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Consistency - Consistency Measurement and Control


Objectives

This course covers the material necessary to understand and properly apply various techniques for the measurement and control of pulp stock consistency.

You will learn to :

  • Select appropriate measurement techniques
  • Apply on-line consistency transmitters for process monitoring and control of pulp stock consistency
  • Choose appropriate tuning to optimize loop performance
  • Apply effective control strategies to a variety of pulp consistency applications
  • Troubleshoot problems with control loop components and configuration
Benefits:
  • Students will be able to select, install, configure, and tune consistency control loops for process monitoring and control - effectively and efficiently. This will reduce installation costs, maintenance costs, and costs of ongoing operation.

Notice

Top Control offers this training in collaboration with Metso Automation. For more information about this training, we invite you to visit their website at: www.metsoautomation.com/training/

Who should attend

Anyone who wants to understand how to determine pulp stock consistency for measurement and control.

Schedule

From 8:30 am to 12:00 pm and from 1:00 pm to 4:30 pm.

Content

Consistency measurement:

  • What is consistency - really
  • Types of consistency sensors
  • Sampling and laboratory analysis
  • Selection of consistency devices
  • Proper installation of consistency devices
  • Limitations of consistency measurement
Control theory and application:
  • Control loops
  • Benefits of good consistency control
  • Noise, load, disturbances
  • Control objectives
  • Defining "good" control
  • The PID controller
  • Filters - selection and sizing
Practical aspects of modern control systems:
  • Control algorithms and structures
  • When to use derivative mode
  • Scan time, resolution, configuration
Controller tuning:
  • Loop tuning for optimal performance
  • Traditional tuning methods
  • Significance of dead time
  • Modern tools for tuning
  • Noise
  • Disturbances
  • Hysteresis
  • Saturation
  • Non-linearity
Advanced control theory and applications:
  • Cascade control
  • Feedforward control
  • Ratio control
Consistency control applications:
  • Dilution control
  • Stock blending
  • Basis weight control
  • Retention control
Additional tools and references:
  • Process variability
  • Consistency adviser
  • ExperTune
  • Sources of additional training
  • Reference books, articles and web sites