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CIPM MRA PARTICIPANTS
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CIPM MRA PARTICIPANTS
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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)
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
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":"-"}}
The expanded uncertainties given in this table are expressed in µA/A
Comparison with reference standard
Frequency : 10 Hz to 1 MHz
Approved on 06 January 2015
Institute service identifier : BEV/31
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":"-"}}
The expanded uncertainties given in this table are expressed in µV/V
AC/DC transfer standard
Frequency : 10 Hz to 1 MHz
Approved on 06 August 2013
Institute service identifier : BEV/28
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"}}
The expanded uncertainties given in this table are expressed in microohm/ohm
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
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
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
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
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
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
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
Ionizing radiation
Activity per unit mass , Reference material : 1 Bq/g to 1000 Bq/g
Relative expanded uncertainty 6 %
Gamma ray spectrometer
Mn-54, reference material, mixed gamma ray nuclides, matrix bentonite
Reference standard : Gamma ray spectrometer
Source of traceability : OMH (Bq), BEV (g)
The following radionuclides are present in this reference material: Mn-54, Co-57, Co-60, Am-241, Cd-109, Ba-133, Cs-134, and Cs-137
Approved on 21 October 2001
Institute service identifier : EUR-RAD-BEV-2068
Ionizing radiation
Personal dose equivalent/rate, superficial , Dosemeter : 1.00E-6 Sv/h to 50 Sv/h
Relative expanded uncertainty 4 %
Conversion coefficient, irradiation in a calibrated field on ISO water slab phantom or PMMA rod phantom, substitution of the graphite cavity ionisation chamber
Co-60, ISO-4037, 42 TBq (31.12.2008), 50 GBq (31.12.2008), 3 GBq (31.12.2008), 0.4 GBq (31.12.2008), 1 m to 18 m SDD
Reference standard : Graphite cavity ionisation chamber
Source of traceability : BEV
Approved on 24 January 2012
Institute service identifier : EUR-RAD-BEV-1050
Ionizing radiation
Activity per unit mass , Single nuclide solution : 2.00E6 Bq/g to 1.00E10 Bq/g
Relative expanded uncertainty 2.2 %
Well type ionization chamber, balance
Hg-197, no further specifications
Reference standard : Secondary standard ionization chamber
Source of traceability : NPL (Bq), BEV (g)
Approved on 21 October 2001
Institute service identifier : EUR-RAD-BEV-2044
Ionizing radiation
Activity per unit mass , Single nuclide solution : 2.00E6 Bq/g to 1.00E10 Bq/g
Relative expanded uncertainty 1.7 %
Well type ionization chamber, balance
Re-188, no further specifications
Reference standard : Secondary standard ionization chamber
Source of traceability : NPL (Bq), BEV (g)
Approved on 21 October 2001
Institute service identifier : EUR-RAD-BEV-2052
Ionizing radiation
Surface emission rate , Contamination monitors : 150 s-1 to 4000 s-1
Relative expanded uncertainty 4 %
Large area solid source
Sr-90/Y-90, rectangular, planar sources
Reference standard : Large area proportional counter
Source of traceability : OMH, PTB
Approved on 21 October 2001
Institute service identifier : EUR-RAD-BEV-2060
Ionizing radiation
Surface emission rate , Contamination monitors : 1000 s-1 to 2000 s-1
Relative expanded uncertainty 5 %
Large area solid source
Cs-137, rectangular, planar sources
Reference standard : Large area proportional counter
Source of traceability : OMH, PTB
Approved on 21 October 2001
Institute service identifier : EUR-RAD-BEV-2062
Ionizing radiation
Surface emission rate , Contamination monitors : 200 s-1 to 5000 s-1
Relative expanded uncertainty 4 %
Large area solid source
Tl-204, rectangular, planar sources
Reference standard : Large area proportional counter
Source of traceability : OMH, PTB
Approved on 21 October 2001
Institute service identifier : EUR-RAD-BEV-2061
Ionizing radiation
Surface emission rate , Contamination monitors : 150 s-1 to 1500 s-1
Relative expanded uncertainty 4 %
Large area solid source
C-14, rectangular, planar sources
Reference standard : Large area proportional counter
Source of traceability : OMH, PTB
Approved on 21 October 2001
Institute service identifier : EUR-RAD-BEV-2066
Ionizing radiation
Kerma/rate , Dosemeter : 0.05 Gy/h to 5 Gy/h
Relative expanded uncertainty 0.8 %
Calibration against a calibrated monitor chamber free in air
X-ray, 10 kV to 50 kV, ISO-4037 High air-kerma rate Series, 10 kV to 30 kV, max. 60 mA
Reference standard : Free air parallel plate ionisation chamber
Source of traceability : BEV
Approved on 24 January 2012
Institute service identifier : EUR-RAD-BEV-1019
Items for defining ITS-90 , Temperature : -38.8344 °C to 29.7646 °C
Long-stem SPRT
Absolute expanded uncertainty : 1.5 mK
Comparison with fixed points
Ambient temperature : 23 °C
Approved on 17 January 2013
Institute service identifier : BEV/10

Select Metrology Area

General physics
Acoustics, Ultrasound, Vibration

This metrology area covers the fields of acoustics, ultrasound and vibration.

Electricity and Magnetism

This metrology area covers the fields of DC and AC measurements, impedance, electric and magnetic fields, radiofrequencies and measurements on materials.

Length

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

Mass and related quantities

This metrology area covers the fields of mass standards, force, pressure, density, hardness, torque, gravity and viscosity.

Photometry and Radiometry

Thermometry

Time and Frequency

Chemistry and Biology
Chemistry and Biology

This metrology area covers all fields relevant to chemistry and biology.

Ionizing radiation
Ionizing Radiation

This metrology area covers the fields of dosimetry, radioactivity and neutron measurements.