METHOD AND ARRANGEMENT FOR MEASURING THE ASH CONTENT AND THE QUANTITY OF CRUDE BROWN COAL ON A FOUNDER BELT

摘要

The application relates to a method and an arrangement for measuring the ash content and the throughput of crude lignite on a conveyor belt. In order not to interrupt the measurement even when the layer height is exceeded in the centre, when the upper limit values of the elementary characteristic values MSK 60 . (RHO . H) = 6.5 and MSK 660 . (RHO . H) = 2.5 of a measuring channel in the central part of the conveyor belt is exceeded, the measured value detection is switched to a measuring channel in the off-centre part of the conveyor belt and on dropping below the lower limit values of the elementary characteristic values MSK 60 . (RHO . H) = 0.4 and MSK 660 . (RHO . H) = 0.25 of a measuring channel in the off-centre part of the conveyor belt, the measured value detection is switched to a measuring channel in the central part of the conveyor belt. IMAGE