A technological advance introduced in the late 1980’s was HART,…
Those familiar with industrial instrumentation will find much within…
Another category of control strategies involves the use of signal…
While the term “probability” may evoke images of…
Multiple accessories exist for pressure-sensing devices to function…
These fortifications focus on human behavior rather than system design…
Learning PLC programming is a very important skill. If your job…
Light has long been used as a long-range signaling medium. While…
Modern DC and AC motor drives provide features useful when using…
As discussed at the beginning of this chapter, instrumentation safety…
A wise PLC programmer once told me that the first thing any aspiring…
Labwork is an essential part of any science-based curriculum. Here,…
Creative Commons Attribution 4.0 International Public License By…
The purpose of a control valve actuator is to provide the motive force…
One of the most important accessories for any temperature-sensing…
Data-processing modules within FF systems are known as function…
An electric motor is often used as a discrete control element in a…
(Will be addressed in future versions of this book)
An exciting development in industrial instrumentation is the…
Perhaps the most confusing aspect of discrete sensors is the…
Some analyzers measure the composition of a process stream by directly…
DC electric motors generate torque by a reaction between two magnetic…
An variable-area flowmeter is one where the fluid must pass through a…
Any conductor possesses a characteristic called inductance: the…
It is possible to convey electrical power and communicate analog…
Area refers to the size of two-dimensional surface. Volume refers to…
The following animation shows how a radio-energy pulse travels down…
As described earlier in this chapter, calibration refers to the…
A bridge circuit is basically a pair of voltage dividers where the…
As we have seen, the concept of integration is finding the…
Given the ability of pressurized fluids to transmit force over long…
Measuring the flow rate of liquid through an open channel is not…
Process analyzers measure the concentration of specific substances for…
Perhaps the most important rule of controller tuning is to know the…
While the term “probability” may evoke images of…
I remember first learning about the world-wide Internet, and wondering…
The advent of “smart” field instruments containing…
A special type flowmeter suited for powdered or granular solids is the…
Since we often use electricity to convey energy from one location to…
A level switch is one detecting the level of liquid or solid (granules…
