What is DCS? (Distributed Control System)
A distributed control system (DCS) is a control system for a process plant in which autonomous controllers are distributed throughout the system. A radically new concept appeared in the world…
What is the Purpose of Orifice Plate Drain Hole and Vent Hole?
Orifice Drain hole is required in gas flow service where liquid entrapment may occur. Orifice Vent hole is required in liquid flow service where gas entrapment may occur.
SCADA & Telemetry Systems
A similar control system architecture to Direct Digital Control (DDC) – assigning a single microprocessor to the task of managing multiple control functions, with digital communication between the microprocessor units…
Direct Digital Control (DDC) Systems
Direct Digital Control (DDC) is the automated control of a condition or process by a digital device. DDC takes a centralized network-oriented approach. All instrumentation is gathered by various analog…
PID Controllers : Parallel, Ideal & Series
For better or worse, there are no fewer than three different forms of PID equations implemented in modern PID controllers: the parallel, ideal, and series. Some controllers offer the choice…
PID Controllers Graphical Analysis
A common exercise for students learning the function of PID controllers is to practice graphing a controller’s output with given input (PV and SP) conditions, either qualitatively or quantitatively. This…
PID Controller Response with different Input Signals
A very helpful method for understanding the operation of proportional, integral, and derivative control terms is to analyze their respective responses to the same input conditions over time. This section…
SIS Example : Nuclear Reactor Controls
Nuclear fission is a process by which the nuclei of specific types of atoms (most notably uranium-235 and plutonium-239) undergo spontaneous disintegration upon the absorption of an extra neutron, with…
Electronic Symbols
Periodic Table of Electronic Symbols Click on Image to Zoom Download Electronic Symbols Image : Click Here
Overview of PID Control terms
PID control can be a confusing concept to understand. Here, a brief summary of each term within PID (P. I, and D) is presented for your learning benefit. Proportional control…
