 years ago
Nice job. It would be great if the US got with the program and joined the rest of the world with Centigrade.SAS wrote:Yesterday I got tired of converting each Farenheit to Centigrade...
https://dl.dropboxusercontent.com/u/242 ... 0CHART.pdf
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LMWDP #339
LMWDP #339