It is possible to convey electrical power and communicate analog…
An engineer named Bob Metcalfe conceived the idea of Ethernet in 1973,…
Light has long been used as a long-range signaling medium. While…
I remember first learning about the world-wide Internet, and wondering…
DC electric current signals may also be used to communicate process…
Some self-powered (4-wire) analog electronic transmitters are designed…
Learning PLC programming is a very important skill. If your job…
Some of the simplest types of digital communication networks found in…
RTDs are completely passive sensing elements, requiring the…
Labwork is an essential part of any science-based curriculum. Here,…
Programmable logic controllers are essentially nothing more than…
pH is the measurement of the hydrogen ion activity in a liquid…
One of the great benefits of digital technology is the ability to…
Developed by the Modicon company (the original manufacturer of the…
There is much to be said for neatness of assembly in electrical signal…
The vast majority of PID controllers in service today are digital in…
Layer 1 of the OSI Reference Model is where we define the…
A design-based fortification is one rooted in technical details of…
The following animation shows a rotating phasor in three-dimensional…
An electric motor is often used as a discrete control element in a…
The reason why a pneumatic control valve’s stem position…
Multiple accessories exist for pressure-sensing devices to function…
Displacer level instruments exploit Archimedes’ Principle to…
Some of the simplest types of digital communication networks found in…
Feedback Control System Components Before we begin our discussion on…
Data-processing modules within FF systems are known as function…
In the United States, the most common language used to program PLCs is…
Diagnostic ability is arguably the most difficult skill to develop…
For better or worse, there are no fewer than three different forms of…
Sensors used to measure vibration come in three basic types:…
In November of 2007 a new computer virus was submitted to a virus…
A limitation inherent to pneumatic valve actuators is the amount of…
Although it seems each model of PLC has its own idiosyncratic standard…
PID control can be a confusing concept to understand. Here, a brief…
Any conductor possesses a characteristic called inductance: the…
Light has long been used as a long-range signaling medium. While…
An electromechanical relay is an electrical switch actuated by an…
A positive displacement flowmeter is a cyclic mechanism built to pass…
