HomeRoast Digest


Topic: Thermapen (2 msgs / 61 lines)
1) From: Irene and Lubos Palounek
Is anybody on the list using a Thermapen digital thermometer for coffee
roasting? They make -58 to 572F models and several other models with
different tips -- which one are you using?
For more detail, see the following pages:http://www.thermoworks.com/products/thermapen/http://www.thermoworks.com/products/thermapen/tpen_home.html
Regards, Lubos
homeroast mailing listhttp://lists.sweetmarias.com/mailman/listinfo/homeroast

2) From: Rick Farris
Lubos wrote:
<Snip>
I have a Thermopen, but it's the worlds worst coffee roasting thermometer.
Rather than make you dig back through the archives, here's my answer from
the last time this was brought up:
-----------------------
Far from it.  I have one of those, and while it is definitely the worlds
best cooking thermometer, it's characteristics are completely at odds with a
good roasting thermometer.
First, a roasting thermometer needs to be able to get into a tight spot,
possibly around an obstacle or two.  The thermopen was designed to poke
holes in objects and go straight in.  A thermo*couple* thermometer at the
end of a twisted pair of wires is perfect for this.
Secondly, a roasting thermometer needs to have it's display at some distance
(as in a foot, or two, anyway) away from the hot spot it's reading, or be
able to sit in a very hot spot.  The thermopen can only be 5" away, and note
that it *cannot* sit in heat.  The electronics part is not shielded and
would spew inaccuracies and melt if it sat in, say, a 435 air stream for
long.  A thermocouple, on the other hand, can be six or eight feet away from
its display device, if necessary.
The thermopen is optimized for instant reading.  You pay a lot to get a
reading in just a few seconds.  Coffee roasting is characterized by
(relatively) slowly changing temperatures over times measured in minutes.
The thermopen shuts itself off after a couple of minutes, and the only way
to turn it back on is to close it and open it again, requiring the probe to
be removed from the roaster and re-inserted.  A thermocouple works perfectly
in this application.
I could go on, but I think you get my drift.  It was a good idea, though,
and I would not hesitate to recommend the thermopen for almost any other
kitchen task.  :-)
-----------------------
-- Rick
homeroast mailing listhttp://lists.sweetmarias.com/mailman/listinfo/homeroast


HomeRoast Digest