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All issues Volume 12 (2021) Int. J. Metrol. Qual. Eng., 12 (2021) 16 Full HTML
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Table 18

Uncertainty budget in efficiency, Test 1, Lab B.

Type Source of uncertainty Value (U) Unit Distribution Divisor u (xi) Veff uc (xi)
B Uncertainty of the thermometer − T1 0.10000 °C/% Normal 2 0.05000 ∞ 0.05401
B Lower division of the thermometer − T1 0.05000 °C/% Triangular 0.02041 ∞
B Uncertainty of the thermometer − T2 0.10000 °C/% Normal 2 0.05000 ∞ 0.05401
B Lower division of the thermometer − T2 0.05000 °C/% Triangular 0.02041 ∞
B Barometer uncertainty − Pa 0.06900 kPa/% Normal 2 0.03450 ∞ 0.03456
B Lower division of the barometer − Pa 0.00500 kPa/% Triangular 0.00204 ∞
B Pressure gauge uncertainty − P 0.00007 kPa/% Normal 2 0.00004 ∞ 0.00204
B Lower division of the pressure gauge − P 0.00500 kPa/% Triangular 0.00204 ∞
B Volume uncertainty of Q1 − V 0.00024 m3/% Normal 2 0.00012 ∞ 0.00013
B Lower division of the volume − V 0.00005 m3/% Triangular 0.00002 ∞
B Volume uncertainty of Q2 − V 0.00018 m3/% Normal 2 0.00009 ∞ 0.00009
B Lower division of the volume − V 0.00005 m3/% Triangular 0.00002 ∞
B Volume uncertainty of Q3 − V 0.00018 m3/% Normal 2 0.00009 ∞ 0.00009
B Lower division of the volume − V 0.00005 m3/% Triangular 0.00002 ∞
B Volume uncertainty of Q4 − V 0.00025 m3/% Normal 2 0.00012 ∞ 0.00013
B Lower division of the volume − V 0.00005 m3/% Triangular 0.00002 ∞
B Uncertainty of the gas thermometer − Tg 0.33000 °C/% Normal 2 0.16500 ∞ 0.19401
B Lower division of the gas thermometer − Tg 0.25000 °C/% Triangular 0.10206 ∞
B Balance uncertainty − M 0.00200 kg/% Normal 2 0.00100 ∞ 0.00306
B Smaller scale division − M 0.00500 kg/% Rectangular 0.00289 ∞
A Repeatability of Q1 0.50709 % Normal 0.17928 7 0.17928
A Repeatability of Q2 1.41244 % Normal 0.47081 8 0.47081
A Repeatability of Q3 0.09574 % Normal 0.04787 3 0.04787
A Repeatability of Q4 0.32575 % Normal 0.10858 8 0.10858

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