Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2001.06e
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- Pages.601-606
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- 2001
Evaluation of Flow Measurement Uncertainty of Sonic Nozzle
소닉노즐의 유량측정 불확도 평가
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Choi, H.M.
;
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Park, K.A.
;
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Choi, Y.M.
;
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Oh, Y.K.
;
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Yoon, B.R.
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최해만
(한국표준과학연구원, 유체유동그룹)
;
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박경암
(한국표준과학연구원, 유체유동그룹)
;
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최용문
(한국표준과학연구원, 유체유동그룹)
;
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오연균
(한국표준과학연구원, 유체유동그룹)
;
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윤병로
(한국표준과학연구원, 유체유동그룹)
- Published : 2001.06.27
Abstract
Measurement uncertainty should be evaluated according to ISO/IEC 17025. In Flow measurement area, uncertainty evaluation scheme was applied to the reference flow meter, sonic nozzle. Uncertainty was calculated by evaluating various uncertainty factors affected in flow measurement. The expanded uncertainty of the sonic nozzle was 0.21 % (confidence level of 95 %). This evaluation example will be useful in flow measurement uncertainty determination of other flow meters.