ACM Facility Safety and Endress+Hauser Announce P&ID Interpretation Workshop

  • News

This 2-day course gives students the ability to read and understand P&IDs for the analysis of emergency situations; and for safety, environmental and regulatory compliance issues such as Process Hazards Analysis and HAZOP studies.

Control Station introduces PID tuning evaluation program

  • News

The program enables participating manufacturers to validate PlantESP’s contribution to improved production performance and bottom-line profitability prior to commercial licensing.

Control Station supplies PID tuning software to Rockwell Automation

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Control Station's LOOP-PRO TUNER PID controller tuning software is integrated within the PlantPAx engineering workstation.

ExperTune introduces Virtual Classroom for PID Training

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The interactive training is provided by a live instructor, and includes hands-on practice using ExperTune’s “Virtual Classroom.”

Ziegler-Nichols Tuning Rules And Limitations

  • by John Gerry, P.E.
  • News

The standard reference for PID tuning seems to be the Ziegler-Nichols tuning rules developed in 1942 on a pneumatic controller.

The Fast Way to Tune Slow Loops

  • by John Gerry, P.E.
  • News

To tune a control loop, analysis software must process some loop data. You must test or bump the loop somehow. For example a setpoint change in automatic or a controller output change in manual mode. 

Derivative Action - The Good, Bad, and Ugly

  • by John Gerry, P.E.
  • News

The reason to use derivative (or D) is that you can use more Proportional and especially more Integral action. The result can be a much faster reacting control loop.