On 4/22/2013 3:45 AM, KPL wrote:
> I have no experience with any of these, as usually ds18b20 were good
> enough until now.

You can still use the ds18b20 with a bit of thought in the placement.=20
You attach a small piece of metal to the
source of heat you want to measure and attach the sensor to that metal.=20
The idea is to use the metal
  to lower the heat source to a temperature that is suitable for the=20
sensor. I didn't come up with this idea, I got
  it from my brother who works in appliance repair who said=20
manufacturers use this method quite a bit on
ovens because the lower temp at the measurement point allows for longer=20
sensor life than one exposed
  to constant high temps.   Some items like toasters don't even mount=20
the sensor to the heat source but
  place it on a board near the source,  as the source heats up the air=20
inside the enclosure the temperature
  is read that way.  You would need to determine the drop in temperature=20
from the heat  source to the
  mount point and add that to the final temperature calculation.


Mark




--=20
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