Degree of Equivalence of Realizations of the Triple Points of Argon and Oxygen Between NIS and LNE-Cnam

Consistency of the national realization of dew-point temperature using NIS standard humidity generators

“…In the present work, the measured difference between the two generators DT d , with the pair uncertainty (k = 2), represent the degree of equivalence and the level of consistency for NIS generators with a pair uncertainty given as [1]:…”

“…The main objective of this comparison was to compare the realizations of dew-point temperature and to establish the level of consistency between the two generators. For a level of consistency between two measurements, it is expressed by the difference between the measured values, m 1 À m 2 , and the expanded pair uncertainty of this difference U p [1]. The comparison measurements revealed dew-point temperature differences of 0.02°C and 0.07°C with expanded pair uncertainties of ±0.09°C and ±0.15°C.…”

New adiabatic calorimeter for realization the triple point of water in metallic-sealed cell at NIS-Egypt

“…This block contains several holes with different diameters to accommodate up to four thermometers at the same run as shown in Figure 1. The geometry of the cell has been chosen to be similar as those made for argon and oxygen triple point cells [5,6].…”

“…The vacuum can (3) is assembled with a flange (5). Evacuation was achieved through the central main tube (6) that is connected to a turbo-molecular pump.…”