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United Kingdom, NPL (National Physical Laboratory)
Complete CMCs in Electricity and Magnetism for United Kingdom (.PDF file)
AC current: AC/DC transfer difference. AC-DC standard plus shunt, 0.001 A to 20 A
Relative expanded uncertainty (k = 2, level of confidence 95 %) in µA/A: 10 to 243
Thermal converter "digital" bridge
Frequency: 10 Hz to 100 kHz
Approved on 06 August 2013
Internal NMI service identifier: 242
Uncertainty table