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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)
Montenegro, BMM (Bureau of Metrology (Montenegro))
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
-80 °C to 5 °C
Sensors with display unit (only IPRT)
Absolute expanded uncertainty
:
2.0E-2 °C
Comparison
Stirred liquid bath : Ethanol
Approved on 10 November 2015
Approved on 10 November 2015
Institute service identifier : QP.LT.02
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
425 °C to 650 °C
Sensors with display unit (only IPRT)
Absolute expanded uncertainty
:
0.35 °C
Comparison
Dry-well calibrator : Air
Approved on 10 November 2015
Approved on 10 November 2015
Institute service identifier : QP.LT.02
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
-80 °C to 5 °C
IPRT
Absolute expanded uncertainty
:
2.0E-2 °C
Comparison
Stirred liquid bath : Ethanol
Approved on 10 November 2015
Approved on 10 November 2015
Institute service identifier : QP.LT.03
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
278 °C to 425 °C
IPRT
Absolute expanded uncertainty
:
0.2 °C
Comparison
Dry-well calibrator : Air
Approved on 10 November 2015
Approved on 10 November 2015
Institute service identifier : QP.LT.03
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
425 °C to 650 °C
IPRT
Absolute expanded uncertainty
:
0.35 °C
Comparison
Dry-well calibrator : Air
Approved on 10 November 2015
Approved on 10 November 2015
Institute service identifier : QP.LT.03
Frequency ,
Frequency
:
0.1 kHz to 3.50E5 kHz
General frequency source
Relative expanded uncertainty
:
2.0E-12
Frequency counter
-
Temperature : 23°C ± 2°C
Relative humidity : 50 % ± 20 %
Averaging time : 100s
For square wave or pulsed signals
Approved on 22 January 2022
Institute service identifier : QP.7.2/01-LTF
Linear dimensions ,
Diameter standards
:
8 mm to 150 mm
Internal Cylinder (ring): diameter D
Absolute expanded uncertainty
:
0.84 µm to 0.98 µm
Q[0.85 µm, 3.2E-06D]
1-D comparator and 2 contacting probes; Reference ring
Approved on 24 May 2022
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
5 °C to 80 °C
Sensors with display unit (only IPRT)
Absolute expanded uncertainty
:
2.0E-2 °C
Comparison
Stirred liquid bath : Water
Approved on 10 November 2015
Approved on 10 November 2015
Institute service identifier : QP.LT.02
Fluid flow ,
Volume of liquid
:
2 L to 500 L
Standard Capacity Measures, proving tanks
Relative expanded uncertainty
:
2.0E-2 %
Gravimetric
Liquid : water
Reference Temperature : 15 °C
Approved on 11 September 2019
Institute service identifier : QP.LV.02
Frequency ,
Frequency
:
100 kHz to 3.50E5 kHz
General frequency source
Relative expanded uncertainty
:
2.0E-12
Frequency counter
-
Temperature : 23°C ± 2°C
Relative humidity : 50 % ± 20 %
Averaging time : 100s
For measuring sinewave signals
Approved on 22 January 2022
Institute service identifier : QP.7.2/01-LTF
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
278 °C to 425 °C
Sensors with display unit (only IPRT)
Absolute expanded uncertainty
:
0.2 °C
Comparison
Dry-well calibrator : Air
Approved on 10 November 2015
Approved on 10 November 2015
Institute service identifier : QP.LT.02
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
278 °C to 425 °C
Base metal thermocouples Type K, N, T, J
Absolute expanded uncertainty
:
0.3 °C
Comparison
Dry-well calibrator : Air
Approved on 8 June 2016
Approved on 08 June 2016
Institute service identifier : QP.LT.04
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
5 °C to 80 °C
Liquid in glass thermometer
Absolute expanded uncertainty
:
2.0E-2 °C
Comparison
Stirred liquid bath : Water
Approved on 10 November 2015
Approved on 10 November 2015
Institute service identifier : QP.LT.01
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
210 °C to 278 °C
Liquid in glass thermometer
Absolute expanded uncertainty
:
5.0E-2 °C
Comparison
Stirred liquid bath : Oil
Approved on 10 November 2015
Approved on 10 November 2015
Institute service identifier : QP.LT.01
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
80 °C to 278 °C
IPRT
Absolute expanded uncertainty
:
2.0E-2 °C
Comparison
Stirred liquid bath : Silicon oil
Approved on 10 November 2015
Approved on 10 November 2015
Institute service identifier : QP.LT.03
Linear dimensions ,
End standards
:
0.5 mm to 100 mm
Gauge block: central length L
Absolute expanded uncertainty
:
5.5E1 nm to 1.8E2 nm
54 nm + 1.2E-06 L
Mechanical comparison
Approved on 10 October 2017
Institute service identifier : QP.LL.01
Pressure ,
Gauge pressure
:
3.00E5 Pa to 6.00E6 Pa
Pressure balance, pressure gauge
Absolute expanded uncertainty
:
7.1E1 Pa to 4.7E2 Pa
50+7E-05p p pressure in Pa
The uncertainty is expressed in Pa
Pressure balance, pressure gauge
Approved on 11 August 2021
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
-80 °C to 278 °C
Base metal thermocouples Type K, N, T, J
Absolute expanded uncertainty
:
0.2 °C
Comparison
Stirred liquid baths : Water, ethanol, oil
Approved on 8 June 2016
Approved on 08 June 2016
Institute service identifier : QP.LT.04
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
80 °C to 278 °C
Sensors with display unit (only IPRT)
Absolute expanded uncertainty
:
2.0E-2 °C
Comparison
Stirred liquid bath : Silicon oil
Approved on 10 November 2015
Approved on 10 November 2015
Institute service identifier : QP.LT.02
Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
-58 °C to 5 °C
Liquid in glass thermometer
Absolute expanded uncertainty
:
2.0E-2 °C
Comparison
Stirred liquid bath : Ethanol
Approved on 10 November 2015
Approved on 10 November 2015
Institute service identifier : QP.LT.01
