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In the CMCs uncertainty statements, the notation Q[a, b] stands for the root-sum-square of the terms between brackets: Q[a, b] = [a 2 + b 2]1/2
Unless otherwise stated the expanded uncertainties given below correspond to k = 2 (at a 95 % level of confidence)
Saudi Arabia, SASO-NMCC (National Measurement and Calibration Center - Saudi Standards, Metrology and Quality Organization)
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
{"row_1":{"col_1":"Frequency","col_2":"100 kHz to 1 GHz","col_3":"1 GHz to 6 GHz","col_4":"6 GHz to 18 GHz"},"row_2":{"col_1":"Type N 0 ≤ VRC ≤ 0.1","col_2":"0.0070","col_3":"0.011","col_4":"0.013"},"row_3":{"col_1":"Type N 0.1 < VRC ≤ 1","col_2":"0.017","col_3":"0.040","col_4":"0.059"}}
Vector network analyser (VNA)
Frequency range : 100 kHz to 18 GHz
Connector type : type N
Information on resultts in "10.1051/metrology/201707008"
Approved on 26 January 2022
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
Approved on 24 March 2022
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"
Approved on 10 February 2022
Institute service identifier : EL-PE-01
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"
Approved on 01 March 2022
Institute service identifier : EL-PE-01
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
{"row_1":{"col_1":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">Quantity</font>","col_2":"Instrument/ Artefact","col_3":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">Measurement Range</font>","col_4":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\" contenteditable=\"true\">Measurement Conditions</font>","col_5":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">Expanded Uncertainty</font>","col_6":"Comments"},"row_2":{"col_1":"<font style=\"FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">End standards</font>","col_2":"<font style=\"FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">Gauge block: central length L</font>","col_3":"<font style=\"FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\" contenteditable=\"true\">0.5 mm to 100 mm</font>","col_4":"Orientation: Vertical<br>Material : Steel<br>Wringing : Both Sides","col_5":"Q[30nm, 0.27e-6L], L in mm","col_6":"Interferometry exact fractions, Material: Steel"}}
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
Approved on 03 November 2021
Institute service identifier : LE-WL-02
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
Approved on 02 December 2021
Institute service identifier : EL-EM-04
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
Approved on 02 December 2021
Institute service identifier : EL-EM-05
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
Approved on 02 December 2021
Institute service identifier : EL-EM-02
Linear dimensions , End standards : 125 mm to 1000 mm
Gauge block: central length L
Absolute expanded uncertainty : 6.0E1 nm to 2.8E2 nm
{"row_1":{"col_1":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">Quantity</font>","col_2":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">Instrument/ Artefact</font>","col_3":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\" contenteditable=\"true\">Measurement Range</font>","col_4":"Measurement Conditions","col_5":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\" contenteditable=\"true\">Expanded Uncertainty</font>","col_6":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">Comments </font>"},"row_2":{"col_1":"<font style=\"FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">End standards</font>","col_2":"Gauge block: central length L","col_3":"125 mm to 1000 mm","col_4":"Orientation: Horizontal<br>Material : Steel<br>Wringing : Both Sides","col_5":"Q[49nm, 0.28e-6], L in mm","col_6":"<font style=\"FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">Interferometry exact fractions, Material: Steel</font>"}}
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
Approved on 03 November 2021
Institute service identifier : LE-WL-03
Pressure , Gauge pressure : 350 kPa to 7000 kPa

Pressure measurement device
Absolute expanded uncertainty : 5.1E1 Pa to 1.6E2 Pa
45 +1.7E-5p p pressure in Pa
The uncertainty is expressed in Pa
Gas medium
Approved on 13 May 2022
Mass , Mass : 1 mg to 100 mg
Mass standards
Absolute expanded uncertainty : 0.6 µg to 1 µg
Comparison in air
Approved on 16 September 2022
Institute service identifier : SASO-NMCC
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
{"row_1":{"col_1":"Frequency","col_2":"100 KHz to 30 MHz","col_3":"30 MHz to 2GHz","col_4":"2 GHz to 7 GHz","col_5":"8 GHz to 10 GHz","col_6":"11 GHz to 15 GHz","col_7":"15 GHz to 18 GHz"},"row_2":{"col_1":"Type N","col_2":"11","col_3":"9.8","col_4":"8.6","col_5":"9.8","col_6":"8.7","col_7":"11"}}
Direct measurement
Frequency range : 100 kHz to 18 GHz
Connector type : type N
Approved on 26 January 2022
Frequency , Frequency : 1 MHz to 10 MHz
Local frequency standard
Relative expanded uncertainty : 4.6E-13 Hz/Hz
{"row_1":{"col_1":"1 MHz, 5 MHz, <br>10 MHz<br><br>","col_2":"Sampling number: 60<br>\nMeasurement time: 1440 s","col_3":"4.6E-13<br><br>"}}
Phase measurement
Approved on 22 December 2021
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
Approved on 02 December 2021
Institute service identifier : EL-EM-04
Radiations of the mise en pratique , Absolute frequency : 474 THz
Frequency stabilized laser
Absolute expanded uncertainty : 2.4E1 kHz
{"row_1":{"col_1":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">Quantity</font>","col_2":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">Instrument/<br>Artefact<br>Instrument</font>","col_3":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">Measurement Range</font>","col_4":"<font style=\"FONT-WEIGHT: bold;FONT-FAMILY: Arial;FONT-SIZE: 9pt;COLOR: #000000;TEXT-ALIGN: center;\">Uncertainty</font>"},"row_2":{"col_1":"Laser radiations","col_2":"Frequency stabilized laser: absolute frequency","col_3":"474 THz","col_4":"24kHz"}}
Frequency stabilized laser
Approved on 03 November 2021
Institute service identifier : LE-WL-01
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
{"row_1":{"col_1":"","col_2":"Expanded uncertainty (mH/H)","col_3":"","col_4":"","col_5":"","col_6":"250"},"row_2":{"col_1":"<br>","col_2":"100 Hz","col_3":"200 Hz","col_4":"400 Hz","col_5":"1 kHz","col_6":"10 kHz"},"row_3":{"col_1":"100 µH","col_2":"320","col_3":"320","col_4":"320","col_5":"320","col_6":"320"},"row_4":{"col_1":"1 mH","col_2":"250","col_3":"250","col_4":"250","col_5":"250","col_6":"250"},"row_5":{"col_1":"10 mH","col_2":"250","col_3":"250","col_4":"250","col_5":"82","col_6":"250"},"row_6":{"col_1":"100 mH","col_2":"250","col_3":"250","col_4":"250","col_5":"82","col_6":"250"},"row_7":{"col_1":"1H","col_2":"210","col_3":"210","col_4":"210","col_5":"210","col_6":""},"row_8":{"col_1":"10 H","col_2":"210","col_3":"210","col_4":"210","col_5":"210","col_6":""}}
The expanded uncertainties given in this table are expressed in µH/H
STANDARD INDUCTOR CALIBRATION

WITH MAXWELL-WIEN BRIDGE
Frequency : 100 Hz to 10 kHz
temperature : 23 °C ± 1 °C
Approved on 23 December 2021
Institute service identifier : EL-IM-13
Impedance (up to the MHz range) , Inductance: self inductance, low values : 100 µH
Fixed inductor
Relative expanded uncertainty : 3.2E2 µH/H
{"row_1":{"col_1":"","col_2":"Expanded uncertainty (mH/H)","col_3":"","col_4":"<br>","col_5":"","col_6":""},"row_2":{"col_1":"","col_2":"100 Hz","col_3":"200 Hz","col_4":"400 Hz","col_5":"1 kHz","col_6":"10 kHz"},"row_3":{"col_1":"100 &nbsp;µH","col_2":"320","col_3":"320","col_4":"320","col_5":"320","col_6":"320"},"row_4":{"col_1":"1 mH","col_2":"250","col_3":"250","col_4":"250","col_5":"250","col_6":"250"},"row_5":{"col_1":"10 mH","col_2":"250","col_3":"250","col_4":"250","col_5":"82","col_6":"250"},"row_6":{"col_1":"100 mH","col_2":"250","col_3":"250","col_4":"250","col_5":"82","col_6":"250"},"row_7":{"col_1":"1H","col_2":"210","col_3":"210","col_4":"210","col_5":"210","col_6":"<br>"},"row_8":{"col_1":"10 H","col_2":"210","col_3":"210","col_4":"210","col_5":"210","col_6":"<br>"}}
The expanded uncertainties given in this table are expressed in µH/H
STANDARD INDUCTOR CALIBRATION

WITH MAXWELL-WIEN BRIDGE
Frequency : 100 Hz to 10 kHz
temperature : 23 °C ± 1 °C
Approved on 23 December 2021
Institute service identifier : EL-IM-13
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"
Approved on 23 December 2021
Institute service identifier : EL-PE-01
Frequency , Frequency : 0.1 Hz to 2.00E6 Hz
General frequency source
Relative expanded uncertainty : 5.0E-11 Hz
Externally triggered frequency counter
Average Time : 100 s
Approved on 27 May 2022
Frequency , Frequency : 2.00E6 Hz to 6.00E9 Hz
Frequency counter
Relative expanded uncertainty : 4.0E-12 Hz
Externally triggered frequency synthesizer
Average Time  : 100 s
Approved on 27 May 2022

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This metrology area covers the fields of laser frequencies and dimensional metrology.

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