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| Ramsey
Loss-In-Weight Feeders |
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| Ramsey Loss-In-Weight
Feeders maintain quality and weighing accuracy, reduce material
waste, and improve blend consistency for increased profits. They
accurately control the flow of powders, pellets, flakes or
granules to critical processes. They handle hot, floodable and
difficult material and are unaffected by dust and material
accumulation. |
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Product Detail |
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| The
Ramsey Loss-In-Weight Feeders maintain quality, weighing accuracy,
reduce material waste and improve blend consistency for increased
profits.
The accurate feeding of a dry bulk material is often critical
to maintaining product quality. A feeder that weighs accurately
and reliably can reduce material waste, improve blend consistency,
and increase profits. Ramsey's Loss-in-Weight systems
accurately control the flow of powders, pellets, flakes or
granules to critical processes.
Theory of Operation
The continuous Loss-in-Weight principle involves weighing the
entire feeding system (hopper, feeder and bulk materials) by means
of a static type scale system and controlling the discharge feed
rate of the bulk material, by means of a variable speed motor.
Material is discharged from the system (via screw or vibratory
tube or tray) with the measured "loss in weight" per
unit time (dv/dt) compared to the desired (set) feed rate. The
difference between the actual (measured) rate and the desired
(set) rate produce a corrective action by the feed rate controller
(Micro-Tech 2104), which automatically adjusts the feeder speed,
thus maintaining accurate feed rates with no process lag.
Advantages of Loss-in-Weight Feeding
 | Handles hot, floodable and difficult materials
| Unaffected by dust and material accumulation
| Well suited for low feed rate applications
| Entire system is weighed. No errors from belt tensioning or
tracking.
| No transportation lag time exists, which assures precision
second-to-second accuracy.
| Feed accuracy can always be checked during normal operation,
without the need for sampling. |
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