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An analysis of the use of electrical power measurements for process control in large‐scale stirred vessels
Author(s) -
Hjorth Sven,
Karlsson Lennart,
Friberg Paal,
Boon Lotte
Publication year - 2000
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450780613
Subject(s) - agitator , electric power , power (physics) , calibration , process (computing) , scale (ratio) , electric motor , automotive engineering , mechanical engineering , engineering , materials science , electrical engineering , computer science , mathematics , physics , statistics , quantum mechanics , impeller , operating system
Abstract The mechanical power that is transferred to a liquid via the shaft of an agitator is obtained from a measurement of the electrical power flowing into the electric motor within an accuracy of less than 5%. The accuracy obtained is limited by the calibration procedure. As the implementation of an electric power measurement is both simple and comparatively inexpensive, the technique is suitable for a continuous monitoring of the power used by agitators in the process industries.