ERROR CHARACTERISTICS OF CLAMP-ON TYPE ULTRASONIC FLOWMETER INSTALLED IN DOWNSTREAM OF BUTTERFLY AND GATE VALVES |
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학술지명 ISFMFE
저자 이동근,조용
발표일 2012-10-26
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This study was performed to found out the deviations for clamp-on type ultrasonic flowmeter installed in downstream of valves. It was selected three types of two-path flowmeter mainly used for K-water as test. Experiment carried out to conformed characteristics of deviation depending on the sensor location, straight pipe length and model for 1-path and 4-path combined 2-path flowmeter. It was selected two kinds of valves with 100% and 50% opening, butterfly valves and gate valves, for flow disturbance factor. Finally, we suggested number of sensors by model, straight pipe length and installed location of sensors satisfying the tolerance depending on the experiment results. |