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Articles & News on PID and Loop Control

Using Flowmeter Measurements to Improve Quality

  • by Adam Booth
  • February 3, 2021
  • Feature

Food plants make extensive lab based quality measurements to ensure product quality. Coriolis flowmeters can make some of these measurements in real time, saving time and money. From January 2021 InTech Focus.

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

  • January 8, 2015
  • 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

  • June 27, 2013
  • 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

  • January 4, 2013
  • News

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

ExperTune introduces Virtual Classroom for PID Training

  • April 18, 2012
  • News

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.
  • February 7, 2003
  • 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.
  • February 7, 2002
  • 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.