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Geographical location
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)
Greece, EIM (Hellenic Institute of Metrology)
Mass , Mass : 1 mg to 100 mg
Mass standard
Absolute expanded uncertainty : 0.6 µg to 1.5 µg
Comparison in air
Uncertainty scales with measurand level The volume of the mass standards is known
Approved on 18 November 2010
Mass , Mass : 0.1 g to 1 g
Mass standard
Absolute expanded uncertainty : 1.5 µg to 3 µg
Comparison in air
Uncertainty scales with measurand level The volume of the mass standards is known
Approved on 18 November 2010
Hygrometers , Humidity : -20 °C to 40 °C
Dew-point hygrometer
Absolute expanded uncertainty : 5.0E-2 °C
Measurement against humidity generator
Continuous gas flow : 1 atm
Approved on 03 November 2009
Institute service identifier : EIM_TEM_52
Hygrometers , Humidity : -30 °C to -20 °C
Dew-point hygrometer
Absolute expanded uncertainty : 0.1 °C
Measurement against humidity generator
Continuous gas flow : 1 atm
Approved on 03 November 2009
Institute service identifier : EIM_TEM_51
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 160 °C to 250 °C
PRT
Absolute expanded uncertainty : 2.0E-2 °C
Comparison
Stirred liquid bath : oil
Approved on 03 November 2009
Institute service identifier : EIM_TEM_22
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 660.323 °C
Noble-metal alloys thermocouple (type S, R)
Absolute expanded uncertainty : 0.3 °C
Fixed points
Heat pipe furnace
Approved on 03 November 2009
Institute service identifier : EIM_TEM_25
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 231.928 °C
Noble-metal alloys thermocouple (type S, R)
Absolute expanded uncertainty : 0.3 °C
Fixed points
Furnace
Approved on 03 November 2009
Institute service identifier : EIM_TEM_23
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 1084.62 °C
Pure-metal thermocouple (type Pt/Pd)
Absolute expanded uncertainty : 0.2 °C
Fixed points
Heat pipe furnace
Approved on 03 November 2009
Institute service identifier : EIM_TEM_40
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 231.928 °C
Pure-metal thermocouple (type Pt/Pd)
Absolute expanded uncertainty : 0.25 °C
Fixed points
Furnace
Approved on 03 November 2009
Institute service identifier : EIM_TEM_36
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 1084.62 °C to 1200 °C
Temperature sensor with display unit
Absolute expanded uncertainty : 1.5 °C
Comparison
Furnace : ceramic block
Approved on 03 November 2009
Institute service identifier : EIM_TEM_50
Hygrometers , Humidity : 10 %rh to 95 %rh
Relative humidity sensors
Absolute expanded uncertainty
0.017h + 0.4

h humidity in %rh

The uncertainty is expressed in %rh

Comparison
Air temperature : 10 °C to 20 °C
Pressure : 1 atm
Approved on 05 May 2014
Institute service identifier : EIM_TEM_54
Hygrometers , Humidity : 10 %rh to 95 %rh
Relative humidity sensors
Absolute expanded uncertainty
0.009h + 0.2

h humidity in %rh

The uncertainty is expressed in %rh

Comparison
Air temperature : 20 °C to 45 °C
Pressure : 1 atm
Approved on 05 May 2014
Institute service identifier : EIM_TEM_55
Items for defining ITS-90 , Temperature : 0.01 °C
Long-stem SPRT
Absolute expanded uncertainty : 0.3 mK
Calibration at water triple point
Temperature controlled bath
Approved on 20 January 2010
Institute service identifier : EIM_TEM_4
Items for defining ITS-90 , Temperature : 419.527 °C
Long-stem SPRT
Absolute expanded uncertainty : 1.9E-3 °C
Zn freezing point
3-zone furnace
Approved on 20 May 2010
Institute service identifier : EIM_TEM_8
Items for defining ITS-90 , Temperature : 660.323 °C to 961.78 °C
Long-stem HTSPRT
Absolute expanded uncertainty : 2.0E-2 °C
Fixed points: Al to Ag
Approved on 17 January 2013
Institute service identifier : EIM_TEM_18
Radio frequency measurements , RF power: effective efficiency in coaxials : 0.9 to 1
Barretter and modified power sensor
Absolute expanded uncertainty : 1.2E-2 to 2.0E-2
Substitution in microcalorimeter
Frequency : 50 MHz to 1GHz
Connector type : 3.5 mm
Impedance : 50 Ω
Power : 1 mW to 10 mW
Approved on 06 August 2013
Institute service identifier : 3.1
Radio frequency measurements , RF power: effective efficiency in coaxials : 0.9 to 1
Thermistor mount
Absolute expanded uncertainty : 4.0E-3 to 5.0E-3
Substitution in microcalorimeter
Frequency range : 1 GHz to 18 GHz
Connector type : N type
Impedance : 50 Ω
Power : 1 mW to 10 mW
Approved on 06 August 2013
Institute service identifier : 3.4
Impedance (up to the MHz range) , Capacitance: meters : 1 pF to 1.00E5 pF
LCR meter
Relative expanded uncertainty : 3.0E2 µF/F to 3.5E2 µF/F
{"row_1":{"col_1":"","col_2":"LCR meter"},"row_2":{"col_1":"1 pF","col_2":"350"},"row_3":{"col_1":"10 pF","col_2":"300"},"row_4":{"col_1":"100 pF to 1000 pF","col_2":"300"},"row_5":{"col_1":"10 nF to 100 nF","col_2":"300"}}
The expanded uncertainty given in this table are expressed in µF/F
Direct comparison
Frequency : 1 kHz
Approved on 06 August 2013
Institute service identifier : 4.3
DC current (up to 100 A) , DC current meters: low values : 1 µA to 100 µA
DC current meter, multimeter, multifunction transfer standard
Relative expanded uncertainty : 2.3E1 µA/A to 2.6E1 µA/A
{"row_1":{"col_1":"","col_2":"DC current sources","col_3":"DC current meters"},"row_2":{"col_1":"1 µA to 10 µA","col_2":"14","col_3":"23"},"row_3":{"col_1":"10 µA to 100 µA","col_2":"9","col_3":"26"},"row_4":{"col_1":"0.1 mA to 1 mA","col_2":"14","col_3":"38"},"row_5":{"col_1":"1 mA to 10 mA","col_2":"7","col_3":"38"},"row_6":{"col_1":"0.01 A to 0.1 A","col_2":"14","col_3":"50"},"row_7":{"col_1":"0.1 A to 1 A","col_2":"14","col_3":"55"},"row_8":{"col_1":"1 A to 10 A","col_2":"320","col_3":"500"},"row_9":{"col_1":"10 A to 100 A","col_2":"6000","col_3":"-"}}
The expanded uncertainties given in this table are expressed in µA/A
Direct comparison
Approved on 06 August 2013
Institute service identifier : 5.4
DC voltage (up to 1100 V) , DC voltage meters: intermediate values : 200 V to 1000 V
Digital multimeter
Relative expanded uncertainty : 6 µV/V
Direct with calibrator
Approved on 07 February 2019
Institute service identifier : 5

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