The CLOSED LOOP algorithm uses our proprietary Screen Guide & Resolver Assembly™ to monitor and ensure a consistent rate of screen movement.
‘CLOSED LOOP’ “PRESSURE OVERRIDE™" controls incorporate all the features of the TIME CYCLE™ algorithm, i.e., a constant rate of screen advancement is maintained via a feedback loop. The additional PRESSURE OVERRIDE™ (or Differential ΔP Pressure) feature automatically increases the rate of screen advancement by continuously monitoring the pressure before the screen (P1) - or the differential pressure across the screen (ΔP) - to maintain uniform processing pressure (head pressure). The distance of screen advancement in both Time and Pressure Cycles is programmable to achieve a precise rate of movement, allowing for fine tuning to the specific parameters of a given application.
This type of control is best suited for applications where the processing parameters can vary more often, the level of contamination could be unpredictable and with medium to fine filtration.
Screen feed controls regulate the movement of the filter screen based on our proprietary algorithm that has been developed and refined over decades of use in thousands of installations. Directed by this logic, our screen changers become a fully integrated element of the extrusion process, delivering optimum performance.
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