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​​​​​​​​​​​​​Metrological Capabilities in the Kingdom of Saudi Arabia

 At the end of the last century and the beginning of the international industrial revolution, the need for harmonizing measurement standards around the world in accordance with an agreed system of Units has emerged. In 1875, the Meter convention was signed in Paris, which was the beginning of harmonizing the international measurement standards and establishing the scientific basis of the International System of Units (SI). Consequently, a National Metrology Institute (NMI) was decided in each country to establish its national measurement standards and harmonies with standards of the other countries' signatories to the meter convention.  Harmonization of the measurement standards covers the realizations of the 7 basic units and the 22 derived units.

Because SASO recognized the importance of Metrology as one of its main activities and tasks, the National Measurement and Calibration Center (NMCC) was established in 1406 corresponding to 1986 AD. It is considered the national body entrusted to maintain and develop the national measurement standards, in addition to the provision of metrological traceability of the measurement results in the Kingdom to the SI units. The NMCC includes (30) specialized national laboratories serving the scientific, legal, and industrial metrology in the governmental and private sectors. NMCC is equipped with advanced measurement standards and calibration systems on the primary and secondary levels, which are operated by Saudi competent staff to provide calibration services traceable to the SI units.

In addition, NMCC provides technical consultations in establishing and developing calibration laboratories, designing and functioning calibration systems in cooperation with industrial companies.  These consultations are served to accredited laboratories and to industrial bodies upon their request in order to enhance their production efficiency and improve their competitiveness in the international markets.

Also, NMCC contributes to environmental protection, health, and safety and provides training services. The aim of the training is to enhance the level of the technical staff in industry and services sectors to perform accurate calibration, testing and to prepare calibration certificates and test reports in accordance with the requirements of ISO / IEC 17025 including correct figures of uncertainty in measurement results.

Responsibilities of NMCC:

  • Maintaining and developing the national measurement standards in accordance with the International System of Units SI.
  • Calibrating the measuring instruments and standards maintained by the governmental and private agencies as well as the Gulf Cooperation Council (GCC) member states.
  • Providing technical consultation for projects of Saudi Documentary Standards.
  • Providing calibration service for reference standards maintained by the national calibration laboratories and metrological verification laboratories.
  • Providing calibration services for industry in different industrial and monitoring scopes.
  • Providing calibration service of measurement standards maintained by private calibration laboratories.
  • Keeping abreast with the scientific developments related to the International System of Units and work to implement and publish it.
  • Representing the Kingdom in the activities related to National Metrology Institutes regionally and internationally.
  • Conducting research in metrology.
  • Holding awareness seminars, workshops and training courses in various scopes of metrology.
  • Participating in key and supplementary comparison programs regionally and internationally.
  • Providing technical consultation for the governmental and private institutions in metrology. 

The National Measurement and Calibration Center (NMCC) is considered the national sector that is responsible for maintaining all the national measurement standards and achieving the reference principle by linking the basic international units with the International Bureau of Weights and Measures (BIPM). 
The second (s)​:​

The metre (m)​:

The kilogram (Kg)​:

KGEN.png

The ampere (A)​:


The kelvin​ (K)​:


The mole (mol)​:


The candela​ (cd):

 

  • Executive Regulation of ​Measurement and Calibration Law: (Click here​)
  • Cost Regulation of  Measurement and Calibration Services : (Click here)
  • ​Appendix (1) of the Executive Regulation of Measurement and Calibration Law (Technical Requirements for Fuel Pumps): (Click here)
  • Appendix (2) ​​​​​​of the Executive Regulation of Measurement and Calibration Law (Technical Requirements for Non - Automatic Weighing Instruments): (Click here​​)​​
  • Annex (3) of the Executive Regulation for Metrology and Calibration System (Technical Provisions for Effective Electric Energy Meters): (click here)
  • Controls of qualifying inspection and maintenance bodies for measuring devices and issuing the attached type approval certificate: (click here).

International recognition is one of the most important tools in international metrology. It helps ensure the accuracy and dependability of reading measuring devices, supports industrial activities and the national economic system, ensures products quality, and enhances competitiveness and accessibility to global markets.

The importance of international recognition:

  1. It is the technical basis for countries' recognition (signatories of the agreement) of the capabilities of measurement and calibration in the member states of the agreement, which was made public on the website of the International Bureau of Weights and Measures 'BIPM'. International recognition also means that calibration certificates issued by a national calibration body are internationally recognized in all countries of the world.
  2. Achieving fair trade, improving production, enhancing consumer and business sector confidence in products, developing technologies and innovations, and contributing to scientific research to support the redefinition of international units and providing basic technical support for technological development.
  3. Industrial Production: through measurement and calibration activities under the controls of the 'international recognition' agreement, the components and parts manufactured at a different time and in a different location are compatible. 
  4. Health and food safety: The application of international recognition ensures that society is protected from hazardous and unsafe products. 

The National Measurement and Calibration Center (NMCC) is one of the most advanced regional and global centers, and KSA has achieved international recognition in  technical capacity to provide a range of technical services in a variety of areas, including:

Radio frequency measurements , Scattering parameters: Reflection coefficient in coaxials (real and imaginary): -1 to 1​​

Passive device: type N

Absolute expanded uncertainty: 7.0E-3 to 5.9E-2

Vector network analyser (VNA)

Frequency range : 100 kHz to 18 GHz

Connector type : type N

Information on resultts in "10.1051/metrology/201707008"


AC power , AC power and energy: three phase (frequency <= 400 Hz), reactive power: 0.6 var to 2.30E4 var

Power meter

Relative expanded uncertainty: 6.0E1 µvar/VA

Comparison with reference standard

Voltage : 60 V to 230 V

Current  : 0.01 A to 100 A

Phase : 0.5 to 1,  inductive or capacitive; 

Frequency : 53 Hz and 60 Hz

The given range is "per phase"


Linear dimensions , End standards: 0.5 mm to 100 mm

Gauge block: central length L

Absolute expanded uncertainty: 3.0E1 nm to 4.0E1 nm

Q[30nm, 0.27e-6L] L in mm, values range from 30 nm to 40 nm
The uncertainty is expressed in nm

Interferometry, exact fractions

ISO 3650:1998(E)

central length : L


Electric and magnetic fields , Electromagnetic fields above 50 kHz: magnetic field strength: 0.01 A/m to 80 A/m

Magnetic flux density meter, magnetic field strength meter

Relative expanded uncertainty: 2 dB

TEM cell

IEEE std. 1309- 2013

Frequency : 50 kHz to 1 MHz


Electric and magnetic fields , Electromagnetic fields above 50 kHz: magnetic field strength: 0.01 A/m to 80 A/m

Field probe

Relative expanded uncertainty: 2 dB

TEM cell

IEEE std. 1309- 2013

Frequency : 1 MHz to 400 MHz


Electric and magnetic fields , Electromagnetic fields above 50 kHz: electric field strength: 1 V/m to 200 V/m

Field probe

Relative expanded uncertainty: 2 dB

TEM-cell

IEEE std. 1309- 2013

Frequency : 100 kHz - 400 MHz


Linear dimensions , End standards: 125 mm to 1000 mm

Gauge block: central length L

Absolute expanded uncertainty: 6.0E1 nm to 2.8E2 nm

Q[49nm; 0.28e-6L] L in mm, values range from 60 nm to 284 nm
The uncertainty is expressed in nm

Interferometry exact fractions


AC power , AC power and energy: three phase (frequency <= 400 Hz), reactive power: 0.6 W to 2.30E4 W

Power meter

Relative expanded uncertainty: 6.0E1 µW/VA

Comparison with reference standard

Voltage  : 60 V to 230 V

Current  : 0.01 A to 100 A

Phase : 0.5 to 1,  inductive or capacitive; 

Frequency : 53 Hz and 60 Hz

The given range is "per phase"

 

Electric and magnetic fields , Magnetic fields below 50 kHz: magnetic field strength: 0.01 A/m to 80 A/m

Magnetic flux density meter, magnetic field strength meter

Relative expanded uncertainty: 1.4 dB

Helmholtz coil

IEEE std. 1309- 2013

Frequency  : 1 kHz to 50kHz

 

Radiations of the mise en pratique , Absolute frequency: 474 THz

Frequency stabilized laser

Absolute expanded uncertainty: 2.4E1 kHz

Frequency stabilized laser

 

Impedance (up to the MHz range) , Inductance: self inductance,intermediate values: 1.00E-3 H to 1 H

Fixed inductor

Relative expanded uncertainty: 8.2E1 µH/H to 2.5E2 µH/H

STANDARD INDUCTOR CALIBRATION
WITH MAXWELL-WIEN BRIDGE

Frequency : 100 Hz to 10 kHz

temperature : 23 °C ± 1 °C

 

Impedance (up to the MHz range) , Inductance: self inductance, low values: 100 µH

Fixed inductor

Relative expanded uncertainty: 3.2E2 µH/H

STANDARD INDUCTOR CALIBRATION
WITH MAXWELL-WIEN BRIDGE

Frequency : 100 Hz to 10 kHz

temperature : 23 °C ± 1 °C

 

AC power , AC power and energy: three phase (frequency <= 400 Hz), reactive energy: 0.6 var s to 2.30E4 var s

Energy meter

Relative expanded uncertainty: 6.0E1 µvar s (var s)-1

Comparison with reference standard

Voltage : 60 V to 230 V

Current : 0.01 A to 100 A

Phase : 0.5 to 1,  inductive or capacitive; 

Frequency : 53 Hz and 60 Hz

Time : 1 s to 100 s

The given range is "per phase"

 

Radio frequency measurements , RF power: absolute power in coaxials: 0.01 mW to 100 mW

Power source, power meter: type N

Relative expanded uncertainty: 8.6 mW/W to 1.1E1 mW/W

Direct measurement

Frequency range : 100 kHz to 18 GHz

Connector type : type N

 

Frequency , Frequency: 1 MHz to 10 MHz

Local frequency standard

Relative expanded uncertainty: 4.6E-13 Hz/Hz

Phase measurement

 

AC power , AC power and energy: single phase (frequency <= 400 Hz), reactive power: 0.6 var to 2.30E4 var

Power meter

Relative expanded uncertainty: 6.0E1 µvar/VA

Comparison with reference standard

Voltage : 60 V to 230 V

Current  : 0.01 A to 100 A

Phase : 0.5 to 1,  inductive or capacitive; 

Frequency : 53 Hz and 60 Hz

 

AC power , AC power and energy: three phase (frequency <= 400 Hz), active power: 18 W to 1200 W

Power meter

Relative expanded uncertainty: 4.0E1 µW/VA

Comparison with reference standard

Voltage  : 30 V to 240 V

Current : 0.6 A to 5 A

Phase  : 0 to 1,  inductive or capacitive; 

Frequency : 53 Hz to 60 Hz

The given range is "per phase"

 

AC power , AC power and energy: single phase (frequency <= 400 Hz), active power: 0.6 W to 2.30E4 W

Power meter

Relative expanded uncertainty: 6.0E1 µW/VA

Comparison with reference standard

Voltage : 60 V to 230 V

Current  : 0.01 A to 100 A

Phase : 0.5 to 1,  inductive or capacitive; 

Frequency : 53 Hz and 60 Hz


Electric and magnetic fields , Electromagnetic fields above 50 kHz: magnetic field strength: 0.01 A/m to 80 A/m

Field probe

Relative expanded uncertainty: 2.5 dB

Fully-anechoic chamber

IEEE std. 1309- 2013

Frequency  : 500 MHz to 1 GHz

 

AC power , AC power and energy: three phase (frequency <= 400 Hz), active energy: 0.6 Ws to 2.30E4 Ws

Energy meter

Relative expanded uncertainty: 6.0E1 µWs (VAs)-1

Comparison with reference standard

Voltage : 60 V to 230 V

Current : 0.01 A to 100 A

Phase : 0.5 to 1,  inductive or capacitive; 

Frequency : 53 Hz and 60 Hz

Time : 1 s to 100 s

the given range is "per phase"

 

Impedance (up to the MHz range) , Inductance: self inductance,high values: 10 H

Fixed inductor

Relative expanded uncertainty: 2.1E2 µH/H

Maxwell-Wien bridge

Frequency : 100 Hz to 1 kHz

temperature : 23 °C ± 1 °C


Radiations of the mise en pratique , Vacuum wavelength: 633 nm

Frequency stabilized laser

Absolute expanded uncertainty: 3.0E-2 fm

Frequency stabilized laser

 

Electric and magnetic fields , Electromagnetic fields above 50 kHz: electric field strength: 1 V/m to 200 V/m

Field probe

Relative expanded uncertainty: 2.5 dB

Fully-anechoic chamber

IEEE std. 1309- 2013

Frequency  : 500 MHz - 18 GHz


Radio frequency measurements , Scattering parameters: Transmission coefficient in coaxials (real and imaginary): -1 to 1

Passive device: type N

Absolute expanded uncertainty: 1.1E-5 to 1.0E-2

Vector network analyzer (VNA)

Frequency range : 100 kHz to 18 GHz

Connector type : type N

Information on resultts in "10.1051/metrology/201707008"

 

Radio frequency measurements , RF power: calibration factor in coaxial: 0.8 to 1

Thermistor, power sensor: type N

Absolute expanded uncertainty: 9.4 mW/W to 1.9E1 mW/W

Direct comparison

Power level  : 1 mW      

Frequency range : 100 kHz to 18 GHz

Connector : type N

 

Gravity , Gravitational acceleration: 9.78 m/s2 to 9.83 m/s2

Absolute gravity

Absolute expanded uncertainty: 4.8E-8 m/s2

Absolute gravity FG5-X

 

AC power , AC power and energy: single phase (frequency <= 400 Hz), active power: 18 W to 1200 W

Power meter

Relative expanded uncertainty: 4.0E1 µW/VA

Comparison with reference standard

Voltage : 30 V to 240 V

Current : 0.6 A to 5 A

Phase  : 0 to 1,  inductive or capacitive; 

Frequency : 53 Hz to 60 Hz

 

Time interval , Time interval: 2.00E-9 s to 1.00E5 s

Pulse width source

Absolute expanded uncertainty: 3.0E2 ps

Wide band-width oscilloscope

 

Time interval , Time interval​: 2.00E-9 s to 1.00E5 s

Rise/fall time source

Absolute expanded uncertainty: 3.0E2 ps

Wide band-width oscilloscope


For more, click (here).


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Last modified 22 Nov 2022
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