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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)
New Zealand, MSL (Measurement Standards Laboratory)
Spectral properties of materials , Transmittance, diffuse, spectral, T : 0.1 to 1
Spectrally-neutral material
Relative expanded uncertainty
0.05T
Spectrophotometer, integrating sphere
Wavelength range : 300 nm to 400 nm
Bandwidth : 1 nm to 3 nm
Specific measurement conditions : 0/d
Other types of material can also be calibrated
Approved on 20 October 2005
Institute service identifier : MSLT.O.020
Properties of detectors , Responsivity, spectral power
Broadband detector
Relative expanded uncertainty : 8.0E-2 %
Monochromator and reference detectors
Wavelength range : 680 nm to 800 nm
Bandwidth : 1 nm to 5 nm
Power level : 0.1 µW to 10 µW
Approved on 20 October 2005
Institute service identifier : MSLT.O.040 or MSLT.O.009
Items for defining ITS-90 , Temperature : 29.7646 °C
Gallium melting point cell
Absolute expanded uncertainty : 0.13 mK
Comparison with reference cell(s)
Temperature controlled furnaceModified on 09 February 2015
Approved on 24 June 2004
Institute service identifier : MSL/T3
Items for defining ITS-90 , Temperature : 419.527 °C
Zinc freezing point cell
Absolute expanded uncertainty : 1.9 mK
Comparison with reference cell(s)
Temperature controlled furnaceModified on 09 February 2015
Approved on 24 June 2004
Institute service identifier : MSL/T6
Items for defining ITS-90 , Temperature : 231.928 °C
Tin freezing point cell
Absolute expanded uncertainty : 0.82 mK
Comparison with reference cell(s)
Temperature controlled furnaceModified on 09 February 2015
Approved on 24 June 2004
Institute service identifier : MSL/T5
Items for defining ITS-90 , Temperature : -38.8344 °C
SPRT
Absolute expanded uncertainty : 0.4 mK
Mercury triple point cell
Fixed point cellModified on 09 February 2015
Approved on 24 June 2004
Institute service identifier : MSL/T7
AC power , AC power and energy: three phase, reactive power : 0 var to 7.20E4 var
Power meter, energy meter, power converter, wattmeter, VAR meters, three phase source
Relative expanded uncertainty
40 + 90QF

values range from 40 µvar/VA to 130 µvar/VA

The uncertainty is expressed in µvar (VA)-1

Power bridge
Reactive power factor, QF : 1 to 0, inductive or capacitive
Voltage : 60 V to 240 V
Current : 0.01 A to 100 A
Frequency : 45 Hz to 75 Hz
Voltage and current ranges are per phase
Approved on 10 November 2014
Institute service identifier : 61b
High voltage and current , AC high voltage transformer: phase displacement : -0.2 rad to 0.2 rad
Voltage transformer bridge
Absolute expanded uncertainty : 5.0E-7 rad to 9.0E-5 rad
{"row_1":{"col_1":"","col_2":"Expanded uncertainty Ratio","col_3":"Expanded uncertainty Phase/rad"},"row_2":{"col_1":"± (0 to 0.002)","col_2":"5E-07 to 1.0E-06","col_3":"5E-07 to 1.0E-06"},"row_3":{"col_1":"± (0.002 to 0.02)","col_2":"2E-06 to 8E-06","col_3":"5E-06 to 9E-06"},"row_4":{"col_1":"± (0.02 to 0.2)","col_2":"2E-05 to 8E-05","col_3":"5E-05 to 9E-05"}}
Inject known error voltage
Frequency : 45 Hz to 65 Hz
Voltage : 5 V to 300 V
Approved on 31 October 2016
Institute service identifier : 78
Impedance (up to the MHz range) , Capacitance for dielectric capacitors : 0 µF to 100 µF
Fixed capacitor, switched capacitor, capacitance box: capacitance C
Absolute expanded uncertainty
0.2/f + 22C

f in Hz, C in µF

The uncertainty is expressed in pF

Universal impedance bridge
Frequency f : 40 Hz to 2 kHz
Expanded uncertainty values range from 0.0001 pF to 2200 pF
Approved on 22 November 2006
Institute service identifier : 39
DC voltage (up to 1100 V) , DC voltage meters: intermediate values : 12 V to 1100 V
DC voltmeter, multimeter, multifunction transfer standard
Relative expanded uncertainty : 0.5 µV/V
Comparison with reference standard
Ambient temperature : 15 °C to 30 °C
Approved on 22 November 2006
Institute service identifier : 4
AC current , AC current up to 100 A: meters : 0.2 A to 100 A
AC ammeter, multimeter, multifunction transfer standard
Relative expanded uncertainty : 2.5E1 µA/A
Calibrated shunts, current transformers, and ac voltmeters
Frequency : 47 Hz to 75 Hz
Approved on 22 November 2006
Institute service identifier : 59a
AC current , AC current up to 100 A: sources : 0.01 A to 100 A
Multifunction calibrator, transconductance amplifier
Relative expanded uncertainty : 2.5E1 µA/A
Calibrated shunts, current transformers, and ac voltmeters
Frequency : 47 Hz to 75 Hz
Approved on 22 November 2006
Institute service identifier : 58a
DC resistance , DC resistance standards and sources: high values : 1.00E-3 GΩ to 1 GΩ
Fixed resistor, three terminal resistor, resistance box: resistance R
Relative expanded uncertainty
0.7 + 27R - 20R 3

R in GΩ

The uncertainty is expressed in µΩ/Ω

Dual voltage source
Applied voltages : 5 V to 100 V
Temperature : 15 °C to 25 °C
Approved on 31 October 2016
Institute service identifier : 14
High voltage and current , High DC voltage: ratios : 2.00E-5 to 1
High voltage resistive divider, DC high voltage probe
Relative expanded uncertainty : 3 mV/V
Reference divider
Input voltage : 1 kV to 50 kV
Approved on 10 November 2014
Institute service identifier : 11
Radio frequency measurements , RF voltage: meters : 1 V to 3 V
RF voltmeter
Relative expanded uncertainty : 0.3 mV/V to 8 mV/V
Comparison with calibrated source or meter
Frequency : 1 MHz to 100 MHz
Approved on 10 November 2014
Institute service identifier : 66
Density , Density of solid : 1400 kg/m3 to 2500 kg/m3
Solid density artifact
Relative expanded uncertainty : 1.0E-5
Comparison in liquid
Mass : 400 g to 200 g
Temperature : 17 °C to 23 °C
Approved on 14 April 2005
Institute service identifier : MSL/10
Pressure , Gauge pressure: gas medium : 350 kPa to 1.10E4 kPa
Pressure measuring device, standard pressure generator
Relative expanded uncertainty : 6.0E-5
Direct comparison with standard, crossfloat
Approved on 14 April 2005
Institute service identifier : MSL/17
Pressure , Gauge pressure: gas medium : 2 kPa to 350 kPa
Pressure measuring device, standard pressure generator
Relative expanded uncertainty : 2.0E-5
Direct comparison with standard, crossfloat
Approved on 14 April 2005
Institute service identifier : MSL/16
Mass , Mass : 10 g to 100 g
Mass standard
Absolute expanded uncertainty : 4 µg to 8 µg
Comparison in air
Approved on 14 April 2005
Institute service identifier : MSL/4
Spectral properties of materials , Transmittance, diffuse, spectral : 1.00E-4 to 4.00E-3
Spectrally-neutral material
Absolute expanded uncertainty : 2.0E-4
Spectrophotometer, integrating sphere
Wavelength range : 400 nm to 1000 nm
Bandwidth : 1 nm to 3 nm
Specific measurement conditions : 0/d
Other types of material can also be calibrated
Approved on 20 October 2005
Institute service identifier : MSLT.O.020

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