Feeder Survey (2)

Impact Flow Meter Weigh Feeder Air-lift System L-i-W
System
control concept volumetric gravimetric volumetric volumetric
feed rates [t/h] up to 1000 up to 350 up to 500 up to1000
accuracy
long term  2.0% 1.0% 2.0% 2.0%
accuracy
short term at best
 2.0% 2.0% at best
2.0% worse than 2.0%
sensitivity
to adjustments low 1.0% at best
1.0% low
sensitivity to external effects high high low high
system design closed open closed closed
maintenance low high low high