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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)
Viet Nam, VMI-STAMEQ (Viet Nam Metrology Institute, Directorate for Standards and Quality)
Items for defining ITS-90 ,
Temperature
:
419.527 °C
SPRT
Absolute expanded uncertainty
:
2 mK
Zinc freezing point cell
3-zone furnace, seal cellModified on 09 February 2015
Approved on 22 January 2013
Institute service identifier : VMI-STAMEQ/T-5-132
CMC ID :
APMP-T-VN-000006YG-1
Items for defining ITS-90 ,
Temperature
:
29.7646 °C
SPRT
Absolute expanded uncertainty
:
0.6 mK
Gallium melting point cell
Cryostat, seal cellModified on 09 February 2015
Approved on 22 January 2013
Institute service identifier : VMI-STAMEQ/T-3-132
CMC ID :
APMP-T-VN-000006YE-1
Pressure ,
Gauge pressure: oil medium
:
0.5 MPa to 100 MPa
Pressure gauge
Absolute expanded uncertainty
6.0E-05p p pressure in Mpa
The uncertainty is expressed in MPa
Direct comparison with pressure standard
Temperature : (20 ± 2) °C
Approved on 18 October 2011
Institute service identifier : VMI-P-2-3.2.2
CMC ID :
APMP-M-VN-00000617-1
Items for defining ITS-90 ,
Temperature
:
-38.8344 °C
SPRT
Absolute expanded uncertainty
:
0.5 mK
Mercury triple point cell
Cryostat, seal cellModified on 09 February 2015
Approved on 22 January 2013
Institute service identifier : VMI-STAMEQ/T-1-132
CMC ID :
APMP-T-VN-000006YD-1
Pressure ,
Absolute pressure: oil medium
:
0.5 MPa to 100 MPa
Pressure gauge
Absolute expanded uncertainty
6.0E-05p p pressure in Mpa
The uncertainty is expressed in MPa
Direct comparison with pressure standard
Temperature : (20 ± 2) °C
Approved on 18 October 2011
Institute service identifier : VMI-P-1-3.1.2
CMC ID :
APMP-M-VN-00000616-1
Items for defining ITS-90 ,
Temperature
:
231.928 °C
SPRT
Absolute expanded uncertainty
:
1.2 mK
Tin freezing point cell
3-zone furnace, seal cellModified on 09 February 2015
Approved on 22 January 2013
Institute service identifier : VMI-STAMEQ/T-4-132
CMC ID :
APMP-T-VN-000006YF-1
Pressure ,
Gauge pressure: oil medium
:
0.5 MPa to 100 MPa
Pressure balance
Absolute expanded uncertainty
5.5E-05p p pressure in Mpa
The uncertainty is expressed in MPa
Direct comparison with pressure standard: crossfloat
Temperature : (20 ± 2) °C
Approved on 18 October 2011
Institute service identifier : VMI-P-2-3.2.2
CMC ID :
APMP-M-VN-00000618-1