Multiple accessories exist for pressure-sensing devices to function optimally in challenging process…
Textbook
As previously defined, calibration refers to the checking and adjustment of an instrument so that its output…
Textbook
A fluid is any substance having the ability to flow: to freely change shape and move under the influence of a…
Textbook
Up until this point, we have explored various types of instrumentation diagram, each one making reference to…
Textbook
Disconnect Switches Disconnects are switches designed to isolate sections of a power system in case of damage…
Textbook
As we have seen, the concept of integration is finding the accumulation of one variable multiplied by another…
Textbook
As discussed at the beginning of this chapter, instrumentation safety may be broadly divided into two…
Textbook
The purpose of a control valve actuator is to provide the motive force to operate a valve mechanism. Both…
Textbook
The following collection of photographs chronicles the complete disassembly of a Fisher E-body globe valve…
Textbook
Another category of control strategies involves the use of signal relays or function blocks with the ability…
Textbook
A different strategy for controlling the flow of fluid is to insert a rotary element into the flow path.…
Textbook
Those familiar with industrial instrumentation will find much within the electric power industry remarkably…
Textbook
Given the ability of pressurized fluids to transmit force over long distances, it is not surprising that many…
Textbook
Tube, like pipe, is a hollow structure designed to provide an enclosed pathway for fluids to flow. In the case…
Textbook
Regardless of valve type, all stem-actuated control valves require some form of seal allowing motion of the…
Textbook
The final step in treating wastewater before releasing it into the natural environment is to kill any harmful…
Textbook
Current is the name we give to the motion of electric charges from a point of high potential to a point of low…
Textbook
A pneumatic controller receives a process variable (PV) signal as a variable air pressure, compares that…
Textbook
Perhaps the most important rule to obey when using pneumatic instruments is to maintain clean and dry…
Textbook
A simple control system drawn in block diagram form looks like this: Information from the measuring device…
Textbook
Finally, we arrive at the loop diagram (sometimes called a loop sheet) for the compressor surge control system…
Textbook
Most of these formulae appear in molecular chemical form rather than structural form. For example, ethanol…
Textbook
Sensors used to measure vibration come in three basic types: displacement, velocity, and acceleration.…
Textbook
Textbook
In reliability engineering, it is important to be able to quantity the reliability (or conversely, the…
Textbook
Solids tend to expand when heated. The amount that a solid sample will expand with increased temperature…
Textbook
Any physical location in an industrial facility harboring the potential of explosion due to the presence of…
Textbook
Sample sizes of chemical substances are often measured in moles. One mole of a substance is defined as a…
Textbook
A sliding-stem valve body is one where the moving parts slide with a linear motion. Some examples of…
Textbook
Learning from reading printed text is a kind of problem-solving activity it is own right. The problem is how…
Textbook
As previously defined, calibration refers to the checking and adjustment of an instrument so that its output…
Textbook
In contrast to quantitative tuning procedures where definite numerical values for P, I, and D controller…
Textbook
The very purpose of physics is to quantitatively describe and explain the physical world in as few terms as…
Textbook
Feedback Control System Components Before we begin our discussion on process control, we must define a few key…
Textbook
Impedance in a series circuit is the orthogonal sum of resistance and reactance: \[Z = \sqrt{R^2 + (X_L -…
Textbook
A special type flowmeter suited for powdered or granular solids is the weighfeeder. One of the most common…
Textbook
One of the great benefits of digital technology is the ability to communicate vast amounts of information over…
Textbook
A positive displacement flowmeter is a cyclic mechanism built to pass a fixed volume of fluid through with…
Textbook
“As to methods there may be a million and then some, but principles are few. The man who grasps…
Textbook
In November of 2007 a new computer virus was submitted to a virus scanning service. The purpose of this new…
Textbook
Virtually any mass above absolute zero temperature emits electromagnetic radiation (photons, or light) as a…
Textbook
Facebook
Google
GitHub
Linkedin