| Title |
A Study on the Evaluation of Measurement Uncertainty for the National Calibration and Test Organizations |
| Keywords |
Liquid flow measurement ; 액체유량측정 ; Mutual recognition arrangement ; 상호인정협약 ; National calibration and test organization ; 국가교정검사기관 ; Proficiency test ; 숙련도실험 ; Round-robin test ; 순회실험 |
| Abstract |
A proficiency test is one of programs which Korea Research Institute of Standards and Science (KRISS)as national metrology institute, is putting in operation for the mutual recognition arrangement. The Fluid Flow Group of KRISS evaluated the measurement capability for liquid flowmeter calibrator of the national calibration and test organizations. The uncertainty of national standard system was estimated in accordance with Guide to The Expression of Uncertainty in Measurement(ISO)and the turbine flowmeter, which was used for the round-robin test as a reference flowmeter, was characterized. The round-robin tests with the turbine flowmeter package were carried out in 1995 and 1999. The test results of the organizations and those of KRISS agreed within ±0.2%. It is found thus that the organizations have the traceability of the national standard for liquid flow measurement. |