Electronics > Metrology

Practical accuracy of IR thermometers on PCBs

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--- Quote from: xygor on February 28, 2016, 12:14:47 am ---
--- Quote from: uncle_bob on February 26, 2016, 11:43:56 pm ---... When we do IR profiling of PC Boards (with a camera), we spray paint them black first. Without that step, the data does is not very useful.

--- End quote ---

Black what? Why black?  Gray primer should do pretty well.  Applying it to the whole board may affect the result.  If it is too thick, it insulates.  If it is too thin and has good emmissivity, it can cool the board.

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Black because we got a couple of cans of this and that. The black stuff was best when put on as lightly a we could spray it.



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