HomeRoast Digest


Topic: data logging thermocouple (9 msgs / 141 lines)
1) From: Aaron Boothe
I'm looking for a data logging thermocouple that doesn't cost an arm and a
leg.  I just want to be able to keep accurate records for developing roast
profiles.  I'm roasting with a Poppery 1 with the outer heating coil on a
dimmer switch.  My current thermocouple goes through the side wall and into
the roasting chamber.  I am basically measuring the air temp directly above
the beans.  Anyone have any ideas?  Thanks.
Aaron B

2) From: Michael Dhabolt
Aaron,
'Arm and a leg' is a pretty relative thing when looking at datalogging
TC thermometers.  I decided on the Extech model 421509, it is a dual
(two TC's) which allows doing some comparative analyses, has a data
port to allow downloading data to your PC and/or monitoring in real
time using some included fundamental (definitely not high end)
software and can use any of the more popular TC types.  It is not a
Fluke, but it only costs half as much - $150 to $170 range on-line.
I've had mine for a year or so and been satisfied with the instrument.
Mike (just plain)

3) From: stereoplegic
good to know. i've seen a few of those come up on eBay (right know, just 
looking for the cheapest digital-temp-reading solution for my roaster 
contest entry, but someday...)
michael.dhabolt wrote:
<Snip>

4) From: Michael Dhabolt
For straight temp indication, you can't hardly beat the TC thermometer
that Tom sells (Digital Thermometer with thermocouple: $29.90).  I've
had one of these for several years, without a hickup.
Mike (just plain)

5) From: Greg Scace
TTI Global has some pretty inexpensive dataloggers.
Nice folks and very helpful.    www.ttiglobal.com
-Greg
At 01:42 AM 6/29/2007, you wrote:
<Snip>

6) From: Aaron Boothe
Thanks a bunch for the info.  Thats exactly what I'm looking for.
Aaron

7) From: Homeroaster
Oooooh...bells and whistles.
I remember going to Barry Jarrett's post-Christmas party one year and seeing 
where he had hooked up a steam whistle to one of his basement espresso 
machines.  Way cool.  All he needed was bells. ::grin::
*********************
Ed Needham
"to absurdity and beyond!"http://www.homeroaster.com(include [FRIEND] in subject line to get through my SPAM filters)
*********************

8) From: Tom & Maria - Sweet Maria's Coffee
I'm looking for a data logging thermocouple that doesn't cost an arm 
and a leg.  I just want to be able to keep accurate records for 
developing roast profiles.  I'm roasting with a Poppery 1 with the 
outer heating coil on a dimmer switch.  My current thermocouple goes 
through the side wall and into the roasting chamber.  I am basically 
measuring the air temp directly above the beans.  Anyone have any 
ideas?  Thanks.
Aaron B
I use an Extech with 2 thermocouple inputs, as Michael mentioned.  it 
was about 200 bucks at the time, less now. It logs well, transfers to 
a PC easily.
Tom
--
                   "Great coffee comes from tiny roasters"
            Sweet Maria's Home Coffee Roasting  -  Tom & Maria
                      http://www.sweetmarias.com                Thompson Owen george_at_sweetmarias.com
     Sweet Maria's Coffee - 1115 21st Street, Oakland, CA 94607 - USA
             phone/fax: 888 876 5917 - tom_at_sweetmarias.com

9) From: J.W.Bullfrog
Once you hvae good equipment, probe placement is really critical. In my P1,
I have great placement. In my turbo wok, I get the same reading
anyplace tried, no matter where I am in the roast.
While the turbo wok does a pound of green, basically set and forget. Forget
profiling. No finess available. Just move the end time from about 15
to 17.5minutes.
On 6/29/07, Tom & Maria - Sweet Maria's Coffee 
wrote:
<Snip>
-- 
I've seen things you people wouldn't believe.
Attack ships on fire off the shoulder of Orion.
I watched C-beams glitter in the dark near the Tannhauser gate.
All those moments will be lost in time, like tears in rain.


HomeRoast Digest