Mike: Nearly every analog instrument uses the 4-20 mA loop. Field transmitters, positioners, and variable frequency drives ...

He provides control loop optimization services and training to industrial companies worldwide and has more than 20 years of experience in process control, including seven years in power plants.

Two process control signaling schemes were to be supported — the 0 to 10 VDC analog signal, and the venerable 4-20 mA current loop. All that’s needed for both outputs is an Arduino and an ...

Only through proper troubleshooting and then solving the underlying problems can control loop performance be improved. Process design certainly plays a role in control loop performance, but ...

A control loop can be causing its own oscillation, or it could be affected by an interacting oscillation somewhere else in the process. A simple way to determine if the origin of the oscillation lies ...

APC paradigm now more affordable, agile, scalable, and reliable. By Allan Kern, PE. In this article, as in industry, advanced process control (APC) refers primarily to multi-variable ...

Understanding the inner workings of a PID loop and how it should be tuned for each process has become an essential skill for the boiler service technician and control systems design engineer. The ...

One segment of a process control system. An open-loop control process requires human intervention, whereas a closed-loop system is entirely automated (see PID). See process control. THIS ...

Industrial control systems can be categorized in two types: open-loop and closed-loop systems. The open-loop control system is a continuous control system that provides no feedback from its output.

In my estimation, this combination of human-in-the-loop automation can automate anywhere from 40%-100% of the process done by traditional BPOs, depending on the complexity, while helping ensure ...