Once while working as an instrument technician in an aluminum foundry, a mechanic asked me what it was that I…
Textbook
“Feedforward” is a rather under-used control strategy capable of managing a great many types of…
Textbook
Nearly every technical course teaches and tests students on definitions, basic concepts, and at least some…
Textbook
At the root of successful system diagnosis is a rigorous adherence to scientific reasoning. There exists no…
Textbook
The majority of flowmeter technologies operate on the principle of interpreting fluid flow based on the…
Textbook
A damper (otherwise known as a louvre) is a multi-element flow control device generally used to throttle large…
Textbook
A great many precision instruments use the principle of balance to measure some quantity. Perhaps the simplest…
Textbook
A special type flowmeter suited for powdered or granular solids is the weighfeeder. One of the most common…
Textbook
The following animation shows a rotating phasor in three-dimensional form. The phasor rotates in a complex…
Textbook
A proximity switch is one detecting the proximity (closeness) of some object. By definition, these switches…
Textbook
The most popular form of signal transmission used in modern industrial instrumentation systems (as of this…
Textbook
A hand switch is exactly what the name implies: an electrical switch actuated by a person’s hand motion.…
Textbook
Process measurements are often of an analog nature: the temperature of a furnace, the rate of fluid flow…
Textbook
A simple control system drawn in block diagram form looks like this: Information from the measuring device…
Textbook
Regardless of valve type, all stem-actuated control valves require some form of seal allowing motion of the…
Textbook
To summarize some of the key points and concepts for teaching: Do not waste class time transmitting facts to…
Textbook
Shown here is a partial listing of principles applied in the subject matter of this chapter, given for the…
Textbook
Valves can experience a number of problems, most of them either preventable or repairable. These problems can…
Textbook
Electrical Resistance Resistance (\(R\)) is the dissipative opposition to an electric current, analogous to…
Textbook
When I began teaching full-time in 1998, most of what I thought I understood about good teaching was actually…
Textbook
Facebook
Google
GitHub
Linkedin