A fundamental principle in instrumentation system troubleshooting is that every instrument has at least one…
Textbook
Shown here is a partial listing of principles applied in the subject matter of this chapter, given for the…
Textbook
Although it seems each model of PLC has its own idiosyncratic standard for programming, there does exist an…
Textbook
A simple control system drawn in block diagram form looks like this: Information from the measuring device…
Textbook
As we have seen, the concept of differentiation is finding the rate-of-change of one variable compared to…
Textbook
Imagine a major marathon race, where hundreds of runners gather in one place to compete. When the starting gun…
Textbook
Any power grid large enough to meet the demand of an entire nation must have multiple generators drawing from…
Textbook
A fundamental limitation of proportional control has to do with its response to changes in setpoint and…
Textbook
A powerful mathematical concept useful for analyzing practically any physical system – electrical…
Textbook
In addition to directly performing logic functions, electromechanical relays may also be used as interposing…
Textbook
It is often useful to express the amplitude of an alternating quantity such as voltage or current in terms…
Textbook
Current is the name we give to the motion of electric charges from a point of high potential to a point of low…
Textbook
Stoichiometry is the accounting of atoms before and after a chemical reaction. It is an expression of the Law…
Textbook
So far we have just looked at instruments that sense, control, and influence process variables. Transmitters,…
Textbook
Nearly every technical course teaches and tests students on definitions, basic concepts, and at least some…
Textbook
The three “elementary” particles of matter comprising all atoms are electrons, protons, and…
Textbook
Diagnostic ability is arguably the most difficult skill to develop within a student, and also the most…
Textbook
All substances are comprised of various elements in various combinations and proportions. Elements may thus be…
Textbook
Programmable logic controllers are essentially nothing more than special-purpose, industrial computers. As…
Textbook
Several different technologies exist for the conversion of fluid pressure into an electrical signal response.…
Textbook