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Topic: Kenyan 434 (4 msgs / 79 lines)
1) From: Tim Wat
Just roasted 3/4 lb. of SM Kenyan lot 434 in my new frankentop (SC/CO) 
roaster.  Tried as best I could with the K-type thermocouple I bought 
from SM to follow Don Cummings suggestions about cycling the heat on and 
off (yes, the CO top is a Supentown). 
All said, I think I went to FC rather than C+...admitedly, I find it a 
little hard from those pix on the SM site to distinguish between C+ and 
FC, maybe it's just me.
Planning to let the beans rest for a day or 2, but had to brew up two 
cups in the FP.  Man, there is so much going on in the fragrance coming 
off the cup, and just a multitude of different flavors on the palate.  A 
whole lot of shaking going on, as the old song goes.  Am hoping resting 
a couple more days will reveal even more.
A question - I stuck the K-type into the air under the lid (I don't have 
a spacer constructed yet).  It promptly melted the small blue plastic 
ring on the lead, so I removed the remains and stuck it back into the 
air above the beans.  But now the white/blue braided covering is pretty 
scorched, and I'm not sure if it will eventually melt.  Is it okay for 
the braid to get scorched? 
Tim

2) From: Scot Murphy
On Sep 23, 2006, at 5:06 PM, Tim Wat wrote:
<Snip>
I'm 99.9999% sure it's fine. Mine is scorched and I still get good  
readings. (At least, I *think* they're good. I can't tell 375F from  
380F by touch.)
Scot "blisters are blisters, five degrees or no" Murphy

3) From: George Birchard
The insulator can't take the heat, but the metal in the thermocouple 
can. Mine agrees with room air digital thermometer and approximates temp 
settings on roaster at air temp about 72F.
Scot Murphy wrote:
<Snip>

4) From: raymanowen
The precision of measurement with a thermocouple relates completely to the
temperature of the electrical junction of the two t/c wires.
The smaller the gauge of the wires and the smaller the actual physical
junction, the less heat will be conducted away from the junction, and The
Faster It will Respond to actual temperatures and changes.
That latter is not all good. Have you ever tried to read rapidly changing
measurements with a digital meter? It wasn't pretty.
The blue thermoplastic insulating sleeve is useless- I think it leaves at
about 400 F. The braided fiberglass insulation turns white around 1800=
F, I
think. Way higher than coffee roasting apparatus generates, but well within
the specifications of Type K thermometry.
99.44% sure.
Cheers -RayO, aka Opa!
What does Omega Engineering say?
On 9/23/06, Scot Murphy  wrote:
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