RTDs are completely passive sensing elements, requiring the application of an externally-sourced electric…
Textbook
Perhaps the most important rule to obey when using pneumatic instruments is to maintain clean and dry…
Textbook
Feedback Control System Components Before we begin our discussion on process control, we must define a few key…
Textbook
When I began teaching full-time in 1998, most of what I thought I understood about good teaching was actually…
Textbook
As discussed at the beginning of this chapter, instrumentation safety may be broadly divided into two…
Textbook
Every programmable logic controller must have some means of receiving and interpreting signals from real-world…
Textbook
A different strategy for controlling the flow of fluid is to insert a rotary element into the flow path.…
Textbook
An electromechanical relay is an electrical switch actuated by an electromagnet coil. As switching devices,…
Textbook
A very common form of on/off valve used for pneumatic and hydraulic systems alike is the solenoid valve. A…
Textbook
Linearity of Measurement Instruments The purpose of calibration is to ensure the input and output of an…
Textbook
Capacitive level instruments measure electrical capacitance of a conductive rod inserted vertically into a…
Textbook
Constructing PID control systems using discrete components is a fairly simple method involving operational…
Textbook
Tube, like pipe, is a hollow structure designed to provide an enclosed pathway for fluids to flow. In the case…
Textbook
As a general rule, high achievement only takes place in an atmosphere of high expectations. Sometimes these…
Textbook
A limit switch detects the physical motion of an object by direct contact with that object. An example of a…
Textbook
“Feedforward” is a rather under-used control strategy capable of managing a great many types of…
Textbook
A control strategy similar to ratio control is relation control. This is similar to ratio control in that a…
Textbook
In order for any PID controller to be practical, it must be able to do more than just implement the PID…
Textbook
Every flow-measuring instrument exploits a physical principle to measure the flow rate of fluid stream.…
Textbook
What is Calibration? To calibrate an instrument means to check and adjust (if necessary) its response so the…
Textbook
Finally, we arrive at the loop diagram (sometimes called a loop sheet) for the compressor surge control system…
Textbook
Facebook
Google
GitHub
Linkedin