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ITS-90

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    Roman Loftus

    great

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    Ciro Alberto Sanchez

    Good graph.

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    Ken Vejbæk

    Hi Roman,
    Does Fluke provide software or an Excel sheet, used to calculate the ITS-90 coefficients based on temperature and resistance measurements, or do you know where to find it? I need the coefficients to adjust 1523 temperature probes etc.
    BR Ken

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    Ron A.
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    Martha Lis

    Hello, Tableware V3 has 2 problems.
    One is a math error. It adds a 1 to the RTPW in the coefficients and subtracts that 1 from the resistance at TPW in the resistance tables for 25 Ohm probes. For 100 Ohm probe it adds a 5 to RTPW in the coefficients.
    Two is the ratio table prints out with the title of "ITS-90 Temperature vs. Resistance Table".

    I cannot give this to my customer or use it for my own SPRT and PRT calibrations.

    When does Fluke intend to fix these problems?

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