An on/off valve is the fluid equivalent of an electrical switch: a device that either allows unimpeded flow or…
Textbook
A great many chemical composition measurements may be made indirectly by means of electricity, if those…
Textbook
DC electric motors generate torque by a reaction between two magnetic fields: one field established by…
Textbook
A 4 to 20 mA current signal represents some signal along a 0 to 100 percent scale. Usually, this scale is…
Textbook
Perhaps the simplest form of solid or liquid level measurement is with a float: a device that rides on the…
Textbook
A pressure switch is one detecting the presence of fluid pressure. Pressure switches often use diaphragms or…
Textbook
Every flow-measuring instrument exploits a physical principle to measure the flow rate of fluid stream.…
Textbook
Temperature measurement devices may be classified into two broad types: contact and non-contact. Contact-type…
Textbook
A variety of technologies exist to measure the quantity of stored material in a vessel. For liquid…
Textbook
The electrical conductivity of liquids is an important analytical measurement in many industrial processes.…
Textbook
The term “grid” refers to the conductors and equipment interconnecting power sources to power…
Textbook
Many traditional flowmeter technologies respond to the volumetric flow rate of the moving fluid.…
Textbook
Classical mechanics (often called Newtonian mechanics in honor of Isaac Newton) deal with forces and motions…
Textbook
A level switch is one detecting the level of liquid or solid (granules or powder) in a vessel. Level switches…
Textbook
A control strategy similar to ratio control is relation control. This is similar to ratio control in that a…
Textbook
An variable-area flowmeter is one where the fluid must pass through a restriction whose area increases with…
Textbook
Earlier in this chapter you were shown a model of a nitrogen atom with a dense nucleus (comprised of protons…
Textbook
Imagine a liquid-level control system for a vessel, where the position of a level-sensing float directly sets…
Textbook
In the United States, the most common language used to program PLCs is Ladder Diagram (LD), also known as…
Textbook
All substances are comprised of various elements in various combinations and proportions. Elements may thus be…
Textbook
Facebook
Google
GitHub
Linkedin