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
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
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
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
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
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
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 : 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 disseminating ITS-90 and PLTS 2000 , Temperature : 1084.62 °C
Noble-metal thermocouple (type S or R)
Absolute expanded uncertainty : 0.4 °C
Fixed point calibration
Furnace
Approved on 03 November 2009
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
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
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
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
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

Select Metrology Area

General physics
Acoustics, Ultrasound, Vibration

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

Electricity and Magnetism

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

Length

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

Mass and related quantities

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

Chemistry and Biology
Chemistry and Biology

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

Ionizing radiation
Ionizing Radiation

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