Traceability transfer in high accuracy contact temperature measurements for length interferometry

7th Brazilian Congress on Metrology

Costa, P.A.^1 ; Bessa, M.S.^1 ; Schutz, J.S.^1 ; Azeredo, C.L.S.^2 ; França, R.S.^1 ; Quelhas, K.N.^3 ; Malinovski, I.^1

Optical Metrology Division, National Institute of Metrology Quality and Technology-Inmetro, Av. Na Sa das Graças, 50, Duque de Caxias Xerém, RJ

25250-020, Brazil^1

Fluid Dynamics Metrology Division, National Institute of Metrology Quality and Technology-Inmetro, Av. Na Sa das Graças, 50, Duque de Caxias Xerém, RJ

25250020, Brazil^2

Thermal Metrology Division, National Institute of Metrology Quality and Technology-Inmetro, Av. Na Sa das Graças50, Duque de Caxias Xerém, RJ

25250020, Brazil^3

关键词: Application examples;    Contact temperature;    Gauge block;    High-accuracy;    Interferometric measurement;    Relevant components;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/575/1/012025/pdf
DOI  :  10.1088/1742-6596/575/1/012025

来源: IOP

【 摘 要 】

Some relevant components of uncertainty in interferometric measurements are associated with temperature measurements of material standards. This paper proposes a traceability transfer chain through a high accuracy contact temperature measurement system towards other temperature measurements systems. Those are traced to the best national metrological references in appropriate configurations for gauge-block length calibrations, allowing in that way investigations of effects and uncertainty components linked to temperature measurement of those blocks as further reductions in these uncertainties. As an application example a study of temperature gradients on gauge blocks is shown