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Old 02-27-2009, 11:15 AM   #1
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Default Is there a way to test the accuracy of a temp gun?

I have a little Ofna-branded one (they're also branded under other names). It measures 20f cooler than another one I have. A buddy has the same Ofna one I have and it measures higher than both of mine. Another buddy has a different model that measures about the same as my Ofna one.

Way too many measurements that are 20f difference.

Is there a way to test the accuracy of a temp gun? Would measuring boiling water (100c/212f) give me an indication? Anyone tried this?
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Old 02-27-2009, 11:21 AM   #2
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Originally Posted by markr04 View Post
I have a little Ofna-branded one (they're also branded under other names). It measures 20f cooler than another one I have. A buddy has the same Ofna one I have and it measures higher than both of mine. Another buddy has a different model that measures about the same as my Ofna one.

Way too many measurements that are 20f difference.

Is there a way to test the accuracy of a temp gun? Would measuring boiling water (100c/212f) give me an indication? Anyone tried this?
Boiling water does work.
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Old 02-27-2009, 11:24 AM   #3
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Originally Posted by markr04 View Post
I have a little Ofna-branded one (they're also branded under other names). It measures 20f cooler than another one I have. A buddy has the same Ofna one I have and it measures higher than both of mine. Another buddy has a different model that measures about the same as my Ofna one.

Way too many measurements that are 20f difference.

Is there a way to test the accuracy of a temp gun? Would measuring boiling water (100c/212f) give me an indication? Anyone tried this?

Find someone with a Exergen temp gun and compare yours to that.
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Old 02-27-2009, 11:36 AM   #4
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+1
I did this and found that my $70 temp gun reads exactly the same as the Exergen.
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Old 02-27-2009, 11:42 AM   #5
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Find someone with a Exergen temp gun and compare yours to that.
I did this with my raytech and the "rayjunk" was 10 degrees cooler, not bad. But my friend has the same model raytech and his measures 40 degress hotter than mine
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Old 02-27-2009, 03:21 PM   #6
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make sure the tip of you gun is clean this will make a big difference use a q-tip to clean it dust and oil on the tip will hurt accuracy big time
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Old 02-27-2009, 03:55 PM   #7
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Boiling water can be used but remember that the boiling point of water depends on your altitude. At sea level it is 212, at 2000 feet it is 208, and at 5000 feet it is 203. Barometric pressure will ever so slightly affect the boiling point as well but not as much as the altitude differences.
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