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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)
Morocco, LPEE-LNM (Laboratoire National de Métrologie du Laboratoire Public d'Essais et d'Études)
Items for disseminating ITS-90 and PLTS 2000 , Temperature : -40 °C to 230 °C
Temperature sensor with display unit
Absolute expanded uncertainty : 3.0E-2 °C
PRT
Calibration by comparison in alcohol, water and oil bath
Approved on 18 October 2021
High voltage and current , High AC voltage: AC high voltage: meters : 1 kV to 20 kV
High AC voltage measuring systems, AC voltage sources, AC voltmeters
Absolute expanded uncertainty : 2.0E-2 kV to 0.4 kV
Comparison to a voltmeter with a resistive divider
Frequency : 50 Hz
new CMCs
Approved on 13 May 2022
DC resistance , DC resistance standards and sources: low values : 1.00E-3 Ω to 1 Ω
Fixed resistor, resistance box
Absolute expanded uncertainty : 0.27 µΩ to 5.6E1 µΩ
{"row_1":{"col_1":"Range","col_2":"Expanded uncertainty /&nbsp;Ω"},"row_2":{"col_1":"1 mΩ to 10 mΩ","col_2":"(9.0E-05 <em>R</em> + 18E-08)"},"row_3":{"col_1":"10 mΩ to 100 mΩ","col_2":"(8.1E-05 <em>R</em> + 13E-07)"},"row_4":{"col_1":"100 mΩ to 1 Ω","col_2":"(4.5E-05 <em>R</em> + 11E-06)"}}
Potential difference between terminals of standard resistance
Current : up to 10 A
Temperature : (23 ± 1.5)°C
Hygrometry : (50 ± 10)%
Approved on 23 June 2022
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 230 °C to 260 °C
Temperature sensor with display unit
Absolute expanded uncertainty : 6.0E-2 °C
PRT
Calibration by comparison in alcohol, water and oil bath
Approved on 18 October 2021
High voltage and current , High DC voltage: DC voltage meter : 1 kV to 100 kV
High DC voltage measuring systems, DC voltage sources, DC voltmeters
Absolute expanded uncertainty : 3.0E-3 kV to 0.3 kV
Comparison to a voltmeter with a resistive divider
new CMCs
Approved on 13 May 2022
Fluid flow , Volume of liquid : 10 µL to 1.00E4 µL
Pipettes
Relative expanded uncertainty : 1.0E-2 % to 0.25 %
{"row_1":{"col_1":"Range (mL)","col_2":"Expanded uncertainty (%)"},"row_2":{"col_1":"0.01 to 0.02","col_2":"0.25"},"row_3":{"col_1":"0.02 to 0.1","col_2":"0.08"},"row_4":{"col_1":"0.1 to 10","col_2":"0.01"}}
Gravimetric
EURAMET Cg19, ISO 8655-6
Approved on 02 February 2022
Items for disseminating ITS-90 and PLTS 2000 , Temperature : -40 °C to 230 °C
Industrial Platinum Resistance Thermometer
Absolute expanded uncertainty : 2.5E-2 °C
Calibration by comparison in alcohol, water and oil bath
Approved on 06 July 2021
DC resistance , DC resistance standards and sources: intermediate values : 1 Ω to 1.00E6 Ω
Fixed resistor, resistance box
Relative expanded uncertainty : 1.0E1 µΩ/Ω to 2.1E1 µΩ/Ω
{"row_1":{"col_1":"Range","col_2":"Expanded uncertainty (µΩ/Ω)"},"row_2":{"col_1":"1&nbsp;Ω to 10&nbsp;Ω","col_2":"21"},"row_3":{"col_1":"10 Ω to 100&nbsp;Ω","col_2":"14"},"row_4":{"col_1":"100 Ω to 1 kΩ","col_2":"12"},"row_5":{"col_1":"1 kΩ to 10 kΩ","col_2":"10"},"row_6":{"col_1":"10 kΩ to 100 kΩ","col_2":"12"},"row_7":{"col_1":"100 kΩ to 1 MΩ<br>","col_2":"12"}}
Resistance bridge with KV divider
Voltage : up to 50 V
Temperature : (23 ± 1.5)°C
Hygrometry : (50 ± 10)%
Approved on 23 June 2022
DC voltage (up to 1100 V) , DC voltage sources, single values : 1.018 V to 10 V
DC solid state voltage standard
Absolute expanded uncertainty : 3 µV to 1.5E1 µV
{"row_1":{"col_1":"Fixed values","col_2":"Expanded uncertainty"},"row_2":{"col_1":"1.018 V","col_2":"3 µV"},"row_3":{"col_1":"10 V","col_2":"15 µV"}}
Substitution comparison with refrence standard of same value
new CMCs
Approved on 26 April 2022
DC resistance , DC resistance standards and sources: high values : 1.00E6 Ω to 1.00E7 Ω
Fixed resistor, resistance box
Relative expanded uncertainty : 3.0E1 µΩ/Ω
Resistance bridge with KV divider
Voltage : up to 100 V
Temperature : (23 ± 1.5)°C
Hygrometry : (50 ± 10)%
new CMCs
Approved on 23 June 2022
Items for disseminating ITS-90 and PLTS 2000 , Temperature : 230 °C to 260 °C
Industrial Platinum Resistance Thermometer
Absolute expanded uncertainty : 5.0E-2 °C
Calibration by comparison in alcohol, water and oil bath
Approved on 18 October 2021
DC resistance , DC resistance standards and sources: high values : 1.00E7 Ω to 1.00E12 Ω
Fixed resistor, resistance box
Relative expanded uncertainty : 8.0E-2 mΩ/Ω to 4 mΩ/Ω
{"row_1":{"col_1":"Range","col_2":"Expanded uncertainty (mΩ/Ω)"},"row_2":{"col_1":"10 MΩ to 1 GΩ","col_2":"0.08"},"row_3":{"col_1":"1 GΩ to 100 GΩ","col_2":"0.3"},"row_4":{"col_1":"100 GΩ to 1 TΩ","col_2":"4"}}
Expanded uncertainty may be increased for other calibration voltage
2 DC voltage sources method
Voltage : 100 V
Temperature : (23 ± 1.5)°C
Hygrometry : (50 ± 10)%
new CMCs
Approved on 23 June 2022
DC resistance , DC resistance standards and sources: high values : 1.00E7 Ω
Fixed resistor
Relative expanded uncertainty : 2.0E1 µΩ/Ω
Substitution method
Power : below 10 mW
Temperature : (23 ± 1.5)°C
Hygrometry : (50 ± 10)%
new CMCs
Approved on 23 June 2022
DC resistance , DC resistance standards and sources: intermediate values : 1 Ω to 1.00E6 Ω
Fixed resistor
Relative expanded uncertainty : 2 µΩ/Ω to 1.0E1 µΩ/Ω
{"row_1":{"col_1":"<br>","col_2":"Expanded uncertainty (µΩ/Ω)"},"row_2":{"col_1":"1&nbsp;Ω","col_2":"4"},"row_3":{"col_1":"10&nbsp;Ω","col_2":"4"},"row_4":{"col_1":"100&nbsp;Ω","col_2":"3"},"row_5":{"col_1":"1 kΩ","col_2":"3"},"row_6":{"col_1":"10 kΩ<br>","col_2":"2"},"row_7":{"col_1":"100 kΩ","col_2":"6"},"row_8":{"col_1":"1 MΩ","col_2":"10"}}
Substitution method
Power : below 10 mW
Temperature : (23 ± 1.5)°C
Hygrometry : (50 ± 10)%
new CMCs
Approved on 23 June 2022

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