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Thread: Temperature Probe for Corretto

  1. #1
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    Temperature Probe for Corretto

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi there,
    Im preparing to do my first roast using the Corretto method. *After looking at various ways to roast coffee without buying an expensive machine, this one seems to show the most promise. *Also, where I live, the winters can be fairly cold and maybe the Corretto can be used year around?
    I noticed some folks have digital temperature readouts on their setups, *but am wondering how it is done. *Where does the probe lie within the machine? *Is it located in the heating element area of the bread machine or actually into the basket? *Thanks for your help. *
    I think my time zone is about 17 hours behind this one, so I may not be responding in synch.

    Jon

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    Re: Temperature Probe for Corretto

    I use a digisense thermocouple I picked up on ebay for about $25. It was a little tricky drilling the holes through the bread machine and the loaf pan. Pick a spot where the probe wont be hit by the turning paddle. I use a little velcro on the outside part of the probe to keep it from getting kicked out through the hole. Also make sure to pull out the probe before you pull the beans.

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    Re: Temperature Probe for Corretto

    I use the USB DMM available here at coffee snobs from the beanbay.
    If you grab the software associated withit then its a very useful tool for keeping track of your roast profiles.

    Mal

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    Re: Temperature Probe for Corretto

    There are a vast number of ways you can monitor temperature. Some considerations are the probe type (solid metal shaft vs thermocouple), accuracy (i.e. calibration), drift over time, and response time. Location on where the probe is mounted also is a concern for usable data, and should be considered when looking at probes to purchase.

    Most people choose a digital multimeter (which is semi independent from the probe itself) to provide them with instantaneous readings as the response time from when a temperature change occurs to when it actually is shown on the meter is very quick. By comparison an oven thermometer is much slower.

    First of all, I would recommend you reflect on what you want to get out of your data. Do you plan to use it to have a little more data on the roasting process? Do you plan to profile your roasts and make real-time adjustments, and then follow up each roasting session analyzing the data along with what happened during the roast. Following that up with tasting sessions is another length.

    Depending on what you want, your needs may vary. Of course if you think you might want to upgrade, or in the future might want a certain functionality (such as real-time computer logging)...you may decide to just get the best to start with and not have to worry much about the lower alternatives.

    I think bolbs suggestion is good if you think you might want to use the functionality now or at some point in the future. If not, a standard "candy" thermometer might serve you just fine for a while.

  5. #5
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    Re: Temperature Probe for Corretto

    Yes the corretto can be used all year round.
    But in summer its best to roast in the cool of the night.

    Quote Originally Posted by 0E2B2A1B032D253620440 link=1245296676/0#0 date=1245296676
    I think my time zone is about 17 hours behind this one, so I may not be responding in synch.
    I know WA is a little bit behind but not 17 hours.
    CS is based in VIC.

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    Re: Temperature Probe for Corretto

    Thanks for all the great info. Looks like I will want a thermocouple to get a quick feedback on temp change. Maybe the one on ebay will suit my needs, but the USB DMM is very nice.
    I wonder if anyone uses an analog probe via the drilled hole into the bean bucket. Would it give fast enough response to control the roast? Thanks.

    Jon

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    Re: Temperature Probe for Corretto

    Regarding my time zone, I posted at 8:44pm PST (Pacific Standard Time) on June 17 which was 1:44pm CS time on June 18. I think thats about 17 hours difference.

    Jon

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    Re: Temperature Probe for Corretto

    TG,

    Although Walla Walla sounds like an aboriginal name, if you google walla walla, WA, youll actually find its Washington, United States, not Western Australia.

    Yeah, it got me too.

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    Re: Temperature Probe for Corretto

    Now theres a trap for young players (and old ones too).

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    Re: Temperature Probe for Corretto

    Sorry guys, not meant to be a gotcha. Walla Walla is an American Indian name. Walla means water and Walla Walla means many waters. We do have a lot of small creeks and rivers as it sits at the base of the Blue Mountains.
    Walla Walla is a town of about 30,000 known for its sweet onions and now pushing hard to become a destination wine producing area, like an early version of Napa Valley in California.

    Jon

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    Re: Temperature Probe for Corretto

    Gee - you people didnt watch enough Bugs Bunny when you were younger!

    Walla Walla, Washington made MANY appearances in the cartoons.

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    Re: Temperature Probe for Corretto

    Quote Originally Posted by 527776475F71796A7C180 link=1245296676/5#5 date=1245347878
    Thanks for all the great info. *Looks like I will want a thermocouple to get a quick feedback on temp change. *Maybe the one on ebay will suit my needs, but the USB DMM is very nice.
    I wonder if anyone uses an analog probe via the drilled hole into the bean bucket. *Would it give fast enough response to control the roast? *Thanks.

    Jon
    Thermocouple is a flexible wire that has a junction of two dissimilar metals. A probe should be a solid metal rod that youd have to drill all the way through the breadmaker if you wanted it perma mounted.

    All of these probes are analog output that are read with a digital device, but maybe by "analog probe" you mean one with just a dial like a candy thermometer? Ive heard that people use them with poppers, so at the worst you can try one out as they are pretty cheap.

  13. #13
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    Re: Temperature Probe for Corretto

    Quote Originally Posted by 656277616C7A5C323A3A3A030 link=1245296676/10#10 date=1245387249
    Gee - you people didnt watch enough Bugs Bunny when you were younger!

    Walla Walla, Washington made MANY appearances in the cartoons.
    That rings a bell but "Walla Walla WA" doesnt sound the same when you read it.

    Quote Originally Posted by 496C6D5C446A627167030 link=1245296676/9#9 date=1245386622
    Sorry guys, not meant to be a gotcha.Walla Walla is an American Indian name.Walla means water and Walla Walla means many waters.We do have a lot of small creeks and rivers as it sits at the base of the Blue Mountains.
    Sorry Jon but the Blue Mountains are a range just to the west of Sydney.
    Ours are named because the eucalyptus oil in the air gives it a blue tinge.

    Some quick research shows that the first overland crossing from the east to the Pacific coast was in 1793.
    The Columbia river was discovered from the west coast in 1791.

    The first unsuccessful white crossing of our Blue Mountains was attempted in 1789 (1 year after the colony was established).
    Looks like we may have named ours Blue about 3 years before you lot. *;)

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    Re: Temperature Probe for Corretto

    Quote Originally Posted by 5864796268697E6B63680C0 link=1245296676/12#12 date=1245396638
    fatboy wrote on Yesterday at 10:54pm:
    Gee - you people didnt watch enough Bugs Bunny when you were younger!

    Walla Walla, Washington made MANY appearances in the cartoons.
    That rings a bell but "Walla Walla WA" doesnt sound the same when you read it.
    I had a laugh My mum went to high school in Walla Walla Washington! Too funny! :D



    Java "Walla Walla what?" phile

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    Re: Temperature Probe for Corretto

    Walla Walla so water water, sure it wasnt named after some bloke with a stutter of hard of hearing?? ;D

    Im with you TG, i automatically assumed aus and not the world option even though the internet brings the world to my door.

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    Re: Temperature Probe for Corretto

    WITCH DOCTOR
    (Ross Bagdaserian Jr.)

    David Seville - 1958

    Also recorded by:
    AC Rock; Joanie Bartels; Cartoons DK; The Chipmunks;
    Devo; Hit Crew; Don Lang; Sha Na Na; Tombstones.


    I told the witch doctor
    I was in love with you
    I told the witch doctor
    I was in love with you
    And then the witch doctor
    He told me what to do

    He said that

    Ooo eee,ooo ah ah ting tang
    Walla walla, bing bang
    Ooo eee ooo ah ah ting tang
    Walla walla bing bang...

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    Re: Temperature Probe for Corretto

    Droshi,
    I guess Im a little confused by the terminology. *The usb dmm shows a solid looking probe, but is referred as a thermocouple. *But youre right, I was thinking of a dial indicator as analog.

    Thundergod,
    Our Blue Mountains were named for the same reason as yours ..... because they look blue from the distance. *However, we burned off all our eucalyptus trees and planted firs and spruce ..... much prettier. * * * [smiley=grin.gif]

    Jon

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    Re: Temperature Probe for Corretto

    Hi Jon,

    http://en.wikipedia.org/wiki/Thermocouple

    That should show what a thermocouple is. But some people might use the terms interchangeably.

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    Re: Temperature Probe for Corretto

    Quote Originally Posted by 14223F233839500 link=1245296676/11#11 date=1245388846
    All of these probes are analog output that are read with a digital device, but maybe by "analog probe" you mean one with just a dial like a candy thermometer? Ive heard that people use them with poppers, so at the worst you can try one out as they are pretty cheap.
    Could try one of these "Mal" thermometers. *;D
    http://www.aldi.com.au/au/html/offers/2827_8968.htm

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    Re: Temperature Probe for Corretto

    Hi Jon ....

    If you want the most basic Thermometer with Thermocoupling *ebay has them cheap with a solid probe....This is what I bought , nowhere near as good as the BeanBay ones , but definitely enough for me to get started .....( get the solid probe...xtra$10 )



    All the best


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    Re: Temperature Probe for Corretto

    I use the wire bead type, a small tent peg and a piece of timber to hold the peg so that it dangles from the top. The t/c wire is tied to the peg with tie wire and the base of the peg is cut to about 15mm above the base of the BM. The timber also serves to hold some heat in the bowl, but best of all, no drilling required in the BM. I had a picture here somewhere, Ill see if I can find it.

    Cheers.

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    Re: Temperature Probe for Corretto

    Like this.....

    http://coffeesnobs.com.au/YaBB.pl?num=1216735141/17#17

    Cheers

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    Re: Temperature Probe for Corretto

    Hi PhilMac,
    Great pictures. I might try the same way. Just looked at my machine and see where I could maybe press fit the wood piece inset to the oven opening and then attach a larger overlapping piece to rest it on the top frame of the machine forming a lip around the inset piece. I hope that makes sense. This would keep the movement to a minimum, if thats a problem. I think you mentioned yours did not move around much in one of your posts.
    Thanks for sharing a great idea.

    Jon

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    Re: Temperature Probe for Corretto

    I did this, drilled a 6mm hole through the plastic part of the BM, then a 3.5mm hole into the Basin, i placed a bit of that stuff you put in brick walls to screw into......cant remember the name of it.....and pushed the probe through that and into the 3.5 mm hole in the basin, it protudes about 15mm into the basin itself.


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    Re: Temperature Probe for Corretto

    It looks like aliens are probing youir bread machine.

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    Re: Temperature Probe for Corretto

    Quote Originally Posted by 5E5A7C6565607F6867090 link=1245296676/23#23 date=1246338374
    i placed a bit of that stuff you put in brick walls to screw into......cant remember the name of it..... *
    A rawlplug (or screw anchor, or wall plug)?


    /edit Interesting. Had to link to wikipedia image as Ubuntu/Firefox doesnt seem to interact with attachments on Coffeesnobs properly

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    Re: Temperature Probe for Corretto

    Behmor Coffee Roaster
    Quote Originally Posted by 1530310018363E2D3B5F0 link=1245296676/22#22 date=1246336864
    Hi PhilMac, ....I think you mentioned yours did not move around much in one of your posts.....
    Jon
    Hi Jon,
    Im not sure it was my idea, but it works well Mine moves a little bit, and I guess I should put a couple of small pieces of wood on the underside parallel to the insides of the bowl which would stop it, but it all works ..... Just dont cover the opening altogether, the chaff needs to get out somewhere and be blown away by the fan.

    Cheers



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