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Topic: IR Thermometer with HG (9 msgs / 201 lines)
1) From: Bill
I'm going to sound like a total moron with this post, but humility is good
thing...
I roasted three 20 oz roasts tonight with my HG/BBQ... I normally do 10 oz
roasts, have some things figured out there, but tonight I wanted to roast 3
pounds for some friends who are visiting tomorrow who don't have access to
any good coffee.
And yesterday my new toy arrived... a cheap IR Thermometer.  I hadn't
thought that an IR would work with a HG...I don't know why I thought that.
 But Brian Kamnetz indicated that he sometimes used one, so I thought, "why
not?"...  So I played with it tonight with my roasts.
The first 2 roasts, I was mainly just playing around, watching temps climb,
checking temp every minute.  However, by roast 3 I had some things figured
out, like that 1st crack started around 400 F... So just shy of 1st, I
dropped temps... but with the thermometer, I was still able to make sure
that I wasn't stalling the roast, and that the roast was still moving up,
just not 20 degrees per min...
So it moved into 1st crack, spent 4 minutes climbing slowly in temp, and I
pulled the beans at 435, a wonderful City+ roast of the Colombian Antioquia.
 So it was great...I was able to predict the roast progression much better,
and I was able to make sure that I was still applying the correct amount of
heat to the beans to continue the roast.
Wow!  That was fun, informative, and fun some more!!!  I think I'll learn
lots more now!
Thanks for the tip, Brian!  And I don't have to move my HG out of the way...
 I get really similar readings all over the surface of the bean mass, just
not right at the point where the HG is aimed...there it is much hotter.  But
I was REALLY surprised that the rest of the bean mass was so consistent.
Thanks for listening!
bill
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2) From: neal
That's great Bill. What thermometer did you use?
On Sat, Feb 23, 2008 at 11:29 PM, Bill  wrote:
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3) From: Alchemist John
That is the ONE thing I miss from my popper days when I had a 
thermometer embedded in the bean mass.  1st was 400 give or take a 
couple of degrees, day in day out.  Likewise 2nd was 454.  Smells and 
sight and experience are all great things and I love my roasts, but I 
am also a number geek.
Congrats.
At 23:29 2/23/2008, you wrote:
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John Nanci
AlChemist at large
Zen Roasting , Blending & Espresso pulling by Gestalthttp://www.chocolatealchemy.com/Homeroast mailing list
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4) From: Bill
Neal:
bought a MasterCool IR thermometer.  Don't know if it'll last long, never
heard of the brand before... but I didn't want to spend an arm & a leg on
something if I wasn't sure I'd like it... so got it for great price at
hardware store in town, and figured, "what the hey...?"
More reports to follow!
bill
On Sun, Feb 24, 2008 at 4:21 AM, neal  wrote:
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5) From: raymanowen
"Thanks for listening!"
Thanks for the explanation, Bill- very easy to follow. I guess Harbor Fright
sells a self-contained IR meter, and like the Glorious People's Orange HG,
it shows up on the discount sheet every so often.
The meter is battery operated. Just make sure you have a fresh battery in it
every few months, or it will read funny. Now I wanna try it.
I think I figured out the GPOrangeHG (the blue fire special-) My "110v" was
actually 125v - 126v, both at home and here at the apartment, a few blocks
away. Both areas were completed about 50 years ago. There's some commercial
renovation around here, but nothing new in the old subdivision. A
puzzlement.
Cheers, Mabuhay -RayO, aka Opa!
Got Grinder?
On Sun, Feb 24, 2008 at 12:29 AM, Bill  wrote:
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6) From: Bill
Ray, the thermometer is listed for 15 minutes operation.  I roasted 3
batches for roughly 15 minutes each.  I checked temperature every minute, so
actually I think I might need to replace batteries every 10 roasts.  It
depends on the display.  It displays temp (backlit) for 15 seconds-it
depends how much that sucks down the battery.  anyway, for someone who knows
nothing about electronics or batteries, 15 minutes continuous operation
seems pretty impressive for 2 AAAs...
if you try out a thermometer, make sure we hear about it!!
in my very limited experience with it (3 roasts last night) i was impressed
by the consistent temps...everywhere in the bean mass (except under the HG
nozzle) was within 1 degree.  And 1st crack occurred at the same temp on all
three roasts... i wasn't expecting it to actually be so consistent... we'll
see in the future.
bill
On Sun, Feb 24, 2008 at 10:46 PM,  wrote:
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7) From: raymanowen
The back lighting for the display likely consumes the most power. No
provision for supplementary power from a power adapter?
That really sounds neat- I wanna. -ro
On Sun, Feb 24, 2008 at 10:53 PM, Bill  wrote:
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-- 
"When the theme hits the bass, I dance the Jig!" - -Virgil Fox at the Mighty
Wichita (ex- NYC Paramount) WurliTzer- 1976
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8) From: Mike Chester

9) From: Bill
Mike, I appreciate the comments.  I was going for the moron point because so
many people on this list use temp as a way to observe roast, in addition to
the senses.  additionally, i think I was also feeling dumb because i hadn't
thought an IR would work for HG/DB roasting.  But yeah, I was feeling pretty
smart on that third roast.  I'm pretty excited about the possibility of
roasting tomorrow night and playing with some different applications of heat
on some roasts.  Thanks Mike!
bill
On Mon, Feb 25, 2008 at 8:53 AM, Mike Chester  wrote:
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