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    Summary of Error Analysis for the National Bureau of Standards 1016-mm Guarded Hot Plate and Considerations Regarding Systematic Error for the Heat Flow Meter Apparatus

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    A summary is given of the error analysis of the National Bureau of Standards (NBS) 1016-mm guarded hot plate (GHP) apparatus, with emphasis given to new ideas or techniques. The report discusses the following items: a brief introduction to the principle of measurement, a rationale for the method of summing of uncertainties, a list of individual uncertainties, a description of the innovative plate temperature control method, and a derivation of the error due to systematic uncertainty for the heat flow meter apparatus.


    apparent thermal conductivity, error analysis, guarded hot plate, heat flow meter, thermal insulation, thermal resistance

    Author Information:

    Rennex, B
    Physicist, National Bureau of Standards, Washington, DC

    Committee/Subcommittee: C16.30

    DOI: 10.1520/STP32900S