Sometimes we encounter a diversity of instrument signal standards in…
Every flow-measuring instrument exploits a physical principle to…
Temperature measurement devices may be classified into two broad…
“As to methods there may be a million and then some, but…
Earlier in this chapter you were shown a model of a nitrogen atom with…
Weight-based level instruments sense process level in a vessel by…
Perhaps the most valuable skill an instrument technician can possess…
Any physical location in an industrial facility harboring the…
There is much to be said for neatness of assembly in electrical signal…
Nearly every technical course teaches and tests students on…
A form of protection against faults on long-distance power lines is…
Capacitors store energy in electric fields, proportional to the square…
The term “grid” refers to the conductors and equipment…
Measuring the flow rate of liquid through an open channel is not…
I remember first learning about the world-wide Internet, and wondering…
A chemical reaction resulting in a net release of energy is called…
Perhaps the most basic and necessary protective relay function is…
An electromechanical relay is an electrical switch actuated by an…
A vertical column of fluid generates a pressure at the bottom of the…
Most people reading this book have likely had the experience of…
“As to methods there may be a million and then some, but…
The purpose of a control valve actuator is to provide the motive force…
A positive displacement flowmeter is a cyclic mechanism built to pass…
(Will be addressed in future versions of this book)
An interesting parallel to the “unity fraction” unit…
Temperature measurement devices may be classified into two broad…
Control valves are supposed to deliver reliable, repeatable control of…
In a manually-controlled process, a human operator directly actuates…
Self-balancing pneumatic instrument mechanisms are very similar to…
An variable-area flowmeter is one where the fluid must pass through a…
A Safety Instrumented Function, or SIF, is one or more components…
A fluid is any substance having the ability to flow: to freely change…
At the next OSI Reference Model layer (layer 4) is a set of protocols…
Capacitive level instruments measure electrical capacitance of a…
Perhaps the most important rule to obey when using pneumatic…
The dispersion of visible light into its constituent colors goes all…
Volumes could be written about poor diagnostic technique. The…
Imagine a liquid-level control system for a vessel, where the position…
Nearly every technical course teaches and tests students on…
One of the marks of a successful problem-solver is a habit of applying…
