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General physics
Ionizing radiation
Chemical material
Chemical Analyte
Geographical location
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)
China, NIM (National Institute of Metrology)
High voltage and current , High DC current: average value : 6 kA to 150 kA
Optical current sensor
Relative expanded uncertainty : 0.5 mA/A to 1 mA/A
Uncertainty table
{"row_1":{"col_1":"<br>","col_2":"Relative expanded uncertainty<br>&nbsp;/（mA/A）"},"row_2":{"col_1":"6kA to 30kA","col_2":"0.5"},"row_3":{"col_1":"30kA to 150kA<br>","col_2":"<sup>​​​​​​​1</sup>"}}
Equal ampere-turns method
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.7.4
CMC ID : APMP-EM-CN-00000N5F-1
 
High voltage and current , High AC current: current transformer ratio error : -0.1 % to 0.1 %
Current comparator and current transformers
Absolute expanded uncertainty : 3.0E-6 to 5.0E-6
Uncertainty table
{"row_1":{"col_1":"Current（A）","col_2":"&nbsp;Ratio error","col_3":"Phase displacement(μrad)<br>"},"row_2":{"col_1":"0.5-50","col_2":"3E-6","col_3":"3"},"row_3":{"col_1":"50-2000<br>","col_2":"5E-6","col_3":"5"}}
Direct comparison
Frequency : 50 Hz
Current ratio : 0.0025 - 10
Current : 0.5 A to 2000 A
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.6.3a
CMC ID : APMP-EM-CN-00000N5D-1
 
High voltage and current , High voltage impedance: capacitance : 10 pF to 1.00E4 pF
Compressed gas capacitor, capacitor for high voltage
Relative expanded uncertainty : 1.0E1 µF/F to 5.0E1 µF/F
Uncertainty table
{"row_1":{"col_1":"","col_2":"1 kV to 2 kV","col_3":"2.1 kV to 10 kV"},"row_2":{"col_1":"10 pF to 40 pF","col_2":"10","col_3":"25"},"row_3":{"col_1":"41 pF to 1000 pF","col_2":"10","col_3":"10"},"row_4":{"col_1":"1001 pF to 4000 pF","col_2":"10","col_3":"20"},"row_5":{"col_1":"4001 pF to 10000 pF","col_2":"10","col_3":"50"}}
The expanded uncertainties given in this table are expressed in µF/F
Direct comparison
Voltage : 1 kV to 10 kV
Frequency : 40 Hz to 60 Hz
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.2.1a
CMC ID : APMP-EM-CN-000008BX-2
 
High voltage and current , High DC voltage: ratios : 1.00E-5 to 1
High voltage resistive divider, DC high voltage probe
Relative expanded uncertainty : 1.0E-5
Comparison with reference resistive divider
Input voltage : 1 kV to 100 kV  
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.1.3
CMC ID : APMP-EM-CN-000008BW-2
 
AC power , AC power and energy: single phase (f <= 400 Hz), active power : 0.06 MW to 10 MW
High voltage wattmeter
Relative expanded uncertainty : 2.0E2 µW/VA
Comparison with reference standard
Voltage : 6 kV to 10 kV
Current : 10 A to 1000 A
Power factor : 1 to 0.5, inductive or capacitive
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 15 February 2022
Institute service identifier : NIM/7.1.1g
CMC ID : APMP-EM-CN-00000N40-1
 
High voltage and current , Impulse voltage and current: lightning impulse voltage time to half value : 40 µs to 60 µs
Lightning impulse voltage measuring system
Relative expanded uncertainty : 1.0E1 ms/s to 1.5E1 ms/s
Uncertainty table
{"row_1":{"col_1":"<br>","col_2":"Test voltage (mV/V)","col_3":"Front time (ms/s)","col_4":"Time to half value (ms/s)<br>"},"row_2":{"col_1":"1 kV to 400 kV","col_2":"4","col_3":"15","col_4":"10"},"row_3":{"col_1":"400 kV to 700 kV<br>","col_2":"5","col_3":"20","col_4":"15"}}
Intercomparison
Full Lightning Impulse voltage : According to IEC 60060-1
Voltage : 0.01 kV to 700 kV
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.4.1c
CMC ID : APMP-EM-CN-00000N58-1
 
High voltage and current , Impulse voltage and current: lightning impulse voltage test voltage value : 1 kV to 700 kV
Lightning impulse voltage measuring system
Relative expanded uncertainty : 4 mV/V to 5 mV/V
Uncertainty table
{"row_1":{"col_1":"<br>","col_2":"Test voltage (mV/V)","col_3":"Front time (ms/s)<br>","col_4":"Time to half value (ms/s)"},"row_2":{"col_1":"1 kV to 400 kV","col_2":"4","col_3":"15","col_4":"10"},"row_3":{"col_1":"400 kV to 700 kV","col_2":"5","col_3":"20","col_4":"15"}}
Intercomparison
Full or Tail-chopped Lightning Impulse voltage : According to IEC 60060-1
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.4.1a
CMC ID : APMP-EM-CN-00000N56-1
 
High voltage and current , High AC voltage: voltage transformer ratio error : 0 to 2.00E-4
AC voltage transformers
Absolute expanded uncertainty : 2.0E-6 to 5.0E-6
Uncertainty table
{"row_1":{"col_1":"Ratio(kV/kV)","col_2":"&nbsp;Ratio error","col_3":"Phase displacement(μrad)"},"row_2":{"col_1":"1/0.1","col_2":"2E-6","col_3":"1"},"row_3":{"col_1":"10/0.1","col_2":"2E-6","col_3":"3"},"row_4":{"col_1":"35/0.1<br>","col_2":"4E-6","col_3":"4"},"row_5":{"col_1":"(110/1.73)/0.1<br>","col_2":"5E-6","col_3":"5"}}
Comparison
Frequency : 50 Hz, 60 Hz
Voltage ratio : （1/0.1） kV/kV  to (110/1.73)/0.1 kV/kV
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.3.4a
CMC ID : APMP-EM-CN-00000N54-1
 
High voltage and current , Impulse voltage and current: lightning impulse voltage time to chopping : 0.4 µs to 2 µs
Lightning impulse voltage measuring system
Relative expanded uncertainty : 2.0E1 ms/s to 2.5E1 ms/s
Uncertainty table
{"row_1":{"col_1":"","col_2":"Peak voltage (mV/V)<br>","col_3":"Time to chopping (ms/s)<br>"},"row_2":{"col_1":"1 kV to 400 kV","col_2":"10","col_3":"20"},"row_3":{"col_1":"400 kV to 700 kV<br>","col_2":"15","col_3":"25"}}
Intercomparison
Front chopped Lightning Impulse voltage : According to IEC 60060-1
Voltage : 0.01 kV to 700 kV
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.4.1e
CMC ID : APMP-EM-CN-00000N5B-1
 
High voltage and current , High AC current: current transformer phase displacement : -1 mrad to 1 mrad
Current comparator and current transformers
Absolute expanded uncertainty : 3 µrad to 5 µrad
Uncertainty table
{"row_1":{"col_1":"Current（A）","col_2":"Ratio error","col_3":"Phase displacement(μrad)<br>"},"row_2":{"col_1":"0.5-50","col_2":"3E-6","col_3":"3"},"row_3":{"col_1":"50-2000<br>","col_2":"5E-6","col_3":"5"}}
Direct comparison
Frequency : 50 Hz
Current ratio : 0.0025 - 10
Current : 0.5 A to 2000A
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.6.3b
CMC ID : APMP-EM-CN-00000N5E-1
 
High voltage and current , High AC current: RMS value : 6 kA to 50 kA
Optical current sensor,rogowski coil
Relative expanded uncertainty : 1 mA/A
Equal ampere-turns method
Frequency : 50 Hz
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.6.5
CMC ID : APMP-EM-CN-00000N5G-1
 
AC power , AC power and energy: three phase (f <= 400 Hz), active power : 0.18 MW to 30 MW
High voltage wattmeter
Relative expanded uncertainty : 2.0E2 µW/VA
Comparison with reference standard
Voltage : 6 kV to 10 kV
Current : 10 A to 1000 A
Power factor : 1 to 0.5, inductive or capacitive
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 15 February 2022
Institute service identifier : NIM/7.1.3g
CMC ID : APMP-EM-CN-00000N41-1
 
High voltage and current , High voltage impedance: dissipation factor for capacitance : 0 to 1.00E-4
Compressed gas capacitor for high voltage
Absolute expanded uncertainty : 1.5E-5
Comparison
Voltage : 10 kV to 150 kV
Frequency : 50 Hz, 60 Hz
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.2.1d
CMC ID : APMP-EM-CN-00000N52-1
 
High voltage and current , High voltage impedance: capacitance : 20 pF to 1000 pF
Compressed gas capacitor for high voltage
Relative expanded uncertainty : 1.5E1 µF/F
Comparison
Voltage : 10 kV to 150 kV
Frequency : 50 Hz, 60 Hz
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.2.1c
CMC ID : APMP-EM-CN-00000N4V-1
 
High voltage and current , Impulse voltage and current: lightning impulse voltage front time : 0.84 µs to 1.56 µs
Lightning impulse voltage measuring system
Relative expanded uncertainty : 1.5E1 ms/s to 2.0E1 ms/s
Uncertainty table
{"row_1":{"col_1":"<br>","col_2":"Test voltage (mV/V)","col_3":"Front time (ms/s)<br>","col_4":"Time to half value (ms/s)<br>"},"row_2":{"col_1":"1 kV to 400 kV<br>","col_2":"4","col_3":"15","col_4":"10"},"row_3":{"col_1":"400 kV to 700 kV","col_2":"5","col_3":"20","col_4":"15"}}
Intercomparison
Full or Tail-chopped Lightning Impulse voltage : According to IEC 60060-1
Voltage : 0.01 kV to 700 kV
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.4.1b
CMC ID : APMP-EM-CN-00000N57-1
 
High voltage and current , Impulse voltage and current: lightning impulse extreme voltage value : 1 kV to 700 kV
Lightning impulse voltage measuring system
Relative expanded uncertainty : 1.0E1 mV/V to 1.5E1 mV/V
Uncertainty table
{"row_1":{"col_1":"<br>","col_2":"Peak voltage (mV/V)<br>","col_3":"Time to chopping (ms/s)<br>"},"row_2":{"col_1":"1 kV to 400 kV","col_2":"10","col_3":"20"},"row_3":{"col_1":"400 kV to 700 kV<br>","col_2":"15","col_3":"25"}}
Intercomparison
Front chopped Lightning Impulse voltage : According to IEC 60060-1
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.4.1d
CMC ID : APMP-EM-CN-00000N5A-1
 
High voltage and current , High AC voltage: voltage transformer phase displacement : 0 mrad to 0.2 mrad
AC voltage transformers
Absolute expanded uncertainty : 1 µrad to 5 µrad
Uncertainty table
{"row_1":{"col_1":"Ratio(kV/kV)","col_2":"&nbsp;Ratio error","col_3":"Phase displacement(μrad)<br>"},"row_2":{"col_1":"1/0.1","col_2":"2E-6","col_3":"1"},"row_3":{"col_1":"10/0.1","col_2":"2E-6","col_3":"3"},"row_4":{"col_1":"35/0.1","col_2":"4E-6","col_3":"4"},"row_5":{"col_1":"(110/1.73)/0.1","col_2":"5E-6<br>","col_3":"5"}}
Comparison
Frequency : 50 Hz, 60 Hz
Voltage ratio : （1/0.1） kV/kV  to (110/1.73)/0.1 kV/kV
Peer reviewed by Dr. ir. Gert Rietveld / VSL/ Netherlands / Dec. 2018
Approved on 04 November 2021
Institute service identifier : NIM/8.3.4b
CMC ID : APMP-EM-CN-00000N55-1
 
Netherlands, VSL (VSL)
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in % Absolute expanded uncertainty in % Mass fraction in
high purity 1,2,3-trimethylbenzene 1,2,3-trimethylbenzene 95 to 100 0.5 to 0.1
  • Mechanism for measurement service delivery : Calibration
  • Approved on 17 May 2020
  • Institute service identifier : HPur07
  • CMC ID : EURAMET-QM-NL-0000002T-2
     
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Mass fraction in % Absolute expanded uncertainty in % Mass fraction in
high purity 1,2,4-trimethylbenzene 1,2,4-trimethylbenzene 95 to 100 0.5 to 0.1
  • Mechanism for measurement service delivery : Calibration
  • Approved on 17 May 2020
  • Institute service identifier : HPur09
  • CMC ID : EURAMET-QM-NL-0000002V-2
     
Matrix or material Analyte or component Dissemination range of measurement capability Range of certified values in reference materials
Amount-of-substance fraction in nmol/mol Relative expanded uncertainty in % Amount-of-substance fraction in nmol/mol Relative expanded uncertainty in %
nitrogen 1,2,4-trimethylbenzene 2 to 1000 5 2 to 1000 5
nitrogen 1,3,5-trimethylbenzene 2 to 1000 5 2 to 1000 5
nitrogen 1,3-butadiene 2 to 1000 6 2 to 1000 6
nitrogen 1-butene 2 to 1000 3 2 to 1000 3
nitrogen 1-pentene 2 to 1000 3 2 to 1000 3
nitrogen 2,2,4-trimethylpentane 2 to 1000 3 2 to 1000 3
nitrogen 2-methyl-1,3-butadiene 2 to 1000 3 2 to 1000 3
nitrogen 2-methylpentane 2 to 1000 3 2 to 1000 3
nitrogen 3-methylpentane 2 to 1000 3 2 to 1000 3
nitrogen acetylene 2 to 1000 6 2 to 1000 6
nitrogen benzene 2 to 2.50E4 2 2 to 2.50E4 2
nitrogen cis-2-butene 2 to 1000 3 2 to 1000 3
nitrogen cis-2-pentene 2 to 1000 3 2 to 1000 3
nitrogen ethane 2 to 1000 3 2 to 1000 3
nitrogen ethene 2 to 1000 3 2 to 1000 3
nitrogen ethylbenzene 2 to 2.50E4 3 2 to 2.50E4 3
nitrogen isobutane 2 to 1000 3 2 to 1000 3
nitrogen isobutylene 2 to 1000 3 2 to 1000 3
nitrogen isopentane 2 to 1000 3 2 to 1000 3
nitrogen m-xylene 2 to 2.50E4 4 to 3 2 to 2.50E4 4 to 3
nitrogen n-butane 2 to 1000 3 2 to 1000 3
nitrogen n-heptane 2 to 1000 3 2 to 1000 3
nitrogen n-hexane 2 to 1000 3 2 to 1000 3
nitrogen n-octane 2 to 1000 3 2 to 1000 3
nitrogen n-pentane 2 to 1000 3 2 to 1000 3
nitrogen o-xylene 2 to 2.50E4 4 to 3 2 to 2.50E4 4 to 3
nitrogen p-xylene 2 to 2.50E4 4 to 3 2 to 2.50E4 4 to 3
nitrogen propane 2 to 1000 3 2 to 1000 3
nitrogen propene 2 to 1000 3 2 to 1000 3
nitrogen toluene 2 to 2.50E4 2 2 to 2.50E4 2
nitrogen trans-2-butene 2 to 1000 3 2 to 1000 3
nitrogen trans-2-pentene 2 to 1000 3 2 to 1000 3
  • Mechanism for measurement service delivery : Primary gravimetric gas standards (ISO6142), calibration of customer mixtures (ISO6143) and calibration of analyzers
  • Approved on 02 May 2024
  • Institute service identifier : 312163
  • CMC ID : EURAMET-QM-NL-000002X5-3,EURAMET-QM-NL-000002X4-3,EURAMET-QM-NL-000002WI-3,EURAMET-QM-NL-000002WJ-3,EURAMET-QM-NL-00000OHD-1,EURAMET-QM-NL-00000OHE-1,EURAMET-QM-NL-000002WP-3,EURAMET-QM-NL-000002WW-3,EURAMET-QM-NL-000002WV-3,EURAMET-QM-NL-00000OHC-1,EURAMET-QM-NL-000002WY-3,EURAMET-QM-NL-000002WK-3,EURAMET-QM-NL-000002WQ-3,EURAMET-QM-NL-000002WF-3,EURAMET-QM-NL-000002WE-2,EURAMET-QM-NL-000002X0-3,EURAMET-QM-NL-000002WN-3,EURAMET-QM-NL-000002WM-3,EURAMET-QM-NL-000002WS-3,EURAMET-QM-NL-000002X1-3,EURAMET-QM-NL-000002WO-3,EURAMET-QM-NL-000002WX-3,EURAMET-QM-NL-000002WU-3,EURAMET-QM-NL-000002X6-3,EURAMET-QM-NL-000002WT-3,EURAMET-QM-NL-000002X3-3,EURAMET-QM-NL-000002X2-3,EURAMET-QM-NL-000002WH-3,EURAMET-QM-NL-000002WG-3,EURAMET-QM-NL-000002WZ-3,EURAMET-QM-NL-000002WL-3,EURAMET-QM-NL-000002WR-3,EURAMET-QM-NL-000002X4-3,EURAMET-QM-NL-000002WI-3,EURAMET-QM-NL-000002WJ-3,EURAMET-QM-NL-00000OHD-1,EURAMET-QM-NL-00000OHE-1,EURAMET-QM-NL-000002WP-3,EURAMET-QM-NL-000002WW-3,EURAMET-QM-NL-000002WV-3,EURAMET-QM-NL-00000OHC-1,EURAMET-QM-NL-000002WY-3,EURAMET-QM-NL-000002WK-3,EURAMET-QM-NL-000002WQ-3,EURAMET-QM-NL-000002WF-3,EURAMET-QM-NL-000002WE-2,EURAMET-QM-NL-000002X0-3,EURAMET-QM-NL-000002WN-3,EURAMET-QM-NL-000002WM-3,EURAMET-QM-NL-000002WS-3,EURAMET-QM-NL-000002X1-3,EURAMET-QM-NL-000002WO-3,EURAMET-QM-NL-000002WX-3,EURAMET-QM-NL-000002WU-3,EURAMET-QM-NL-000002X6-3,EURAMET-QM-NL-000002WT-3,EURAMET-QM-NL-000002X3-3,EURAMET-QM-NL-000002X2-3,EURAMET-QM-NL-000002WH-3,EURAMET-QM-NL-000002WG-3,EURAMET-QM-NL-000002WZ-3,EURAMET-QM-NL-000002WL-3,EURAMET-QM-NL-000002WR-3
     

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