After the discovery of electricity and its usage in lighting and energy generating, the electrical measurements with all its branches, became one of the important implementation of the metrology in our daily life, in housing, factories, energy plants, the military, health, and civil sectors at all levels. Responding to all these needs, the department covered a calibration service in the service and production sectors in KSA. The electrical measurements department consists of four laboratories: Voltage Laboratory, Impedance Laboratory, Power-Energy Laboratory, and Electromagnetism Laboratory.
It is one of the electricity measurement laboratories in the national center of measurement, and it is responsible for establishing, maintaining alternating, and direct current (AC and DC) voltage measurement standards with reference to amperes. In addition, transmit it to all national agencies that measures voltage, DC and AC in the industrial and service sectors. The laboratory provides calibration services for all devices (generation and reading of voltage and electric current) using high-precision reference devices, including: voltage cells, alternating voltage transformers, alternating and direct current DC and AC splitter, and the laboratory has the following measurement capabilities :
Measurement and calibration capabilities:
0.04µV/V
| 10V
| DC Standard 10V
|
0.10µV/V
| 1.018V
| DC Standard 1.018V
|
(4-37) μV/V
| 1 V-1000 V 10Hz-1MHz | Thermal Voltage Convertor
|
(4-90)µA/A
| 10mA-100A 10Hz-100kHz | Thermal Current Convertor
|
(4-12) μV/V
| 100mV-1000V
| DC Volt Calibrator
|
52μV/V16mV/V
| 0.6mV-1000V 10Hz-1MHz | AC Volt Calibrator
|
(43-140) μA/A
| 0A-2A
| DC Current Calibrator
|
43μA/A-11mA/A
| 2mA-2A 10Hz-10kHz | AC Current Calibrator
|
(7.1-120)μΩ/Ω
| 1Ω-100MΩ
| Resistance Calibrator
|
4μV/V-12 mV/V
| 100mV-1000V
| DC Volt Multimeter
|
46μV/V-2mV/V | 100mV-1000V 20Hz-1MHz | AC Volt Multimeter
|
(41-100)μA/A
| 100µA-1A
| DC Current Multimeter
|
(0.14-7.2)mA/A
| 100µA-1A 300Hz-10kHz | AC Current Multimeter
|
(7.0-100)μΩ/Ω
| 1Ω-100MΩ
| Resistance Multimeter
|
The laboratory is concerned with creating and preserving the electrical impedance measurement standard, which is one of the electrical quantities that describe the amount of electrical energy consumption according to the type of electrical load. It varies according to the type of electrical load (constant and alternating resistance - capacitors - coils). There are a number of ways to measure energy using various measuring systems that can be calibrated in the power and energy laboratory and assigned to international units. The laboratory provides calibration services for power and energy meters, Such as "active and passive power" devices and "voltage and current transformers", and the laboratory has the following measurement capabilities:
Measurement and calibration capabilities:
40µW/(V•A)
| 0 W – 2400 W
| Active Power Single Phase (f<=400 Hz) Power Meter، Power Converter |
40 µVAR/(V•A)
| 0 VAR – 2400 VAR
| Reactive Power Single Phase (f<=400 Hz) Power Meter |
40 µVA/(V•A)
| 0 VA – 2400 VA
| Apparent Power Single Phase (f ≤ 400 Hz( Power Meter |
0.10 mW/(V•A)
| 0 W – 60000 W
| Active Power Three Phase Power Meter |
0.10 mVAR/(V•A)
| 0 VAR – 60000 VAR
| Reactive Power Three Phase Power Meter |
100·10-6
| 0 – 0.02
| AC High Current ( Ratio Erorr) Current Transformer |
0.1 mrad
| 0 – 20 mrad
| AC High Current ( Phase displacement) Current Transformer |
| 150·10-6 | 0.002
| AC High Voltage ( Ratio Erorr) Voltage Transformer |
0.15 mrad
| 0 – 20 mrad
| AC High Voltage ( Phase displacement) Voltage Transformer |
1.0 mΩ/Ω
| 0.01 Ω ≤ R ≤ 10 kΩ
| High Voltage Impedance: Burden: Reel Component Standard Burden for Instrument Transformer |
1.0 mrad
| 0 rad ≤ δ ≤ 1.57 rad
| High Voltage Impedance: Burden: Imaginer Component (Phase Displacement) Standard Burden for Instrument Transformer |
0.20 mA/A
| 10 mA ≤ I ≤ 10 A Harmonics Number: 1 ≤ n ≤ 50 Mains Frequency: 45 Hz ≤ f ≤ 65 Hz | Current and Voltage Waveform: Mains Frequency Current Harmonics Mains Frequency Harmonic Analyser، Harmonic Current Source |
0.20 mV/V
| 1 V ≤ V ≤ 300 V Harmonics Number: 1 ≤ n ≤ 50 Mains Frequency: 45 Hz ≤ f: ≤ 65 Hz | Current and Voltage Waveform: Mains Frequency Harmonic Distortion Mains Frequency Harmonic Analyser، Signal Generator، Distortion Meter، |
0.50%
| 0.5 ≤ Pst ≤ 10 Modulation Frequency: 8.3 mHz ≤ f ≤ 40 Hz Mains Frequency: 45 Hz ≤ f ≤ 65 Hz | Current and Voltage Waveform: Mains Frequency Voltage Fluctuations; Square Wave Modulation Flicker Meter
|
The laboratory is concerned with creating and preserving an electrical impedance measurement standard, which is one of the electrical quantities that describe the amount of impedance in electrical conductors and varies according to the type of electrical load (continuous and alternating resistance - capacitors - coils). ). There are a number of methods for measuring impedance using various measuring systems, which can be calibrated by the impedance laboratory and assigned to international units. The laboratory provides calibration services for high-precision impedance measuring devices such as "standard resistors", "standard capacitors" and "standard coils" and the laboratory has the following measurement capabilities:
Measurement and calibration capabilities:
1-50 ppm
| 100pF-1pF
| Fused-Silica Standard Capacitor
|
10-200 ppm
| 1 uF-1pF
| Standard Capacitor
|
0،13 ppm
| 100 Ω
| Standard Resistor
|
20 ppm
| 1 mΩ- 100 mΩ
| Standard Resistor
|
0.4 ppm
| 1 Ω- 10 kΩ
| Standard Resistor
|
0.7-10 ppm
| 100 kΩ- 100 MΩ
| Standard Resistor
|
12-700 ppm
| 1 GΩ- 100 TΩ
| Standard Resistor
|
80-200 ppm
| 100 uH-10H
| Standard Inductor
|
The laboratory is concerned with measuring the strength of electromagnetic waves emanating from electronic devices, home appliances and other devices that emit electromagnetic waves, and it checks the tools for measuring them. There are a number of methods of measuring the electromagnetic field using various measuring systems that can be calibrated with the electromagnetism laboratory and assigning them to international units. The laboratory provides calibration services for high-precision measurement devices related to electromagnetic measurements such as "magnetic field sensors" and "electric field sensors", and the laboratory has the following measurement capabilities:
Measurement and calibration capabilities:
1.4dB - 2.6dB
| 30 Hz-18 GHz
| Electric Field Probes
|
1.1dB - 2.6dB
| DC-1 GHz
| Magnetic Field Probes
|
1.4dB - 2.6dB
| 1 V/m to 200 V/m
| Electric Field Probes
|
1.1dB - 2.5dB
| 0.01 A/m to 80 A/m
| Magnetic Field Probes
|