Click on the Excel document attached below named Calc Res or Temp from ITS90 coeffs.
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ITS-90 Reference Function Calculator
Realization of ITS-90 from 273.15 K through 1234.93 K:
Calibration and Accuracy of Secondary Standard PRT's to the ITS-90
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Temperature range from 660.323 to 961.78 need d coefficient but I didn't see it in your excel file?
Thank you very much for the Excel document! It helped me a lot.
But I found an error:
Constant aa5 value -0.61893395 (H30) is wrong. It must be -0.61899395.
Thanks Elmar. Correction made.
Hello Shane! Thanks so much for taking the time to put this together. What a timesaver this turned out to be.
Hi Shane,
could you please add a comment to the R=>T conversion including cell B22. Is there any reference to this?
Hi Shane,
is there a formula could i used to compute ( a4 b4 a7 b7 c7 results of Nominal current Calibration ) I cant find any formula for this equation . i find it in may sensor calibration certificate. hope you can give me idea how can i compute.
thanks,
AlexA
Great work. ¡¡¡Congrats!!!
Could you check out about the titles:
i. Above Zero Calculator 0.01 °C to 660.323 °C
ii. Below Zero Calculator -189.3442 °C to 0.01 °C
iii. K and not °K
To Alex Arellano:
You can found useful:
http://download.flukecal.com/pub/literature/3498460B_EN_w.pdf
https://us.flukecal.com/ITS-90-Reference-Function-Calculator
a(x)= -1.62474200E-02
b(x)= 0.00000000E+00
c7= 0.00000000E+00
a(x)= -1.61388300E-02
b(x)= -1.26969300E-04
Please explain their formulas