instrumentation and control

PFDs vs. P&IDs

Process Flow Diagrams (PFDs) defines the major elements of the process schematically i.e. the interconnections of process vessels, pipes and…

6 months ago

Process Instrumentation Diagnostics & Communication Interfaces

There are various technologies that are available that help plant automation personnel to obtain diagnostic data which inform the type…

6 months ago

Sources of Coherent Interference/Noise in Instrumentation Systems

Introduction The knowledge of how to design low noise instrumentation systems is an essential skill that any practicing instrumentation engineer…

6 months ago

What is Optimal Control?

Optimal control is whereby the requirements are formulated as either the minimization of a cost index or the maximization of…

6 months ago

Fiber Optic Temperature Sensors: Principle of Operation & Applications

As the name suggests these sensors employs fiber optics technology to function. A fiber optic sensor generally guides light to…

6 months ago

Radar Level Transmitters: Operating Principle & Applications

Radar level transmitter basically employs electromagnetic waves to determine the fluid level in a tank. It converts level information into…

7 months ago

Pneumatic Signal Transmission System

Signal transmission in process instrumentation and control systems is largely done via electrical transmission but there are a few areas…

7 months ago

How Redundancy is Achieved in Process Plants

In similar way to electronic systems, redundancy is extensively employed technique for enhancing the reliability of many industrial plants and…

7 months ago

How Interferometers are used as Position Sensors

Interferometer sensors employ energy in the form of light or sound to make precise position/location measurements. There are a number…

7 months ago

Phase Locked Loop High Precision Motor Speed Control System

AC generators can be utilized in high precision control systems. The AC generator rotor is rotated by the rotating shaft…

7 months ago