The device I have is very inaccurate unless it
is at room temperature :-( .
How about using the peak amplitude of the Wien displacement spectrum to determine the temperature rather than the rather crude method of incident energy? That would be very accurate assuming black body radiation.
Blog Make a Frequency Plan Tom Burke 17 comments When designing a printed circuit board, you should develop a frequency plan, something that can be easily overlooked. A frequency plan should be one of your first steps ...