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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)
Sweden, RISE (Research Institutes of Sweden AB)
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in S/m Absolute expanded uncertainty in % Electrolytic conductivity in Absolute expanded uncertainty in
aqueous solution 3.00E-3 to 1.5 2 to 0.4
  • Mechanism for measurement service delivery : Calibration
  • Temperature range: 15 °C to 40 °C
  • Approved on 06 September 2012
  • Institute service identifier : F02
Matrix or material Dissemination range of measurement capability Range of certified values in reference materials
Electrolytic conductivity in µS/m Absolute expanded uncertainty in % Electrolytic conductivity in Absolute expanded uncertainty in
aqueous solution 20 to 3000 3 to 2
  • Mechanism for measurement service delivery : Calibration
  • Temperature range: 15 °C to 40 °C
  • Approved on 19 June 2014
  • Institute service identifier : F01
Fluid flow , Volume flowrate : 1.70E-3 L/s to 1.5 L/s
Flow meter
Relative expanded uncertainty : 0.1 %
Pulse, analog or visual output
Liquid : water
Temperature : 30 °C to 90 °C
Pipe size : DN 25
Approved on 19 December 2012
Institute service identifier : SE29
Fluid flow , Mass flowrate : 0.015 kg/s to 6.5 kg/s
Flow meter
Relative expanded uncertainty : 6.0E-2 %
Pulse, analog or visual output
Liquid : water
Temperature : 10 °C to 90 °C
Pipe size : DN 40
Approved on 19 December 2012
Institute service identifier : SE32
Fluid flow , Volume : 0.1 L to 1 L
Glassware
Relative expanded uncertainty : 3.0E-3 %
Any type of instrument
Temperature : room temperature
Contained / delivered volume
Approved on 19 December 2012
Institute service identifier : SE2
Measurement microphones , Pressure sensitivity level
Measurement microphone type LS2
Absolute expanded uncertainty : 0.1 dB
IEC 61094-2:1992
Frequency : 12.5 kHz
Approved on 21 October 2001
Linear vibration , Voltage sensitivity (magnitude)
Acceleration measuring chain
Relative expanded uncertainty : 0.5 %
ISO 16063-11
Frequency : 630 Hz to 1 kHz
Approved on 21 October 2001
Linear vibration , Charge sensitivity (magnitude)
Accelerometer
Relative expanded uncertainty : 0.5 %
ISO 16063-11
Frequency : 630 Hz to 1 kHz
Approved on 21 October 2001
Force , Force: compression, tension : 1 N to 2000 N
Force measuring device
Relative expanded uncertainty : 1.0E-2 %
Deadweight
Approved on 21 October 2001
Pressure , Absolute pressure : 7.00E5 Pa to 7.40E6 Pa
Pressure balance
Absolute expanded uncertainty
4.6 + 3.0E-05p

p pressure in Pa

The uncertainty is expressed in Pa

Gas
Uncertainty values range from 2.6E+01 Pa to 2.3E+02 Pa
Approved on 02 July 2008
Pressure , Absolute pressure : 5.00E-6 Pa to 5.00E-4 Pa
Vacuum gauge
Absolute expanded uncertainty
12E-02p

p pressure in Pa

The uncertainty is expressed in Pa

Gas
Uncertainty values range from 6E-07 Pa to 6E-05 Pa
Approved on 02 July 2008
Fibre optics , Wavelength : 1310 nm to 1330 nm
Optical spectrum analyser
Absolute expanded uncertainty : 0.2 nm
Fibre optical spectrum analyser, tunable laser, gas cells
Bandwidth : 0.05 nm
Power : > 1 nW
Approved on 21 October 2001
Fibre optics , Wavelength : 1310 nm to 1330 nm
Fibre optical sources
Absolute expanded uncertainty : 0.2 nm
Fibre optical spectrum analyser, tunable laser, gas cells
Bandwidth : < 0.1 nm
Power : > 1 nW
Approved on 21 October 2001
Spectral properties of materials , Transmittance, regular, spectral : 1.00E-4 to 1
Spectrally-neutral material
Relative expanded uncertainty
0.5 - logt

t transmittance

The uncertainty is expressed in %

Spectrophotometer
Wavelength : 400 nm to 775 nm
Bandwidth : 1 nm to 5 nm
Approved on 21 October 2001
Form , Flatness standards : 0 µm to 10 µm
Optical parallel: parallelism
Absolute expanded uncertainty : 0.1 µm
Mechanical comparator
Diameter : up to 50 mm
Approved on 21 October 2001
Institute service identifier : RISE/27
Form , Flatness standards : 0 µm to 2 µm
Optical flat: surface flatness
Absolute expanded uncertainty : 0.1 µm
Michelson interferometer
Diameter : up to 50 mm
Approved on 21 October 2001
Institute service identifier : RISE/26
Items for defining ITS-90 , Temperature : 962 °C to 1600 °C
Radiation thermometer
Absolute expanded uncertainty : 1.5 °C
Calibration against Gold fixed point blackbody
Working wavelength : 651 nm
Approved on 18 May 2004
Institute service identifier : 25
Items for disseminating ITS-90 and PLTS 2000 , Temperature : -196 °C
Platinum resistance thermometers
Absolute expanded uncertainty : 5 mK
Comparison
Ambient temperature : (23 ± 1) °C
Approved on 03 November 2009
Institute service identifier : 27
Items for defining ITS-90 , Temperature : 660.323 °C
Long-stem SPRT and HTSPRT
Absolute expanded uncertainty : 4 mK
Fixed point (aluminium)
Ambient temperature : 23 °C
Approved on 18 May 2004
Institute service identifier : 17
Items for defining ITS-90 , Temperature : 961.78 °C
Long-stem HTSPRT
Absolute expanded uncertainty : 1.0E1 mK
Fixed point (silver)
Ambient temperature : 23 °C
Approved on 18 May 2004
Institute service identifier : 18

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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 dosimetry, radioactivity and neutron measurements.