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논문 기본 정보

자료유형
학술대회자료
저자정보
저널정보
한국유체기계학회 한국유체기계학회 학술대회 논문집 유체기계공업학회 2004 유체기계 연구개발 발표회 논문짐
발행연도
2004.12
수록면
160 - 165 (6page)

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초록· 키워드

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MPA (Multi-Point Averaging) flow element is a new type of differential pressure (DP) flow-sensing device that was developed by Seojin Instech to improve the operating characteristics of the conventional Averaging Pitot Tube (APT) flow elements. Operating characteristics of a flowmeter in general can be defined in terms of measurement accuracy and range. Improvement of accuracy and expanding the range of flow measurement were the two main objectives of the development. To achieve these dual objectives several upstream and downstream pressure-sensing holes were placed in MPA flow element. During the course of the development it was found that certain arrangements of the pressure-sensing holes improved measurement accuracy but did not expand operating flow range of Averaging Pi tot Tubes. Development tests were performed with water between Reynolds number of 50,000 and 1,000,000 in the four-inch test line at the Alden Research Laboratory, U.S.A. Purpose of this paper is to present the relationship between the various locations of the pressure-sensing holes and the performance characteristics of MPA flow element. Furthermore, the operating characteristics of the best performing MPA are compared with those of typical orifice and APT.

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ABSTRACT

1. 서론

2. MPA low pressure tap의 종류

3. 성능시험 (Calibration) 시설

4. 시험결과와 해설

5. APT 및 Orifice 와의 성능비교

6. 결론

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