Results for: VTT Technical Research Centre of Finland Ltd, Centre for Metrology / Mittatekniikan keskus
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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, 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
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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
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

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