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Electricity and Magnetism
In the CMCs uncertainty statements, the notation Q[a, b] stands for the root-sum-square of the terms between brackets: Q[a, b] = [a2 + b2]1/2
 
Result of the search
Your selection : Electricity and Magnetism
 
Brazil, INMETRO (Instituto Nacional de Metrologia, Qualidade e Tecnologia)
Complete CMCs in Electricity and Magnetism for Brazil (.PDF file)
AC current: AC current up to 100 A: meters. Multimeter, 0.01 mA to 20 mA
Relative expanded uncertainty (k = 2, level of confidence 95%) in µA/A: 14 to 16
Standards sources
Frequency range: 10 Hz to 1 kHz
Approved on 21 April 2016
Internal NMI service identifier: INMETRO/8101
 
AC current: AC current up to 100 A: meters. Multimeter, 0.01 A to 20 A
Relative expanded uncertainty (k = 2, level of confidence 95%) in µA/A: 27 to 124
AC-DC transfer standard plus shunt or standards sources
Frequency range: 10 Hz to 10 kHz
Approved on 21 April 2016
Internal NMI service identifier: INMETRO/8101
Uncertainty table
 
AC current: AC current up to 100 A: sources. Multifunction calibrator, transconductance amplifier, 0.01 mA to 20 mA
Relative expanded uncertainty (k = 2, level of confidence 95%) in µA/A: 14 to 16
Voltage drop in standard resistor measured with digital sampling
Frequency range: 10 Hz to 1 kHz
Approved on 21 April 2016
Internal NMI service identifier: INMETRO/8100
 
AC current: AC current up to 100 A: sources. Multifunction calibrator, transconductance amplifier, 0.01 A to 20 A
Relative expanded uncertainty (k = 2, level of confidence 95%) in µA/A: 27 to 128
Voltage drop in shunts measured with AC-DC transfer standard
Frequency range: 10 Hz to 10 kHz
Approved on 21 April 2016
Internal NMI service identifier: INMETRO/8100
Uncertainty table
 
AC current: AC-DC current transfer: AC-DC transfer difference. AC-DC transfer standard plus shunts, 0.005 A to 100 A
Relative expanded uncertainty (k = 2, level of confidence 95%) in µA/A: 3.5 to 86
Direct comparison
Frequency range: 10 Hz to 100 kHz
Approved on 21 April 2016
Internal NMI service identifier: INMETRO/8102
Uncertainty table
 
AC high voltage capacitance bridges: capacitance ratio. Standard capacitors, 1  to 10 
Relative expanded uncertainty (k = 2, level of confidence 95%): 4.00E-05
Direct reading
Ratio: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Frequency:  60 Hz
Voltage: 30 V to 520 V
Approved on 21 April 2016
Internal NMI service identifier: INMETRO/8005


 
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