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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
CMC ID :
EURAMET-M-FI-000009FE-1
Finland, MIKES (VTT Technical Research Centre of Finland Ltd, Centre for Metrology/Mittatekniikan keskus)
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
CMC ID :
EURAMET-AUV-FI-000006HG-1
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
CMC ID :
EURAMET-T-FI-0000096V-1
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
CMC ID :
EURAMET-T-FI-0000096K-1
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
-80 °C to 10 °C
Industrial Platinum Resistance Thermometer
Absolute expanded uncertainty
:
7.0E-3 °C
Comparison
Bath
Approved on 03 November 2009
CMC ID :
EURAMET-T-FI-0000096O-1
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
CMC ID :
EURAMET-T-FI-0000096I-1
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
CMC ID :
EURAMET-L-FI-00000ALM-1
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
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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
CMC ID :
EURAMET-EM-FI-00000E6G-1
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
CMC ID :
EURAMET-EM-FI-00000E6J-1
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
CMC ID :
EURAMET-EM-FI-00000E6L-1
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
CMC ID :
EURAMET-TF-FI-000005BC-1
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
CMC ID :
EURAMET-TF-FI-000005BD-1
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
CMC ID :
EURAMET-TF-FI-000005B6-1
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
CMC ID :
EURAMET-AUV-FI-000006HX-1
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
CMC ID :
EURAMET-AUV-FI-000006HW-1
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
CMC ID :
EURAMET-AUV-FI-000006I7-1
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
CMC ID :
EURAMET-AUV-FI-000006HO-1
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
CMC ID :
EURAMET-AUV-FI-000006HM-1
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
CMC ID :
EURAMET-AUV-FI-000006HI-1
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
CMC ID :
EURAMET-T-FI-0000096G-1
