“Radio” systems use electromagnetic fields to communicate…
A sliding-stem valve body is one where the moving parts slide with a…
To show a practical process example, let’s examine three…
Fieldbus devices require far more attention in their initial setup and…
Some analyzers measure the composition of a process stream by directly…
A quantitative PID tuning procedure is a step-by-step approach leading…
Mechanical pressure-sensing elements include the bellows, the…
An important performance parameter for transmitter instruments is…
“As to methods there may be a million and then some, but…
Fluid pressure exerts force on any surface area it contacts, as…
Phasors are to AC circuit quantities as polarity is to DC circuit…
Any conductor possesses a characteristic called inductance: the…
Imagine a major marathon race, where hundreds of runners gather in one…
As we have seen, the concept of integration is finding the…
As we have seen, feedforward control is a way to improve the stability…
Area refers to the size of two-dimensional surface. Volume refers to…
Constructing PID control systems using discrete components is a…
An electromechanical relay is an electrical switch actuated by an…
In some process applications, it is important that the control valve…
Earlier in this chapter you were shown a model of a nitrogen atom with…
When a high-energy photon strikes an atom, it may eject one of the…
