Multiple accessories exist for pressure-sensing devices to function…
Disturbances in the liquid tend to complicate liquid level…
Virtually any mass above absolute zero temperature emits…
One of the most important accessories for any temperature-sensing…
The fundamental principle of electromagnetism is that an electric…
It is possible to convey electrical power and communicate analog…
Layer 1 of the OSI Reference Model is where we define the…
Control valves are supposed to deliver reliable, repeatable control of…
To review, voltage is the measure of potential energy available to…
Perhaps the most basic and necessary protective relay function is…
Electromechanical relays may be connected together to perform logic…
A unique form of technical diagram for describing the abstract…
Light has long been used as a long-range signaling medium. While…
pH is the measurement of the hydrogen ion activity in a liquid…
This section shows some of the many instrument symbols found in…
An important performance parameter for transmitter instruments is…
In reliability engineering, it is important to be able to quantity the…
As discussed at the beginning of this chapter, instrumentation safety…
Once while working as an instrument technician in an aluminum foundry,…
There are many process control applications in the industry where it…
There is much to be said for neatness of assembly in electrical signal…
The transformer is one of the most important components in all of AC…
In the United States, the ANSI and IEEE organizations have…
Regulating the electric power sent to an electric motor is a task…
Control valves are supposed to deliver reliable, repeatable control of…
Current is the name we give to the motion of electric charges from a…
Fieldbus devices require far more attention in their initial setup and…
Phasors are to AC circuit quantities as polarity is to DC circuit…
A vertical column of fluid generates a pressure at the bottom of the…
Electromechanical relays may be connected together to perform logic…
In addition to Ohm’s Law, we have a set of rules describing how…
There are many process control applications in the industry where it…
Data-processing modules within FF systems are known as function…
The advent of “smart” field instruments containing…
Many traditional flowmeter technologies respond to the volumetric flow…
Few areas of mathematics are as powerfully useful in describing and…
Perhaps the most important rule to obey when using pneumatic…
Several different technologies exist for the conversion of fluid…
One of the most common, and most useful, pressure measuring…
Any power grid large enough to meet the demand of an entire nation…
Most people reading this book have likely had the experience of…
Control strategies such as cascade, ratio, feedforward, and those…
Programmable logic controllers are essentially nothing more than…
Process measurements are often of an analog nature: the temperature of…
