대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)
- 대한설비공학회 2008년도 하계학술발표대회 논문집
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- Pages.1042-1046
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- 2008
10톤 용량의 중량식 교정장치에 대한 불확도 개선
Improvement of Uncertainty for Gravimetric Flow Calibrator
- Lee, Dong-Keun (Korea Institutes of Water Environment, K water) ;
- Park, Joo-Young (Korea Institutes of Water Environment, K water) ;
- Lee, Haeng-Soo (Korea Institutes of Water Environment, K water)
- 발행 : 2008.06.25
초록
Both the weighing bridge and the diverter system is a important component in achieving a high accuracy liquid flow rate standard using a static gravimetric method. The weighing bridge is a tank which weighing collected flow with a load cells. The diverter is a moving device used to direct flow alternately along its normal course(by pass) or towards the weighing tank. The time needed for collection into the weighing tank is measured using a timer. So it is important to the diversion period is sufficiently fast and triggering point of timer which is determined the filling time. On this studies show that the measurement deviation of load cell and uncertainty of diverter system for changing diversion speed and triggering point was estimated in accordance with Guide to The Expression of Uncertainty in Measurement(ISO).
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