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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)
Finland, FGI (Finnish Geospatial Research Institute)
Gravity , Gravitational acceleration : 9.75 m/s2 to 9.85 m/s2
On (stable) site
Absolute expanded uncertainty : 8.0E-8 m/s2
Free fall experiment
Ambient temperature : 21 °C ± 8 °C
Approved on 03 January 2007
Finland, MIKES (VTT Technical Research Centre of Finland Ltd, Centre for Metrology/Mittatekniikan keskus)
Frequency , Frequency : 1 MHz
Local frequency standard
Relative expanded uncertainty : 3.0E-12 Hz/Hz
Phase time measurement
Averaging time : 1000 s
Approved on 08 June 2007
Institute service identifier : MIKES/2
Frequency , Frequency : 5 MHz
Local frequency standard
Relative expanded uncertainty : 3.0E-12 Hz/Hz
Phase comparator
Averaging time : 1 s
Approved on 08 June 2007
Institute service identifier : MIKES/3
Frequency , Frequency : 10 Hz to 5.00E9 Hz
General frequency source
Absolute expanded uncertainty
(1E-11)f + 1E-05

f frequency in Hz

The uncertainty is expressed in Hz
Counter
Averaging time : 100 s
Approved on 08 June 2007
Institute service identifier : MIKES/6
Linear vibration , Charge sensitivity (phase shift) : 0 ° to 360 °
Accelerometer
Absolute expanded uncertainty : 1 °
ISO 16063-21 (comparison)
Frequency : 10 Hz to 1 kHz
Approved on 18 June 2014
Institute service identifier : MIKES/V21.3.1.2.A
Sound calibrators , Sound pressure level : 94 dB (reference: 20 µPa) to 114 dB (reference: 20 µPa)
Sound calibrator, multi-frequency
Absolute expanded uncertainty : 0.15 dB
Calibrated measurement microphone
Frequency : 8 kHz to 12.5 kHz
Microphone type : LS2P
Approved on 09 November 2006
Linear vibration , Voltage sensitivity (modulus)
Acceleration measuring chain
Relative expanded uncertainty : 1.5 %
ISO 16063-21 (comparison)
Frequency : 1.25 kHz to 4.5 kHz
Approved on 18 June 2014
Institute service identifier : MIKES/V21.4.1.1.B
Measurement microphones , Pressure sensitivity level
Measurement microphone type LS2
Absolute expanded uncertainty : 5.0E-2 dB
IEC 61094-2:1992
Frequency : 125 Hz to 8 kHz
Approved on 09 November 2006
Measurement microphones , Pressure sensitivity level
Measurement microphone type LS1
Absolute expanded uncertainty : 6.0E-2 dB
IEC 61094-2:1992
Frequency : 31.5 Hz
Approved on 09 November 2006
Measurement microphones , Pressure sensitivity level
Measurement microphone type LS2
Absolute expanded uncertainty : 8.0E-2 dB
IEC 61094-2:1992
Frequency : 31.5 Hz
Approved on 09 November 2006
Measurement microphones , Pressure sensitivity level
Measurement microphone type LS1
Absolute expanded uncertainty : 5.0E-2 dB
IEC 61094-2:1992
Frequency : 4 kHz
Approved on 09 November 2006
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 10 °C to 85 °C
Liquid-in-glass thermometer
Absolute expanded uncertainty : 7.0E-3 °C
Comparison
Bath : graduation 0.01 °C, reading 10 mm to 25 mm above liquid surface
Approved on 03 November 2009
Complex geometry , Screw standards : 3 mm to 150 mm
Thread plug, plain, pitch diameter
Absolute expanded uncertainty : 2 µm
3-wire method, length measuring machine
Approved on 21 October 2001
Institute service identifier : MIKES/43
Radio frequency measurements , Scattering parameters: transmission coefficient (Sij) in coaxials, magnitude : 0 dB to 80 dB
Passive device
Absolute expanded uncertainty : 1.6E-2 dB to 0.18 dB
Uncertainty table
{"row_1":{"col_1":"","col_2":"0.01 GHz","col_3":"0.100 GHz","col_4":"1 GHz","col_5":"6 GHz","col_6":"10.000 GHz","col_7":"14.000 GHz","col_8":"18.000 GHz"},"row_2":{"col_1":"0 dB","col_2":"0.016","col_3":"0.016","col_4":"0.025","col_5":"0.055","col_6":"0.057","col_7":"0.057","col_8":"0.057"},"row_3":{"col_1":"10 dB","col_2":"0.026","col_3":"0.026","col_4":"0.032","col_5":"0.059","col_6":"0.060","col_7":"0.060","col_8":"0.060"},"row_4":{"col_1":"20 dB","col_2":"0.043","col_3":"0.043","col_4":"0.047","col_5":"0.068","col_6":"0.070","col_7":"0.070","col_8":"0.070"},"row_5":{"col_1":"30 dB","col_2":"0.062","col_3":"0.062","col_4":"0.065","col_5":"0.082","col_6":"0.083","col_7":"0.083","col_8":"0.083"},"row_6":{"col_1":"40 dB","col_2":"0.082","col_3":"0.082","col_4":"0.084","col_5":"0.097","col_6":"0.099","col_7":"0.099","col_8":"0.099"},"row_7":{"col_1":"50 dB","col_2":"0.101","col_3":"0.101","col_4":"0.103","col_5":"0.114","col_6":"0.121","col_7":"0.121","col_8":"0.121"},"row_8":{"col_1":"60 dB","col_2":"0.121","col_3":"0.121","col_4":"0.123","col_5":"0.132","col_6":"0.181","col_7":"0.181","col_8":"0.181"},"row_9":{"col_1":"70 dB","col_2":"0.141","col_3":"0.141","col_4":"0.143","col_5":"0.151","col_6":"-","col_7":"-","col_8":"-"},"row_10":{"col_1":"80 dB","col_2":"0.165","col_3":"0.165","col_4":"0.166","col_5":"0.173","col_6":"-","col_7":"-","col_8":"-"}}
The expanded uncertainty given in this table are expressed in dB
Vector network analyser
Frequency : 10 MHz to 18 GHz
Connector : Type N
S11 and S22 : < 0.2
At 10 MHz, S11 and S22 < 0.1
Approved on 06 August 2013
Institute service identifier : MIKES/204
AC power , AC power and energy: three phase, active energy : 0 kWh to 0.35 kWh
Active energy meter
Relative expanded uncertainty : 1.2E2 µWh (VAh)-1
Comparison with standard
Voltage : 50 V to 350 V
Current : 0.005 A to 12 A
Power factor : 1 to 0, inductive or capacitive
Frequency : 45 Hz to 65 Hz
Measurement time : 1 s to 100 s
Voltage and current ranges are per phase
Approved on 06 August 2013
Institute service identifier : MIKES/189c
AC power , AC power and energy: three phase, reactive power : 0 kvar to 12.6 kvar
Power meter
Relative expanded uncertainty : 2.5E2 µvar (VA)-1
Comparison with standard
Voltage : 50 V to 350 V
Current : 0.005 A to 12 A
Power factor : 1 to 0, inductive or capacitive
Frequency : 45 Hz to 65 Hz
Voltage and current ranges are per phase
Approved on 06 August 2013
Institute service identifier : MIKES/190b
High voltage and current , High voltage impedance: capacitance dissipation factor : 0 to 1.00E-3
Compressed gas capacitor, capacitor for high voltage
Absolute expanded uncertainty : 2.0E-5
Current comparator bridge or sampling of current and voltage
Capacitance : 10 µF to 100 µF
Frequency : 45 Hz to 60 Hz
Current : > 30 µA
Approved on 07 February 2019
Institute service identifier : MIKES/HV46
High voltage and current , High AC voltage: voltage transformer phase displacement : 0 mrad to 2 mrad
Voltage transformer, voltage divider
Absolute expanded uncertainty : 2.0E-2 mrad
Current comparator bridge
Frequency : 45 Hz to 60 Hz
Input voltage : 1 kV to 200 kV
Output voltage : 20 V to 1000 V
Approved on 11 May 2017
Institute service identifier : MIKES/HV18
High voltage and current , High voltage impedance: loss angle for inductance : 0 mrad to 350 mrad
High voltage reactor
Absolute expanded uncertainty : 0.2 mrad
Simultaneous sampling of current and voltage
Frequency : 45 Hz to 60 Hz
Current : 50 mA to 300 A
Voltage : 10 mV to 1000 V
Approved on 07 February 2019
Institute service identifier : MIKES/HV13
Items for defining ITS-90 , Temperature : 419.527 °C
Long-stem SPRT
Absolute expanded uncertainty : 2.0E-3 °C
Fixed point
Temperature-controlled furnace : 419 °C
Standard: Zinc cell
Approved on 18 May 2004

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.