Creative Commons Attribution 4.0 International Public License By…
A proximity switch is one detecting the proximity (closeness) of some…
An exciting development in industrial instrumentation is the…
There are many process control applications in the industry where it…
The key to understanding how three-phase electric motors work is to…
An important legacy technology for all kinds of continuous measurement…
A very simple device used to measure pressure is the manometer: a…
As we have seen, feedforward control is a way to improve the stability…
“Radio” systems use electromagnetic fields to communicate…
In November of 2007 a new computer virus was submitted to a virus…
An important design parameter of a control valve is the position it…
Negative feedback systems, in general, tend to cause much confusion…
Current is the name we give to the motion of electric charges from a…
DC electric current signals may also be used to communicate process…
Coy, John J. et. al. (December 2012) Sampled graphic illustrations…
Once while working as an instrument technician in an aluminum foundry,…
Three-phase AC is the dominant mode of electric power generation and…
Earlier in this chapter you were shown a model of a nitrogen atom with…
pH is the measurement of the hydrogen ion activity in a liquid…
An extremely important topic in engineering is that of transfer…
A flow switch is one detecting the flow of some fluid through a pipe.…
Any two electrical conductors separated by an insulating medium…
pH is the measurement of the hydrogen ion activity in a liquid…
A unique form of technical diagram for describing the abstract…
Like so many other industrial data networks, FOUNDATION Fieldbus is an…
Non-dispersive analysis, while newer in discovery than dispersive…
A different strategy for controlling the flow of fluid is to insert a…
Any physical location in an industrial facility harboring the…
One of the most important accessories for any temperature-sensing…
Imagine a liquid-level control system for a vessel, where the position…
Diagnostic ability is arguably the most difficult skill to develop…
Capacitors store energy in electric fields, proportional to the square…
The Law of Mass Conservation states that matter can neither be created…
DC electric current signals may also be used to communicate process…
Perhaps the most basic and necessary protective relay function is…
The Law of Continuity for fluids states that the product of mass…
By definition, a source is a device delivering energy into a system,…
A level switch is one detecting the level of liquid or solid (granules…
Sample sizes of chemical substances are often measured in moles. One…
Light has long been used as a long-range signaling medium. While…
As defined previously, calibration means the comparison and adjustment…
