TY  - CHAP
U1  - Teil eines Buches
A1  - Hartmann, Jürgen
ED  - Ripple, Dean C.
T1  - Comparison of the New NPL Primary Standard Ag Fixed-Point Blackbody Source with the Primary Standard Fixed
T2  - Temperature: Its measurement and control in science and industry, volume 7
N2  - Above the freezing point of silver (96178 C), the International Temperature Scale of 1990 is defined in terms of Planck's radiation law. The scale is maintained and disseminated using a validated and linear pyrometer in conjunction with a blackbody reference source at either the Ag, Au (1064.18 C) or Cu (1084.62 C) freezing point.
In order to realize the scale with the highest precision high quality, well-characterised, reproducible fixed-point blackbody sources are required. Such sources have been maintained at NPL for a number of years, but it was felt that improvements to the design would be beneficial. A new Agpoint blackbody source has therefore been constructed. The new design will improve the quality and reproducibility of the melting and freezing plateaux and reduce errors due to the “out-of-focus” size-of-source effect which is difficult to measure and to eliminate. Full details of the design of the new source …
AB  - Above the freezing point of silver (96178 C), the International Temperature Scale of 1990 is defined in terms of Planck's radiation law. The scale is maintained and disseminated using a validated and linear pyrometer in conjunction with a blackbody reference source at either the Ag, Au (1064.18 C) or Cu (1084.62 C) freezing point.
In order to realize the scale with the highest precision high quality, well-characterised, reproducible fixed-point blackbody sources are required. Such sources have been maintained at NPL for a number of years, but it was felt that improvements to the design would be beneficial. A new Agpoint blackbody source has therefore been constructed. The new design will improve the quality and reproducibility of the melting and freezing plateaux and reduce errors due to the “out-of-focus” size-of-source effect which is difficult to measure and to eliminate. Full details of the design of the new source …
Y1  - 2003
SN  - 0-7354-0153-5
SB  - 0-7354-0153-5
UR  - https://www.researchgate.net/profile/Graham_Machin/publication/252572390_Comparison_of_the_New_NPL_Primary_Standard_Ag_Fixed-Point_Blackbody_Source_with_the_Primary_Standard_Fixed_Point_of_PTB/links/00b4952efb53eca21d000000/Comparison-of-the-New-NPL-Primary-Standard-Ag-Fixed-Point-Blackbody-Source-with-the-Primary-Standard-Fixed-Point-of-PTB.pdf
PB  - American Institute of Physics
ER  -