Case study · Pulp and Paper

Paper machine PID loops: flow, pressure and moisture

Prioritize the investigation using the context of each control loop.

Luciai demonstration scenario — illustrates the module combination, no named customer.

Challenge

The problem at the plant

An oscillating loop may require a different investigation from a valve operating at its limit. Without comparing saturation, variability and oscillation, the team struggles to prioritize loops and direct the investigation to instrumentation, maintenance or control.

Solution

How to apply Viziodata in this scenario

The demonstration Loop Sentinel ranking brings together three paper machine examples: headbox flow, headbox pressure and sheet moisture. Each loop includes its priority and observed signals. The team can review the process context and assign the investigation before deciding on any tuning changes.

Features in use

What the team can monitor

  • Health and priority ranking for monitored loops
  • Saturation, oscillation and variability in each loop's context
  • Separate guidance for instrumentation, maintenance and control
  • Three loop examples compared on one screen

In the team's routine

From data to the next step

  1. 01

    Identify priorities

    Review the ranking to locate loops with signs of deviation that need engineering assessment.

  2. 02

    Distinguish the observed signals

    Compare output saturation, oscillation and suspected valve issues. The flow, pressure and moisture examples show different investigation paths.

  3. 03

    Plan the intervention

    Review trends and field conditions with operations. Recommendations in the screenshot belong to the simulated scenario and are not settings for a real plant.

Process engineering

Three loops, different investigation priorities

The example includes LC-101 (headbox flow), PC-205 (headbox pressure) and TC-310 (sheet moisture). The ranking shows signals and guidance from the demonstration scenario, without proving customer efficiency or stability gains.

Demonstration ranking of paper machine flow, pressure and moisture PID loops
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