Dear All,

I am trying to calibrate my pyrometer (non-contact, infrared temp. meter).

Could anyone please suggest a function which would describe the following data set and later use it to interpolate the data within the given range of -7 to 600 deg. Obviously, I need R^2 as close to 1 as possible.

I just need a mathematical function which describes these values.

Measurement results:

Temp [deg. C] Output voltage [uV]

-7 20494 600 20755 700 20974 800 21285 900 21696 1000 22282 1100 22871 1200 23534 1300 24333 1400 25161 1500 26078 1600 27074 1680 28031 1700 28251

I cannot use polynomials.

Would prefer a power function, exponential growth function or any other function resembling Planck's Law.

Thank you very much in advance for any comments/suggestions/criticism/anything.

Peter Drawa