Address,

We have recently been measuring the exit temperatures of our layers 
and panels using a IR Temperature Probe.  These temps were in line 
with current specifications.  We verified the exit temperatures with the 
built-in thermocoupler and a temperature probe. However, one of our 
local sources allowed us to use their IR Temp Probe that took into 
consideration the Emissivity of the material measured, in this case, the 
rubber lam rollers.  The exit temp was then 25~30 degrees higher than 
our initial testing.  

How critical is the emissivity and can it be a factor here?  Does 
anyone else rely on emissivity to read their exit temps?  The 
recommended emissivity is .86 (20~30 degrees out of spec) but when 
using 1.0, the required temp was achieved.

Please advise.

John Gulley
Compuroute Inc.

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