pH is the measurement of the hydrogen ion activity in a liquid…
RTDs are completely passive sensing elements, requiring the…
Developed by the Modicon company (the original manufacturer of the…
Some self-powered (4-wire) analog electronic transmitters are designed…
An engineer named Bob Metcalfe conceived the idea of Ethernet in 1973,…
RTDs are completely passive sensing elements, requiring the…
A design-based fortification is one rooted in technical details of…
Labwork is an essential part of any science-based curriculum. Here,…
The vast majority of PID controllers in service today are digital in…
It is possible to convey electrical power and communicate analog…
Programmable logic controllers are essentially nothing more than…
Layer 1 of the OSI Reference Model is where we define the…
Light has long been used as a long-range signaling medium. While…
I remember first learning about the world-wide Internet, and wondering…
Learning PLC programming is a very important skill. If your job…
DC electric current signals may also be used to communicate process…
One of the great benefits of digital technology is the ability to…
There is much to be said for neatness of assembly in electrical signal…
pH is the measurement of the hydrogen ion activity in a liquid…
Some of the simplest types of digital communication networks found in…
To review, voltage is the measure of potential energy available to…
A laser is a light source emitting waves of light that not only…
Regulating the electric power sent to an electric motor is a task…
Many liquid substances undergo a process whereby their constituent…
The simplest form of 4-20 mA current loop is the type used to…
A special type flowmeter suited for powdered or granular solids is the…
Much has been written about the benefits of robust PID control.…
Developed by the Modicon company (the original manufacturer of the…
The vast majority of modern process transmitters (both analog and…
As we have seen, the concept of integration is finding the…
Phasors are to AC circuit quantities as polarity is to DC circuit…
There is much to be said for neatness of assembly in electrical signal…
A design-based fortification is one rooted in technical details of…
Hydrogen ion activity in aqueous (water-solvent) solutions is a very…
Self-balancing mechanisms consisting solely of a baffle/nozzle…
An important performance parameter for transmitter instruments is…
(Will be addressed in future versions of this book)
In addition to Ohm’s Law, we have a set of rules describing how…
Visualizing the actions of P, I, and D tuning parameters using graphs…
A level switch is one detecting the level of liquid or solid (granules…
