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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