Paper Technology International 2020 - Journal - Page 73

PAPERTECHNOLOGYINTERNATIONAL
Data Plot During the “up” Phase
Figure 11: Moisture data from sensor shows that each shift has their own conditioning strategy
Furthermore, when the FFT software was applied to the
sensor data, it became obvious where the differences were coming
from (Figure.10). The peak amplitude from the data plotted on a
time domain, was at 8 hours, which coincides with shift changes.
The crews had been given the freedom, in lieu of having hard
data, to manipulate the showers and uhle box vacuums as they
saw fit during the start-up phase of the felt’s life. With hard data
available from the moisture sensors, felt moisture can be controlled
to the levels that will minimize energy levels and thereby maximize
production. This periodicity can be seen in (Figure. 11.)
CONCLUSIONS
•
•
•
•
New moisture measuring instrumentation is available for the forming and press sections that can be either traversing or fixed,
providing flexibility to the user.
These instruments can monitor and control consistency in the forming section for precise incoming or outgoing moisture
levels.
Onboard software in these instruments can perform vibration and pulsation analysis for predictive maintenance and process
control.
Significant energy savings and improved process control can result in short ROI.
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