111 差圧伝送器による導圧管の詰まり診断に関する研究 : 第4報:水蒸気ラインにおける詰まり検出(セッション3 評価・診断I)

概要

論文の詳細を見る
Differential pressure transmitters with an orifice are widely used as a reliable flowmeter in process industries. The most frequent problem with this type of flowmeter is blockage in impulse line: it causes a severe deterioration of measurement accuracy. Hence, this paper develops a new detection method of impulse line blockage with digital differential pressure transmitter in a steady-state steam line. This method, which utilizes inherent pressure fluctuations of the steam line, consists of two functions: (i) detecting impulse line blockage by evaluating standard deviations of differential pressure, and (ii) specifying which side of impulse line is blocked from the phase difference between two impulse lines.
社団法人日本機械学会の論文
2006-11-29