Method for controlling discharge timing of centrifugal separator and centrifugal separator based on pressure measurement

摘要

The method controls timing of a discharge event of a centrifugal separator, during which discharge event at least part of a heavier liquid and/or sludge or solids separated from a lighter liquid is discharged from the separator through at least one discharge opening. The discharge opening is opened and/or closed hydraulically. The method comprises the steps of waiting for a scheduled discharge time, measuring the pressure of the liquid used for opening and/or closing the discharge opening, comparing the measured pressure to a predetermined limit value, and, in the case the pressure is below the limit value, delaying the discharge event.