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Calibration and Measurement Capabilities
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
 
Egypt, NIS (National Institute for Standards)
Complete CMCs in Electricity and Magnetism for Egypt (.PDF file)
AC/DC current transfer difference. AC/DC transfer standard plus shunt, 10 mA to 5000 mA
Relative expanded uncertainty (k = 2, level of confidence 95%) in µA/A: 4 to 19
Comparsion with another AC/DC transfer standard
Frequency: 10 Hz, 55 Hz, 1 kHz, 10 kHz
Approved on 22 Sep 2017
Internal NMI service identifier: 21.4.1
Uncertainty table
 
Capacitance: low-loss capacitors. Fused Silica Capacitors, 10 pF to 100 pF
Relative expanded uncertainty (k = 2, level of confidence 95%) in µF/F: 0.63 to 0.70
Direct method
Fixed Capacitance: 10 pF, 100 pF
Frequency: 1000 Hz, 1592 Hz
Approved on 22 Sep 2017
Internal NMI service identifier: 21.2.1
Uncertainty table
 
DC current sources:low values. Standard Capacitor , Voltage Source , High Resistance Standard, 1.00E-13 A to 1.00E-10 A
Absolute expanded uncertainty (k = 2, level of confidence 95%) in A: 9.1E-16 to 7.6E-14
Current Generator: current generated by charging or discharging a gas-filled capacitor With Software Controlled for Nonlinearity Compensation
Ambient temperature: 23 ºC to 24 ºC
Ambient humidity: 45 % to 50 %
Approved on 22 Sep 2017
Internal NMI service identifier: 21.5.1
Uncertainty table
 
DC resistance standards and sources: high values. Fixed resistor, 1.00E+07  to 1.00 E+08 
Relative expanded uncertainty (k = 2, level of confidence 95%) in µ/: 94 to 760
Potentiometric ratio bridge
Applied voltage: 20 V
Temperature: 20 °C to 30 °C
Approved on 22 Sep 2017
Internal NMI service identifier: 21.1.2
Uncertainty table
 
DC resistance standards and sources: intermediate values. Fixed resistor, 1.00E+05  to 1.00E+06 
Relative expanded uncertainty (k = 2, level of confidence 95%) in µ/: 4 to 41
Potentiometric ratio bridge
Applied voltage: 10 V
Temperature: 20 °C to 30 °C
Approved on 22 Sep 2017
Internal NMI service identifier: 21.1.1
Uncertainty table
 
DC voltage sources: single vaues. DC solid state voltage standard, 1.018 V to 10 V
Relative expanded uncertainty (k = 2, level of confidence 95%) in µV/V: 0.03 to 0.2
Direct Comparison with primary standard (JVS)
Temperature: 23 °C ± 2°C
Approved on 22 Sep 2017
Internal NMI service identifier: 21.3.1
Uncertainty table