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eHam Forums => RFI / EMI => Topic started by: K9RFZ on November 06, 2012, 09:40:19 AM



Title: anyone using IR thermometer to find bad power insulators?
Post by: K9RFZ on November 06, 2012, 09:40:19 AM
I know some utility companies are using IR cameras to find cracked insulators that arc.
Has anyone tried using a cheap (<$100) IR thermometer to locate bad insulators that
may be sources of RFI? I'm contemplating buying one of these thermometers and giving
it a try, but if someone already has experience with this idea, then I'd like to know how
it worked.
Joseph, K9RFZ


Title: RE: anyone using IR thermometer to find bad power insulators?
Post by: K0OD on November 06, 2012, 10:56:50 AM
You can now buy remote thermometers for less than $25 and they're great for all sorts of uses, not just electronics. Interesting to walk around the house on a cold day and pinpoint leaks around windows and such. Or aim at electrical fixtures even in the ceiling to spot overheating.

The cheapie kind I bought from Harbor Freight only has a rated range of 10 feet as I recall.   Perhaps has some value to about 15'. It won't pick up overheating high on a utility pole. 

Mine has a laser pointer built-in for aiming which doubles as the world's greatest cat toy.

A must-have tool. 


Title: RE: anyone using IR thermometer to find bad power insulators?
Post by: K0OD on November 06, 2012, 03:39:40 PM
A very nice eham thread from two years ago about these thermometers.

http://www.eham.net/ehamforum/smf/index.php/topic,70677.0.html


Title: RE: anyone using IR thermometer to find bad power insulators?
Post by: KB5ZSM on November 24, 2012, 04:06:09 PM
I have used them in television work to locate parts that are over heating. You can't touch a horizontal output transistor while the TV is running due to the high voltage so the IR thermometers work great for this purpose.