(Will be addressed in future versions of this book)
Textbook
Modern DC and AC motor drives provide features useful when using electric motors as final control elements.…
Textbook
In addition to directly performing logic functions, electromechanical relays may also be used as interposing…
Textbook
(Will be addressed in future versions of this book)
Textbook
Those familiar with industrial instrumentation will find much within the electric power industry remarkably…
Textbook
Electromechanical relays may be connected together to perform logic and control functions, acting as logic…
Textbook
A technological advance introduced in the late 1980’s was HART, an acronym standing for Highway…
Textbook
A Safety Instrumented Function, or SIF, is one or more components designed to execute a specific…
Textbook
A simple control system drawn in block diagram form looks like this: Information from the measuring device…
Textbook
Perhaps the most confusing aspect of discrete sensors is the definition of a sensor’s normal status.…
Textbook
Fieldbus devices require far more attention in their initial setup and commissioning than their analog…
Textbook
Disturbances in the liquid tend to complicate liquid level measurement. These disturbances may result from…
Textbook
One of the fundamental laws of electric circuits is Kirchhoff’s Current Law, which states the algebraic…
Textbook
Learning PLC programming is a very important skill. If your job involves programming, then you will likely…
Textbook
One of the most important accessories for any temperature-sensing element is a pressure-tight sheath known as…
Textbook
Steam boilers are very common in industry, principally because steam power is so useful. Common uses for steam…
Textbook
(Will be addressed in future versions of this book)
Textbook
Volumes could be written about poor diagnostic technique. The following mistakes are not intended to comprise…
Textbook
Although it seems each model of PLC has its own idiosyncratic standard for programming, there does exist an…
Textbook
“Feedforward” is a rather under-used control strategy capable of managing a great many types of…
Textbook
A sliding-stem valve body is one where the moving parts slide with a linear motion. Some examples of…
Textbook
Stoichiometry is the accounting of atoms before and after a chemical reaction. It is an expression of the Law…
Textbook
Imagine a major marathon race, where hundreds of runners gather in one place to compete. When the starting gun…
Textbook
In November of 2007 a new computer virus was submitted to a virus scanning service. The purpose of this new…
Textbook
Feedback Control System Components Before we begin our discussion on process control, we must define a few key…
Textbook
A limitation inherent to pneumatic valve actuators is the amount of air flow required to or from the actuator…
Textbook
(Will be addressed in future versions of this book)
Textbook
Recall that an exothermic chemical reaction is one that releases a net sum of energy, as opposed to an…
Textbook
Certain types of nuclear radiation easily penetrates the walls of industrial vessels, but is attenuated by…
Textbook
Lipták, Béla G. et al., Instrument Engineers’ Handbook – Process Measurement and Analysis Volume I,…
Textbook
A vertical column of fluid generates a pressure at the bottom of the column owing to the action of gravity on…
Textbook
When I began teaching full-time in 1998, most of what I thought I understood about good teaching was actually…
Textbook
In order for any PID controller to be practical, it must be able to do more than just implement the PID…
Textbook
So far we have just looked at instruments that sense, control, and influence process variables. Transmitters,…
Textbook
The final element of PID control is the “D” term, which stands for derivative. This is a calculus…
Textbook
Human-machine interfaces, or HMIs, are a critical part of nearly all control systems, complementing the…
Textbook
A simple control system drawn in block diagram form looks like this: Information from the measuring device…
Textbook
Another category of control strategies involves the use of signal relays or function blocks with the ability…
Textbook
A fundamental principle in instrumentation system troubleshooting is that every instrument has at least one…
Textbook
Control strategies such as cascade, ratio, feedforward, and those containing limit and selector functions can…
Textbook
Facebook
Google
GitHub
Linkedin