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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)
Austria, BEV (Bundesamt für Eich- und Vermessungswesen)
Time scale difference ,
Time scale difference
:
-1 s to 1 s
Local clock vs UTC
Absolute expanded uncertainty
:
5.0E1 ns
Time interval counter + CV GPS measurements
Prediction interval : 20 days
Fractional part of modulo 1 second difference, integer part can be provided also.
Approved on 21 April 2005
Institute service identifier : BEV_TF_2
CMC ID :
EURAMET-TF-AT-00000B1U-1
Items for defining ITS-90 ,
Temperature
:
419.527 °C
Freezing point of Zinc
Absolute expanded uncertainty
:
1.6 mK
Direct comparison
Aluminium powder bath
Approved on 20 May 2010
Institute service identifier : BEV/6
CMC ID :
EURAMET-T-AT-00000BL1-1
Items for defining ITS-90 ,
Temperature
:
231.928 °C
Freezing point of Tin
Absolute expanded uncertainty
:
1.4 mK
Direct comparison
Aluminium powder bath
Approved on 20 May 2010
Institute service identifier : BEV/5
CMC ID :
EURAMET-T-AT-00000BL0-1
AC and DC power ,
AC power and energy: three phase, apparent energy
:
20 VAs to 1.80E7 VAs
Energy meter
Relative expanded uncertainty
:
8.0E1 µVAs (VAs)-1 to 2.2E2 µVAs (VAs)-1
Uncertainty table
{"row_1":{"col_1":"","col_2":"50 Hz to 60 Hz"},"row_2":{"col_1":"0.005 A to 0.05 A","col_2":"220"},"row_3":{"col_1":"> 0.05 A to 120 A","col_2":"80"}}
Comparison with reference standard
Voltage : 50 V to 500 V
Current : 0.005 A to 120 A
Power factor : 1 to 0.25, inductive or capacitive
Frequency : 50 Hz to 60 Hz
Measuring time : 100 s to 10000 s
Measurand range values valid for a typical measurement time of 100 s.
Approved on 07 February 2019
Institute service identifier : BEV/38b3
CMC ID :
EURAMET-EM-AT-00000DSY-1
AC and DC power ,
AC power and energy: single phase (frequency <= 400 Hz), reactive energy
:
6.5 var s to 6.00E6 var s
Energy meter
Relative expanded uncertainty
:
8.0E1 µvar s (VAs)-1 to 4.2E2 µvar s (VAs)-1
Uncertainty table
{"row_1":{"col_1":"","col_2":"16.7 Hz","col_3":"50 Hz to 60 Hz"},"row_2":{"col_1":"0.005 A to 0.05 A","col_2":"-","col_3":"220"},"row_3":{"col_1":"> 0.05 A to 120 A","col_2":"420","col_3":"80"}}
Comparison with reference standard
Voltage : 50 V to 500 V
Current : 0.005 A to 120 A
Power factor : 1 to 0.25, inductive or capacitive
Frequency : 16.7 Hz, 50 Hz to 60 Hz
Measuring time : 100 s to 10000 s
Approved on 07 February 2019
Institute service identifier : BEV/37b2
CMC ID :
EURAMET-EM-AT-00000DSR-1
AC and DC power ,
AC power and energy: three phase, apparent power
:
0.2 VA to 1.80E5 VA
Power meter
Relative expanded uncertainty
:
8.0E1 µVA (VA)-1 to 2.2E2 µVA (VA)-1
Uncertainty table
{"row_1":{"col_1":"","col_2":"50 Hz to 60 Hz"},"row_2":{"col_1":"0.005 A to 0.05 A","col_2":"220"},"row_3":{"col_1":"> 0.05 A to 120 A","col_2":"80"}}
Comparison with reference standard
Voltage : 50 V to 500 V
Current : 0.005 A to 120 A
Power factor : 1 to 0.25, inductive or capacitive
Frequency : 50 Hz to 60 Hz
Approved on 07 February 2019
Institute service identifier : BEV/38a3
CMC ID :
EURAMET-EM-AT-00000DSV-1
High voltage and current ,
High AC voltage: voltage transformer ratio error
:
0 to 0.02
Voltage transformer
Absolute expanded uncertainty
:
5.0E-5
Comparison with reference standard
Primary voltage : 0.1 kV to 254 kV
Secondary voltage : 100/1.73 V, 110/1.73 V, 100 V, 110 V, 200/1.73 V, 200 V
Frequency : 50 Hz
Approved on 06 August 2013
Institute service identifier : BEV/39
CMC ID :
EURAMET-EM-AT-00000DS8-1
AC current ,
AC current: AC/DC current transfer
:
1.00E-3 A to 100 A
Thermal converter plus shunt, AC/DC transfer standard plus shunt
Relative expanded uncertainty
:
4 µA/A to 1.0E2 µA/A
Uncertainty table
{"row_1":{"col_1":"","col_2":"10 Hz to 1 kHz","col_3":"5 kHz","col_4":"10 kHz","col_5":"20 kHz","col_6":"30 kHz","col_7":"50 kHz","col_8":"70 kHz","col_9":"100 kHz","col_10":"200 kHz","col_11":"500 kHz","col_12":"700 kHz","col_13":"1 MHz"},"row_2":{"col_1":"1 mA","col_2":"13","col_3":"13","col_4":"13","col_5":"14","col_6":"15","col_7":"17","col_8":"20","col_9":"22","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_3":{"col_1":"5 mA","col_2":"5","col_3":"5","col_4":"5","col_5":"5","col_6":"7","col_7":"8","col_8":"10","col_9":"12","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_4":{"col_1":"10 mA","col_2":"4","col_3":"4","col_4":"4","col_5":"4","col_6":"5","col_7":"5","col_8":"7","col_9":"9","col_10":"25","col_11":"50","col_12":"75","col_13":"100"},"row_5":{"col_1":"20 mA","col_2":"5","col_3":"5","col_4":"5","col_5":"5","col_6":"5","col_7":"6","col_8":"8","col_9":"10","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_6":{"col_1":"30 mA","col_2":"5","col_3":"5","col_4":"5","col_5":"6","col_6":"6","col_7":"7","col_8":"9","col_9":"11","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_7":{"col_1":"50 mA","col_2":"6","col_3":"6","col_4":"6","col_5":"7","col_6":"7","col_7":"8","col_8":"10","col_9":"12","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_8":{"col_1":"100 mA","col_2":"7","col_3":"7","col_4":"7","col_5":"7","col_6":"8","col_7":"8","col_8":"11","col_9":"13","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_9":{"col_1":"200 mA","col_2":"7","col_3":"7","col_4":"7","col_5":"8","col_6":"8","col_7":"9","col_8":"11","col_9":"14","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_10":{"col_1":"300 mA","col_2":"7","col_3":"7","col_4":"7","col_5":"8","col_6":"9","col_7":"10","col_8":"13","col_9":"16","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_11":{"col_1":"500 mA","col_2":"7","col_3":"7","col_4":"8","col_5":"8","col_6":"9","col_7":"11","col_8":"15","col_9":"18","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_12":{"col_1":"1 A","col_2":"8","col_3":"8","col_4":"8","col_5":"9","col_6":"9","col_7":"12","col_8":"16","col_9":"20","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_13":{"col_1":"2 A","col_2":"9","col_3":"9","col_4":"9","col_5":"10","col_6":"11","col_7":"13","col_8":"18","col_9":"22","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_14":{"col_1":"5 A","col_2":"9","col_3":"9","col_4":"10","col_5":"10","col_6":"11","col_7":"14","col_8":"19","col_9":"24","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_15":{"col_1":"10 A","col_2":"11","col_3":"11","col_4":"12","col_5":"13","col_6":"15","col_7":"18","col_8":"24","col_9":"30","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_16":{"col_1":"20 A","col_2":"12","col_3":"12","col_4":"13","col_5":"14","col_6":"17","col_7":"21","col_8":"28","col_9":"37","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_17":{"col_1":"50 A","col_2":"13","col_3":"14","col_4":"16","col_5":"18","col_6":"20","col_7":"28","col_8":"40","col_9":"53","col_10":"-","col_11":"-","col_12":"-","col_13":"-"},"row_18":{"col_1":"100 A","col_2":"15","col_3":"17","col_4":"20","col_5":"23","col_6":"31","col_7":"40","col_8":"59","col_9":"80","col_10":"-","col_11":"-","col_12":"-","col_13":"-"}}
Comparison with reference standard
Frequency : 10 Hz to 1 MHz
Approved on 06 January 2015
Institute service identifier : BEV/31
CMC ID :
EURAMET-EM-AT-00000DT3-1
AC voltage (up to the MHz range) ,
AC voltage: AC/DC transfer difference at medium voltage
:
0.5 V to 2 V
Thermal converter, AC-DC transfer standard
Relative expanded uncertainty
:
4 µV/V to 5.8E1 µV/V
Uncertainty table
{"row_1":{"col_1":"","col_2":"10 Hz to 30 Hz","col_3":"40 Hz to 10 kHz","col_4":"20 kHz","col_5":"50 kHz","col_6":"100 kHz","col_7":"200 kHz","col_8":"500 kHz","col_9":"700 kHz","col_10":"1 MHz"},"row_2":{"col_1":"2 mV","col_2":"200","col_3":"200","col_4":"200","col_5":"200","col_6":"210","col_7":"220","col_8":"240","col_9":"270","col_10":"350"},"row_3":{"col_1":"10 mV","col_2":"60","col_3":"60","col_4":"60","col_5":"60","col_6":"70","col_7":"90","col_8":"120","col_9":"150","col_10":"200"},"row_4":{"col_1":"100 mV","col_2":"20","col_3":"20","col_4":"22","col_5":"25","col_6":"30","col_7":"35","col_8":"70","col_9":"90","col_10":"120"},"row_5":{"col_1":"200 mV","col_2":"8","col_3":"8","col_4":"8","col_5":"8","col_6":"10","col_7":"14","col_8":"20","col_9":"40","col_10":"80"},"row_6":{"col_1":"500 mV","col_2":"6","col_3":"6","col_4":"6","col_5":"6","col_6":"8","col_7":"12","col_8":"16","col_9":"30","col_10":"50"},"row_7":{"col_1":"1 V","col_2":"4","col_3":"4","col_4":"4","col_5":"4","col_6":"6","col_7":"8","col_8":"12","col_9":"24","col_10":"34"},"row_8":{"col_1":"2 V","col_2":"4","col_3":"4","col_4":"4","col_5":"6","col_6":"6","col_7":"10","col_8":"16","col_9":"30","col_10":"58"},"row_9":{"col_1":"5 V","col_2":"6","col_3":"6","col_4":"8","col_5":"8","col_6":"10","col_7":"14","col_8":"20","col_9":"32","col_10":"80"},"row_10":{"col_1":"10 V","col_2":"8","col_3":"8","col_4":"10","col_5":"10","col_6":"12","col_7":"16","col_8":"24","col_9":"46","col_10":"80"},"row_11":{"col_1":"20 V","col_2":"10","col_3":"10","col_4":"10","col_5":"10","col_6":"12","col_7":"16","col_8":"28","col_9":"56","col_10":"80"},"row_12":{"col_1":"50 V","col_2":"10","col_3":"10","col_4":"12","col_5":"12","col_6":"14","col_7":"18","col_8":"30","col_9":"64","col_10":"80"},"row_13":{"col_1":"100 V","col_2":"12","col_3":"12","col_4":"14","col_5":"14","col_6":"16","col_7":"20","col_8":"-","col_9":"-","col_10":"-"},"row_14":{"col_1":"200 V","col_2":"14","col_3":"14","col_4":"14","col_5":"14","col_6":"16","col_7":"-","col_8":"-","col_9":"-","col_10":"-"},"row_15":{"col_1":"500 V","col_2":"-","col_3":"18","col_4":"20","col_5":"22","col_6":"30","col_7":"-","col_8":"-","col_9":"-","col_10":"-"},"row_16":{"col_1":"1000 V","col_2":"-","col_3":"20","col_4":"32","col_5":"-","col_6":"-","col_7":"-","col_8":"-","col_9":"-","col_10":"-"}}
Comparison with reference standard
Frequency : 10 Hz to 1 MHz
Approved on 06 January 2015
Institute service identifier : BEV/22b
CMC ID :
EURAMET-EM-AT-00000DT1-1
AC voltage (up to the MHz range) ,
AC voltage up to 1000 V: meters
:
0.1 V to 1000 V
AC voltmeter, multimeter, multifunction transfer standard
Relative expanded uncertainty
:
1.8E1 µV/V to 1.2E3 µV/V
Uncertainty table
{"row_1":{"col_1":"","col_2":"10 Hz","col_3":"20 Hz","col_4":"30 Hz","col_5":"40 Hz","col_6":"55 Hz","col_7":"1 kHz","col_8":"10 kHz","col_9":"20 kHz","col_10":"50 kHz","col_11":"100 kHz","col_12":"200 kHz","col_13":"500 kHz","col_14":"700 kHz","col_15":"1 MHz"},"row_2":{"col_1":"100 mV","col_2":"110","col_3":"80","col_4":"75","col_5":"75","col_6":"70","col_7":"70","col_8":"70","col_9":"70","col_10":"74","col_11":"110","col_12":"200","col_13":"440","col_14":"1200","col_15":"1200"},"row_3":{"col_1":"200 mV","col_2":"100","col_3":"70","col_4":"60","col_5":"60","col_6":"55","col_7":"55","col_8":"55","col_9":"55","col_10":"55","col_11":"90","col_12":"180","col_13":"390","col_14":"1200","col_15":"1200"},"row_4":{"col_1":"500 mV","col_2":"80","col_3":"45","col_4":"40","col_5":"40","col_6":"40","col_7":"40","col_8":"40","col_9":"40","col_10":"45","col_11":"75","col_12":"160","col_13":"340","col_14":"1200","col_15":"1200"},"row_5":{"col_1":"1 V","col_2":"32","col_3":"22","col_4":"20","col_5":"20","col_6":"20","col_7":"20","col_8":"20","col_9":"20","col_10":"20","col_11":"30","col_12":"54","col_13":"110","col_14":"370","col_15":"370"},"row_6":{"col_1":"2 V","col_2":"34","col_3":"22","col_4":"20","col_5":"20","col_6":"18","col_7":"18","col_8":"18","col_9":"18","col_10":"20","col_11":"30","col_12":"55","col_13":"110","col_14":"370","col_15":"380"},"row_7":{"col_1":"5 V","col_2":"40","col_3":"30","col_4":"25","col_5":"25","col_6":"25","col_7":"25","col_8":"25","col_9":"25","col_10":"25","col_11":"40","col_12":"70","col_13":"190","col_14":"520","col_15":"630"},"row_8":{"col_1":"10 V","col_2":"40","col_3":"30","col_4":"25","col_5":"25","col_6":"25","col_7":"25","col_8":"25","col_9":"25","col_10":"25","col_11":"40","col_12":"70","col_13":"190","col_14":"520","col_15":"630"},"row_9":{"col_1":"20 V","col_2":"40","col_3":"30","col_4":"25","col_5":"25","col_6":"25","col_7":"25","col_8":"25","col_9":"25","col_10":"25","col_11":"40","col_12":"70","col_13":"190","col_14":"520","col_15":"630"},"row_10":{"col_1":"50 V","col_2":"50","col_3":"30","col_4":"25","col_5":"25","col_6":"25","col_7":"25","col_8":"25","col_9":"25","col_10":"25","col_11":"42","col_12":"80","col_13":"-","col_14":"-","col_15":"-"},"row_11":{"col_1":"100 V","col_2":"50","col_3":"35","col_4":"30","col_5":"30","col_6":"25","col_7":"25","col_8":"27","col_9":"27","col_10":"30","col_11":"45","col_12":"-","col_13":"-","col_14":"-","col_15":"-"},"row_12":{"col_1":"200 V","col_2":"60","col_3":"40","col_4":"35","col_5":"30","col_6":"30","col_7":"25","col_8":"27","col_9":"27","col_10":"30","col_11":"45","col_12":"-","col_13":"-","col_14":"-","col_15":"-"},"row_13":{"col_1":"500 V","col_2":"-","col_3":"-","col_4":"-","col_5":"35","col_6":"35","col_7":"35","col_8":"35","col_9":"35","col_10":"65","col_11":"210","col_12":"-","col_13":"-","col_14":"-","col_15":"-"},"row_14":{"col_1":"1000 V","col_2":"-","col_3":"-","col_4":"-","col_5":"45","col_6":"45","col_7":"40","col_8":"50","col_9":"-","col_10":"-","col_11":"-","col_12":"-","col_13":"-","col_14":"-","col_15":"-"}}
AC/DC transfer standard
Frequency : 10 Hz to 1 MHz
Approved on 06 August 2013
Institute service identifier : BEV/28
CMC ID :
EURAMET-EM-AT-00000DTB-1
DC resistance ,
DC resistance standards and sources: high values
:
1 MΩ to 1000 MΩ
Fixed resistor, resistance box
Relative expanded uncertainty
:
6 µΩ/Ω to 9.0E1 µΩ/Ω
Uncertainty table
{"row_1":{"col_1":"","col_2":"Expanded uncertainty"},"row_2":{"col_1":"1 MΩ to 100 MΩ","col_2":"6 to 16"},"row_3":{"col_1":"100 MΩ to 1000 MΩ","col_2":"16 to 90"}}
Resistance bridge
Voltage : 100 V to 1000 V
In oil, temperature 15 °C to 30 °C
Approved on 06 August 2013
Institute service identifier : BEV/11
CMC ID :
EURAMET-EM-AT-00000DT5-1
Mass ,
Mass
:
1 mg to 100 mg
Mass standard
Absolute expanded uncertainty
:
0.5 µg to 0.7 µg
Comparison in air
Temperature : 18 °C to 23 °C
Relative humidity : 40 % to 60 %
Uncertainty scales with measurand level.The volume of the mass standards is known.
Approved on 31 January 2018
CMC ID :
EURAMET-M-AT-00000FHT-1
Pressure ,
Absolute pressure
:
5000 Pa to 1.20E5 Pa
Digital piston manometer
Absolute expanded uncertainty
0.5 + 4E-05p p pressure in Pa
The uncertainty is expressed in Pa
Gas medium
Uncertainty values range from 0.7 Pa to 5.3 Pa
Approved on 21 October 2001
CMC ID :
EURAMET-M-AT-00000FI5-1
Pressure ,
Gauge pressure
:
3500 Pa to 1.70E5 Pa
Pressure balance
Absolute expanded uncertainty
0.5 + 3E-05p p pressure in Pa
The uncertainty is expressed in Pa
Gas medium
Uncertainty values range from 0.6 Pa to 6 Pa
Approved on 21 October 2001
CMC ID :
EURAMET-M-AT-00000FI6-1
Fluid flow ,
Thermal energy (as a function of liquid flowrate and temperature difference)
:
20 W to 4.00E7 W
Any type of heat meter
Relative expanded uncertainty
:
1 %
Pulsed, electrical, digital and optical output, various methods
Liquid : water
Temperature : 3 °C to 130 °C
Pipe size : DN 10 to DN 150
Approved on 16 November 2012
Institute service identifier : BEV/AT12
CMC ID :
EURAMET-M-AT-00000FIM-1
Viscosity ,
Kinematic viscosity
:
3 mm2/s2 to 5 mm2/s2
Newtonian liquids
Relative expanded uncertainty
:
0.5 %
Capillary viscometer
Temperature : 20°C
The uncertainty of the viscosity of water (ISO/TR 3666 (1998), 0.17%) is not taken into account
Approved on 21 October 2001
CMC ID :
EURAMET-M-AT-00000FIB-1
Force ,
Force: compression, tension
:
40 kN to 1000 kN
Force measuring device
Relative expanded uncertainty
:
5.0E-2 %
Hydraulic amplification
Approved on 21 October 2001
CMC ID :
EURAMET-M-AT-00000FJ4-1
Force ,
Force: compression, tension
:
0.5 MN to 5 MN
Force measuring device
Relative expanded uncertainty
:
5.0E-2 %
Hydraulic amplification
Approved on 21 October 2001
CMC ID :
EURAMET-M-AT-00000FJ5-1
Pressure ,
Gauge pressure
:
4.00E7 Pa to 4.00E8 Pa
Pressure balance
Absolute expanded uncertainty
8E-05p + 2.5E-13p2 p pressure in Pa
The uncertainty is expressed in Pa
Oil medium
Uncertainty values range from 3.6E+03 Pa to 7.2E+04 Pa
Approved on 21 October 2001
CMC ID :
EURAMET-M-AT-00000FIA-1
Viscosity ,
Kinematic viscosity
:
1.00E-3 mm2/s2 to 0.05 mm2/s2
Newtonian liquids
Relative expanded uncertainty
:
0.4 %
Capillary viscometer
Temperature : 20°C
The uncertainty of the viscosity of water (ISO/TR 3666 (1998), 0.17%) is not taken into account
Approved on 21 October 2001
CMC ID :
EURAMET-M-AT-00000FJ9-1
