process control

Basic Features of Modern PID Controllers

Most modern PID controllers have the following features: Manual versus automatic modeOutput trackingSetpoint trackingAlarm capabilitiesProcess variable (PV) characterization and dampingSetpoint…

4 years ago

Direct Digital Control (DDC)

In direct digital control (DDC) a single computer is able to carry out PID control for multiple loops at the…

4 years ago

P&IDs and Loop Diagrams

Process and Instrument Diagrams (P&IDs), also called Piping and Instrumentation Diagrams and Loop diagrams are construction and documentation drawings that…

4 years ago

Ratio Control

In some processes, it is a common requirement for two flows to be kept in precise ratio to each other…

4 years ago

Feedforward Control

Feedforward control is based on principle of pre-emptive load counter-action i.e. if all major loads (i.e. disturbances) on a process…

4 years ago

Benefits of Cascade Control

We know very well that closed loop control provides increased performance over open loop control. So it would be rational…

4 years ago

The Basics of Ladder Diagrams for Programming PLCs

The ladder diagrams are universally used as a symbolic and schematic way to represent the interconnection between the elements in…

4 years ago

What is Sequential Control System?

This is a control system that manages a process defined by a series of tasks to be performed i.e. a…

4 years ago

Basic Features of Distributed Control Systems (DCS)

In distributed control system, each process has its own separate controller located at the site. These local controllers are interconnected…

4 years ago

What is Process Control?

Process control can be defined as a control system that manages a particular industrial process so that a uniform, correct…

4 years ago