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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
Uncertainty table
{"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
CMC ID :
GULFMET-EM-SA-00000LRE-1
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
CMC ID :
GULFMET-M-SA-00000LSE-1
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
CMC ID :
GULFMET-TF-SA-00000LS1-1
AC and DC 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
CMC ID :
GULFMET-EM-SA-00000LZD-1
AC and DC 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
CMC ID :
GULFMET-EM-SA-00000LZB-1
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
Uncertainty table
{"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
CMC ID :
GULFMET-L-SA-00000MK1-1
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
CMC ID :
GULFMET-EM-SA-00000MKG-1
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
CMC ID :
GULFMET-EM-SA-00000MKH-1
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
CMC ID :
GULFMET-EM-SA-00000MKF-1
Linear dimensions ,
End standards
:
125 mm to 1000 mm
Gauge block: central length L
Absolute expanded uncertainty
:
6.0E1 nm to 2.8E2 nm
Uncertainty table
{"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
CMC ID :
GULFMET-L-SA-00000MK2-1
Pressure ,
Gauge pressure
:
5 MPa to 100 MPa
Pressure measurement device
Absolute expanded uncertainty
:
7.1E2 Pa to 2.7E3 Pa
6E2 +2.1E-5p p pressure in Pa
The uncertainty is expressed in Pa
Oil medium
Approved on 20 February 2023
CMC ID :
GULFMET-M-SA-00000N3C-1
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
CMC ID :
GULFMET-M-SA-00000NU2-1
Form ,
Roundness standards
:
0 µm to 300 µm
Internal cylinder: roundness R
Absolute expanded uncertainty
:
4.2E1 nm to 6.0E3 nm
Q[42 nm; 20E-3 R]
Roundness instrument
Diameter : up to 300 mm
Approved on 29 December 2022
CMC ID :
GULFMET-L-SA-00000O36-1
Density ,
Density
:
600 kg/m3 to 610 kg/m3
Hydrometers
Absolute expanded uncertainty
:
7.0E-2 kg/m3
Cuckow method (Hydrostatic weighing)
Approved on 23 April 2024
Institute service identifier : SASO-NMCC
CMC ID :
GULFMET-M-SA-00000PRI-1
Linear dimensions ,
central length L
:
0.5 mm to 100 mm
Gauge block: central length L
Absolute expanded uncertainty
:
5.6E1 nm to 9.0E1 nm
Q [56 nm, 0.7 L] The uncertainty is expressed in nm Where L in mm
Gauge blocks comparison by mechanical comparison method
ISO 3650:1998(E)
Approved on 18 October 2024
CMC ID :
GULFMET-L-SA-00000PZG-1
Linear dimensions ,
Gauge block comparators: error of indicated displacement
:
0 µm to 10 µm
Gauge block comparator
Absolute expanded uncertainty
:
3.0E1 nm
Comparison to special gauge blocks
ISO 3650:1998(E)
Length : Up to 100 mm
Approved on 18 October 2024
CMC ID :
GULFMET-L-SA-00000PZI-1
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
-70 °C to -35 °C
Platinum Resistance Thermometer
Absolute expanded uncertainty
:
2.4E1 mK to 1.2E1 mK
Calibration by comparison at one temperature
Approved on 19 March 2025
CMC ID :
GULFMET-T-SA-00000Q69-1
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
100 °C to 200 °C
Platinum Resistance Thermometer
Absolute expanded uncertainty
:
1.8E1 mK
Calibration by comparison at one temperature
Approved on 19 March 2025
CMC ID :
GULFMET-T-SA-00000Q6D-1
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
Uncertainty table
{"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
CMC ID :
GULFMET-EM-SA-00000LRC-1
Frequency ,
Frequency
:
1 MHz to 10 MHz
Local frequency standard
Relative expanded uncertainty
:
4.6E-13 Hz/Hz
Uncertainty table
{"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
CMC ID :
GULFMET-TF-SA-00000LRX-1
