agorot
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Infrared IR Thermometers
I've been wanting to get one of these devices for quite some time now for a variety of different applications, but if anyone out there already has
one, I'd like to get some advice.
I'm mostly curious about the emissivity values that a thermometer uses to measure the surface of a substance. Some thermometers come with an
adjustable emissivity value, but others come with a (usually .95) fixed value. This is to adjust for the different amounts of radiation that different
substances emit. Does adjustable emissivity really matter though? How much error does the non-adjustable emissivity create?
Also does the ability to accurately measure an object degrade at the extreme ends of a thermometer's range?
Thanks for your help
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chemrox
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I have two, one fixed and one with adjustable emissivity. The one with settings gives more accurate readings with glassware than the fixed one. I
don't recall the specific parameters involved. They're trick to use and generally give ballpark answers. They are handy for avoiding burns and
guessing when something is ready to come over.
"When you let the dumbasses vote you end up with populism followed by autocracy and getting back is a bitch." Plato (sort of)
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agorot
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How much more accurate is the nonfixed one? Is the fixed one within 5 degrees? If I were to measure a piece of hot glassware at 600 degrees, how
accurate would your fixed one versus your non fixed one be?
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