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The KCDB - the BIPM key comparison database – supports the CIPM MRA. The KCDB contains information on the internationally recognized Calibration and Measurement Capabilities (CMCs) for services available from the participating institutes, and the key and supplementary comparisons supporting these CMCs.
All data listed in the KCDB have been reviewed and approved within the CIPM Mutual Recognition Arrangement
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CIPM MRA PARTICIPANTS
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AC voltage, current, and power
DC voltage, current, and resistance
Electric and magnetic fields
High voltage and current
Impedance up to the MHz range
Materials
Other DC and low frequency measurements
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AC current
AC power
AC voltage (up to the MHz range)
DC current (up to 100 A)
DC resistance
DC voltage (up to 1100 V)
Electric and magnetic fields
High voltage and current
Impedance (up to the MHz range)
Measurements on materials
Other DC and low frequency measurements
Radio frequency measurements
All sub services
AC current ratio up to 100 A
AC current up to 100 A
AC high voltage and voltage transformers
AC power and energy
AC resistance
AC voltage ratio up to 1100 V, atten & gain
AC voltage up to 1100 V
AC-DC current transfer
AC-DC voltage transfer
Antenna properties
Capacitance
Current and voltage waveform
DC current meters
DC current ratios
DC current sources
DC resistance meters
DC resistance ratios
DC resistance standards and sources
DC voltage meters
DC voltage ratios
DC voltage sources
Dielectric properties
Electric charge
Electric discharge
Electric fields at freq. below 50 kHz
Electrical conductivity
Electromagnetic fields at freq. above 50 kHz
Feebly magnetic, paramagnetic and diamagnetic material
Hard magnetic material
High AC current and current transformers
High DC current
High DC voltage
High voltage impedance
Inductance
Lumped impedance - admittance
Magnetic data storage media
Magnetic fields at freq. below 50 kHz
Noise
Phase angle
Pulsed high voltage and current
RF characteristic impedance
RF power
RF voltage and current
Scalar RF reflection coef. and attenuation
Scattering parameters (vectors)
Signal and pulse characteristics
Soft magnetic bulk material
Soft magnetic sheet and powder materials
Individual service
Absolute power in coaxial line
Absolute power in waveguide
AC magnetic flux density and applied magnetic field strength
AC resistance ratios
AC shielding factor (ratio of AC magnetic flux density)
AC-DC difference
AC-DC transfer difference
AC-DC transfer difference at higher voltages (> 5 V)
AC-DC transfer difference at low voltages (<= 0.5 V)
AC-DC transfer difference at medium voltages (0.5 V to 5 V)
Amplifier noise parameters
Antenna factor
Antenna gain
Apparent charge
Attenuation
Attenuation and gain
Attenuation in coaxial line (values in dB)
Attenuation in waveguide (values in dB)
Average value of DC voltage
Burden: real and imaginary component (real component/imaginary component/modulus/argument)
Calibration factor and effective efficiency in coaxial line
Calibration factor and effective efficiency in waveguide
Capacitance
Capacitance and dissipation factor
Capacitance and dissipation factor for dielectric capacitors
Capacitance and dissipation factor for low loss capacitors
Capacitance and dissipation factor for transformed capacitors
Coercive field strength
Coercive magnetic field strength
Complex relative permeability
Current transformers: ratio error and phase displacement
DC magnetic flux density and applied magnetic field strength
DC magnetic susceptibility or relative magnetic permeability
DC resistance ratios
DC shielding factor (ratio of DC magnetic flux density)
Density
Dielectric loss tangent
Directivity, effective source match
Directivity, effective source match
Distorsion and harmonic content
Electric field strength
Electric field strength
Electrical parameters
Electrostatic field strength
Flatness of RF voltage meters
Flatness of RF voltage sources
High AC current RMS value
High DC current average value
High DC current ratio
High values (above 1 gigaohm)
High values (above 1 megaohm)
High values (from above 20 A up to 100 A)
High values (from above 20 A up to 100 A)
High voltage meters
High voltage sources
Inductance
Inductance and loss angle
Intermediate values (from above 0.1 mA to 20 A)
Intermediate values (from above 0.1 mA to 20 A)
Intermediate values (from above 1 mV up to 1100 V)
Intermediate values (from above 1 ohm up to 1 gigaohm)
Intermediate values (from above 1 ohm up to 1 megaohm)
Intermediate values (from above 10 V up to 1100 V)
Liquids
Low values (<= 1 ohm)
Low values (below 0.1 mA)
Low values (below or equal to 0.1 mA)
Low values (below or equal to 1 ohm)
Low values (below or equal to 10 V)
Magnetic field gradient
Magnetic field strength
Magnetic field strength
Magnetic field strength per unit current
Magnetic flux
Magnetic flux density
Magnetic flux density
Magnetic flux density or magnetic field strength per unit current
Magnetic moment
Magnetic polarisation
Magnetic polarisation
Magnetic saturation polarisation
Main frequency harmonics
Mains frequency fluctuating harmonics (see list in the bottom of KCDB home page)
Mains frequency harmonic distorsion
Mains frequency interharmonics
Mains frequency voltage fluctuations (see list in the bottom of KCDB home page)
Maximum energy product
Mechanical dimensions
Metallic materials
Meters
Meters
Meters
Meters
Meters
Meters
Meters
Meters
Modulation, AM and FM
Multiple ranges
Mutual inductance
Noise currents
Noise temperature or excess noise ratio in coaxial line
Noise temperature or excess noise ratio in waveguide
Noise voltages
Non-CW power (absolute or relative)
Other AC current parameters
Other properties (pattern, beam width, …)
Overwrite of diskettes
Parameters for impulse current
Parameters for lightning impulse voltage
Parameters for other impulse voltage types
Parameters for switching impulse voltage
Peak shift of diskettes
Peak value of AC magnetic polarisation
Peak value of DC magnetic polarisation
Peak value of magnetic field strength
Peak values of high AC voltage
Phase noise
Phase shift
Power flux density
Power measurements in balanced lines
Pulse amplitude
Pulse time parameters
Quality factor
Quality factor
Radio brightness temperature, spectral radiance in free space
Ratios
Ratios up to 100 A
Real component and imaginary component
Real component and imaginary component
Real component and imaginary component
Rectified average value of high AC voltage
Reference field of diskettes
Reflection and attenuation measurements in balanced lines
Reflection coefficient (Sii) in planar line systems
Reflection coefficient for common mode systems
Reflection coefficient in coaxial line (real and imaginary)
Reflection coefficient in coaxial line (values in linear terms)
Reflection coefficient in waveguide (real and imaginary)
Reflection coefficient in waveguide (values in linear terms)
Relative peak permeability
Relative permeability
Relative permittivity: real and - or imaginary part
Relative recoil permeability
Remanent magnetic flux density
Remanent magnetic flux density
Resistance
Resistance or conductance
Resistivity
Resistors for high current
Resolution of diskettes
Response
RF coupling factor
RF current
RF transfer impedance
RF voltage division factor
RF voltage meters
RF voltage sources
RF-DC difference
Rise time of partial discharge pulse
RMS value for high AC voltage
RMS value of DC voltage ripple
RMS value of magnetic field strength
Self inductance, high values (above 1 H)
Self inductance, intermediate values (from 1 mH up to 1 H)
Self inductance, low values (below 1 mH)
Semiconducting and similar materials
Signal amplitude of diskettes
Signal amplitude of magnetic stripes
Single phase power at frequencies <= 400 Hz
Single phase power at frequencies > 400 Hz
Single values
Sources
Sources
Sources
Sources
Sources
Specific apparent power
Specific total power loss
Standards for high current
Surface profile of magnetic stripes
Temperature, power and pressure coefficients
Three phase
Transconductance ratio
Transmission coefficient (Sij) in planar line systems
Transmission coefficient for common mode systems
Transmission coefficient in coaxial line (real and imaginary)
Transmission coefficient in waveguide (real and imaginary)
Turn area (ratio of magnetic flux and magnetic flux density)
Turn area (ratio of magnetic flux and magnetic flux density)
Up to 1100 V
Very low values (below or equal to 1 mV)
Video and audio tapes
Voltage transformers: ratio error and phase displacement
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All units
%
%IACS
'
(A/m) (A/m)<sup>-1</sup>
(A/m) A<sup>-1</sup>
(A/m)/(A/m)
(S/m) (S/m)<sup>-1</sup>
(V/m) (V/m)<sup>-1</sup>
(dimensionless)
(Ωcm) (Ωcm)<sup>-1</sup>
A
A m<sup>2</sup>
A m<sup>2</sup>/kg
A/A
A/V
A/m
A<sup>2</sup>s
Am<sup>2</sup>
Am<sup>2</sup>/kg
As
As (As)<sup>-1</sup>
C
C/C
F
F/F
F/F
GJ
GW
GΩ
H
H/H
H/m
Hz
Hz/Hz
Hz/s
J
J/J
J/m<sup>3</sup>
K
K/K
MA/m
MA<sup>2</sup>s
MJ
MS/m
MW
MWs
Mvar
Mvar s
MΩ
Pst
PΩ
S/S
S/m
T
T (Am)<sup>-1</sup>
T/A
T/Am
T/T
T/m
TΩ
V
V/A
V/V
V/kV
V/m
VA
VA/kg
VAh
VAs
Vs
W
W (m<sup>2</sup>sr Hz)<sup>-1</sup>
W/(m<sup>2</sup> sr Hz)
W/W
W/kg
W/m<sup>2</sup>
Wb
Wb/A
Wb/T
Wb/Wb
Wh
Ws
cW/W
cm<sup>2</sup>
cm<sup>2</sup>/m<sup>2</sup>
crad
dB
dB(1/m)
dB(1/m) or dB(S/m)
dB(1/m) or dB(pT/µV)
dB(1/Ωm)
dB(S/m)
dB(pT/µV)
dB(Ω)
dB/(10 dB)
dB/dB
dB/m
dBc
dBc/Hz
dBi
dBm
degree
dimension 1
fC
fF
fs
kA
kA/m
kHz
kJ/m<sup>3</sup>
kV
kV/m
kVA
kVAh
kW
kWh
kWs
kvar
kvar h
kΩ
kΩ/Ω
m
m<sup>2</sup>
m<sup>2</sup>/m<sup>2</sup>
mA
mA/A
mA/m
mAs
mAs (As)<sup>-1</sup>
mC/C
mF
mF/F
mH
mH/H
mHz/Hz
mK/K
mT
mT/A
mT/T
mV
mV/V
mVA (VA)<sup>-1</sup>
mW
mW/(V A)
mW/W
mW/cm<sup>2</sup>
mWb
mWb/Wb
mWh (VAh)<sup>-1</sup>
millidegree
minute
mm
mrad
mrad/rad
ms
ms/s
mΩ
mΩ/Ω
mΩ/Ω of nominal resistance
nA
nC
nF
nH
nT
nV
nV/V
nV/V
ns
nΩ
nΩ/Ω
pA
pC
pF
ps
rad
rad/rad
s
s/s
var
var h
var s
var/var
°
µA
µA/A
µAs (As)<sup>-1</sup>
µC
µC/C
µF
µF/F
µH
µH/H
µJ (VAs)<sup>-1</sup>
µJ/VAs
µS/S
µT
µT/A
µT/T
µV
µV/V
µV/kV
µVA (VA)<sup>-1</sup>
µVA/VA
µVAh (VAh)<sup>-1</sup>
µVAs (VAs)<sup>-1</sup>
µW
µW (VA)<sup>-1</sup>
µW/VA
µW/W
µWh (VAh)<sup>-1</sup>
µWh (Wh)<sup>-1</sup>
µWs (VAs)<sup>-1</sup>
µWs/VAs
µm
µrad
µrad/rad
µs
µvar (VA)<sup>-1</sup>
µvar h (VAh)<sup>-1</sup>
µvar s (VAs)<sup>-1</sup>
µvar s (var s)<sup>-1</sup>
µvar/VA
µΩ
µΩ (Ω hPa)<sup>-1</sup>
µΩ (ΩK)<sup>-1</sup>
µΩ (ΩK<sup>2</sup>)<sup>-1</sup>
µΩ (ΩK<sup>2</sup>)<sup>-1</sup>
µΩ (ΩW)<sup>-1</sup>
µΩ/(Ω K)
µΩ/(ΩK<sup>2</sup>)
µΩ/Ω
Ω
Ω (Ω hPa)<sup>-1</sup>
Ω (ΩK)<sup>-1</sup>
Ω (ΩK<sup>2</sup>)<sup>-1</sup>
Ω (ΩW)<sup>-1</sup>
Ω/Ω
Ωcm
Ωm
Ωm (Ωm)<sup>-1</sup>
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