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scott wrote:
>> the temparature readings seem rather suspect.
>
> Those IR thermometers work by assuming the object you're pointing at has
> a specific emissivity (which is hard-wired in on cheap models), and also
> a certain temperature of environmental radiation. Unless you set those
> two accurately for each thing you measure you'll never get an accurate
> temperature reading using IR.
I actually meant the readings from the *other* thermometer is rather
suspect. The readings from the IR thermometer agree with our validated
instrument.
(And yes, it's hard-wired to 0.95 thermal emissivity. Apparently it's
supposed to compensate for air temparature. And it won't work on "shiny"
surfaces. And also takes a moment or two to go from very hot to very
cold things...)
The environment meter has a temparature/humidity wand, and it dissagrees
with our validated thermometer by several degrees above or below. It
also seems to take a VERY long time for the reading to change.
On the other hand, the metal temparature probe that comes with it seems
more reliable. I haven't compared it to the validated instrument, but it
does at least seem to more or less instantly change reading when you
heat or cool it.
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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