Gravimetric feeding for optimum precision, whatever your material
The robust design of the PFISTER® TRW rotor weighfeeder is ideal for metering coarse and hot bulk materials such as clinker, pre-ground cement, limestone and gypsum with consistency and precision.
Since the material only comes into contact with the steel rotor, wear is negligible. And as a complete system comprising material extraction, weighing and dosing, it’s easy to operate and very reliable.
The gravimetric feeding technology enables high levels of accuracy and consistency, regardless of the variability in the materials. Our ProsCon® prospective control advanced weighing electronics anticipates changes in the feed and adjusts the rotor speed accordingly to ensure the output is always the same. Feed rates of up to 400 t/h are possible, as well as material temperatures up to 200˚C.
Precise material dosing with ProsCon® Prospective Control
Our rotor weighfeeders use ProsCon® prospective control, which adapts to changes in the feed to ensure consistent and highly precise dosing, even of coarse and hot materials. Short-term and long-term accuracy is assured, giving you a more efficient and consistent operation. You can also choose a pre-hopper equipped with load cells to enable online calibration for easily repeatable measurements.
It doesn’t even matter if you’re not operating at your usual feed rate. High levels of accuracy are guaranteed from 10% - 100% of your maximum feed rate. And quick adjustments are simple, too. ProsCon® ensures virtually no reaction time in changes of the feed rate – without loss in accuracy.
OUTSTANDING RELIABILTY. LONG SERVICE LIFE
We’ve designed the PFISTER® TRW rotor weighfeeder to be as straightforward as possible, so that it delivers the utmost performance and availability over a long service life. Minimal moving parts. Slow-moving rotor. The material is only in contact with steel, minimising wear.
And you can be sure that the little maintenance required will be simple, since all the measuring parts and drives are accessible from the outside. Extraction, weighing, feeding and dosing are all included in one enclosed system. There’s no clean-up since there can be no spillage.
PFISTER® Weighing and dosing principle
All our rotor weighfeeders are based on the same weighing and dosing principle.
Material is extracted out of the material silo and is transported in the rotor chambers (1) from the inlet (2) to the outlet (3). The rotor is mounted on bearings that form a weighing axis (A-A). This axis (A-A) is eccentric to the rotor shaft, and through the middle of the inlet. The third point is suspended at a load cell (6), which weighs the content in the rotor wheel gravimetrically. This means the rotor weighfeeder measures actual kilograms and is therefore a real scale.
With the measurement of the gravimetric force, together with the related rotor wheel position is stored by the advanced weighing electronics (ProsCon®) and used to calculate the required rotor wheel speed. The greater the load, the slower the rotation and vice versa. The feeder then discharges the material at the outlet (3) with a highly accurate mass stream.
F-Control™ Rotor Weighfeeder Control System
The rotor weighfeeder control system is called F-Control™. It includes a control cabinet (FCC), which is located in the plant’s motor control centre (MCC), as well as local control panels (LCP) specifically designed for the environment surrounding the rotor weighfeeder (FIELD). The FCC contains all controller parts for dosing and regulation of the rotor speed, and also monitors these functions. The LCP contain the interface to link the F-Control™ dosing control to the process and all devices to provide local access for maintenance and service operation.
Downloads
Datasheet
PFISTER® TRW Rotor Weighfeeder
24.06.2026 |
1.47 MB |
English