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Fluke 62 Max Infrared thermometer


Fluke 62 Max Infrared thermometer

Old 07-16-2012, 07:01 AM
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Default Fluke 62 Max Infrared thermometer

Just bought one and the temp seems to be about 20 degrees higher then it's supposed to be.
Can not find anything on how to, or if is even possible, to calibrate it.
This should be correct right out of the package, correct?
Got it at Graingers. Maybe I'll just take it back.

Anyone have an info on these type of tools?

The "Manual" doesn't say squat. No really, just pictures, no explanations.
I guess they didn't want to write in in 15 languages.


Old 07-16-2012, 07:10 AM
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If it consistently reads 20 degrees too high, the device does not meet spec. Return it for one that does.
Old 07-16-2012, 07:16 AM
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You may want to Return it ....those things are real accurate - I have a$40 buck Rayteck ( I am sure much cheaper now) thats at least 10 years old and its right on. They do lose some accuracy with distance..... I usually use it to compare one cylinder or wheel bearing to another so that is its main function for me. It does seem to give the room and water temps pretty accurate though.
Old 07-16-2012, 08:10 AM
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Just back from Graingers.
One last check when I got there. The stores T-stat had a digital read out on it reading 70.
Tested the first one again with the laser on the stores room t-stat, it read 98.5+/-
Tested the replacement, #2, it was within one degree.
There is no calibration on them.

When I got the temp gun, I also bought two commercial Sanitaire upright vacuums on Friday, $360.00 each .
Get back to the job site, one vacuum works, one doesn't. I took that back the same day.

Lesson learned- Trust but verify.....ASAP.

Old 07-16-2012, 09:15 AM
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The accuracy of these products is dependent on the target they are looking at. They are calibrated to a perfect black radiation figure of 1.0. Some more sophisticated devices let you vary the emissivity setting for the target to align with another known standard. Also realize that as others have said that it looks for a target with a cone shaped field, much like sonar. So distance might include objects you do not want to sense.

Bottom line is that in practical use any target that is less black in color will skew the reading. A chrome bumper in the sun and a tire blackwall of the same actual temp will present a little problem for the device unless you can vary emissivity setting for the reflectivity of the chrome. It's centered around some agreed to value at the factory that will be most useful for consumers. Just get used to relative values among different surfaces vs actual temps unless you have real need to know the difference between 150 deg and 155.

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