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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)
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)
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 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 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
Items for defining ITS-90 , Temperature : 660.323 °C
Aluminium cell
Absolute expanded uncertainty : 1.0E-2 °C
Direct comparison
Temperature-controlled furnace : 659 °C
Approved on 18 May 2004
Items for defining ITS-90 , Temperature : 29.7646 °C
Gallium cell
Absolute expanded uncertainty : 1.0E-3 °C
Direct comparison
Temperature-controlled bath : 29.7 °C
Approved on 18 May 2004
Items for defining ITS-90 , Temperature : 231.928 °C
Tin cell
Absolute expanded uncertainty : 9.0E-4 °C
Direct comparison
Temperature-controlled furnace : 231 °C
Approved on 18 May 2004
Items for defining ITS-90 , Temperature : -189.3442 °C
Long-stem SPRT
Absolute expanded uncertainty : 2.0E-3 °C
Fixed point
Standard: Argon cell Cryostat
Approved on 18 May 2004
Mass , Mass : 50 kg to 2000 kg
Mass standard
Absolute expanded uncertainty : 1.0E2 mg to 3.0E3 mg
Comparison in air
Uncertainty scales with measurand level
Approved on 11 June 2017
Torque , Torque : 4 N m to 20 N m
Torque measuring device
Relative expanded uncertainty : 8.0E-4
Mode : clockwise, anticlockwise
Approved on 11 October 2005
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
Impedance (up to the MHz range) , Inductance: self inductance, intermediate values : 0.1 mH to 100 mH
Fixed inductor
Relative expanded uncertainty : 2.0E1 µH/H to 1.0E2 µH/H
{"row_1":{"col_1":"","col_2":"Method of measurement","col_3":"Reference standard used in calibration","col_4":"Frequency","col_5":"Relative expanded uncertainty"},"row_2":{"col_1":"100 mH","col_2":"Series resonance","col_3":"Capacitance standard","col_4":"1 kHz, 1.592 kHz","col_5":"20"},"row_3":{"col_1":"10 mH to 100 mH","col_2":"2 DVM","col_3":"Resistance standard","col_4":"50 Hz to 1000 Hz","col_5":"50"},"row_4":{"col_1":"100 µH to 10 mH","col_2":"2 DVM","col_3":"Resistance standard","col_4":"50 Hz to 2000 Hz","col_5":"20"}}
The expanded uncertainty given in this table are expressed in µH/H
2 DVM, series resonance
Frequency : 50 Hz to 2000 Hz, 1592 Hz
Approved on 11 May 2017
Institute service identifier : MIKES/93n
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 AC voltage: peak values : 0 % to 10 %
linearity of peak voltage responding measuring system, AC voltmeter, AC voltaqe source
Relative expanded uncertainty : 0.1 %
Linearity extension according to IEC 60060-2
Voltage range : 100 kV to 1000 kV
Frequency : 46 Hz to 60 Hz
Approved on 11 May 2017
Institute service identifier : MIKES/HV16a
DC current (up to 100 A) , DC current sources: intermediate values : 1.00E-4 A to 20 A
Multifunction calibrator
Relative expanded uncertainty : 5 µA/A to 2.0E1 µA/A
{"row_1":{"col_1":"","col_2":"Relative expanded uncertainty","col_3":"Method of measurement"},"row_2":{"col_1":"0.1 mA to 100 mA","col_2":"5","col_3":"Voltage across resistance standard"},"row_3":{"col_1":"0.1 A to 2 A","col_2":"5 to 10","col_3":"Voltage across resistance standard"},"row_4":{"col_1":"2 A to 20 A","col_2":"10 to 20","col_3":"Voltage across resistance standard"},"row_5":{"col_1":"0.1 mA to 1 A","col_2":"10","col_3":"Comparison with digital multimeter"}}
The expanded uncertainty given in this table are expressed in µA/A
Voltage across resistance standard, comparison with digital multimeter
Approved on 06 August 2013
Institute service identifier : MIKES/68n
AC current , AC current up to 100 A: sources : 0.025 A to 10 A
Multifunction calibrator, AC current source
Relative expanded uncertainty : 2.5E1 µA/A
Direct comparison
Frequency : 45 Hz to 65 Hz
Approved on 06 August 2013
Institute service identifier : MIKES/179a

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Acoustics, Ultrasound, Vibration

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

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

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

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

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Chemistry and Biology

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

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Ionizing Radiation

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