AC induction motors are based on the principle of a rotating magnetic…
Programmable logic controllers are essentially nothing more than…
Virtually any mass above absolute zero temperature emits…
The following animation shows a rotating phasor in three-dimensional…
One of the simplest classes of temperature sensor is one where…
Lipták, Béla G. et al., Instrument Engineers’ Handbook – Process…
Feedback obtained from industrial users of FF reveal a common pattern:…
Solids tend to expand when heated. The amount that a solid sample will…
Any power grid large enough to meet the demand of an entire nation…
First, let us review some of the properties of differentials and…
A Safety Instrumented Function, or SIF, is one or more components…
A sliding-stem valve body is one where the moving parts slide with a…
The next level of detail is the Process and Instrument Diagram, or…
A chemical reaction resulting in a net release of energy is called…
A different strategy for controlling the flow of fluid is to insert a…
Weight-based level instruments sense process level in a vessel by…
As we have seen, feedforward control is a way to improve the stability…
Recall that an exothermic chemical reaction is one that releases a net…
“Radio” systems use electromagnetic fields to communicate…
Control valves are supposed to deliver reliable, repeatable control of…
