UPM Caledonian Paper uses electromagnetic flow meters to measure water, chemicals and stock flow of varying consistency as a crucial part of its production. It is now achieving greater measurement accuracy in the online control of the thick stock flow to a paper machine since installing ABB’s new AC-Master AC excitation flow meter. Compared with the previous pulsed DC excitation meter, the new instrument features increased coil excitation frequency and digital signal processing technology.Where backflow can occur, flow is measured bi-directionally.
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