Perhaps the simplest form of solid or liquid level measurement is with…
Disconnect Switches Disconnects are switches designed to isolate…
Most pneumatic instruments use a simple but highly sensitive mechanism…
Some problem-solving techniques are unique to quantitative problems,…
Perhaps the most important rule of controller tuning is to know the…
Fluid pressure exerts force on any surface area it contacts, as…
A very common form of on/off valve used for pneumatic and hydraulic…
As we have seen, the concept of integration is finding the…
An important design parameter of a control valve is the position it…
Abdelaziz, Ahmed (June 2014) Identified numerous typographical errors…
There are many process control applications in the industry where it…
Valve actuators provide force to move control valve trim. For precise…
The purpose of a control valve actuator is to provide the motive force…
A damper (otherwise known as a louvre) is a multi-element flow control…
One of the most common, and most useful, pressure measuring…
Given the ability of pressurized fluids to transmit force over long…
Self-balancing mechanisms consisting solely of a baffle/nozzle…
Perhaps the most important rule to obey when using pneumatic…
As previously defined, calibration refers to the checking and…
In some process applications, it is important that the control valve…
A form of protection against faults on long-distance power lines is…
To summarize some of the key points and concepts for teaching: Do not…
Abdelaziz, Ahmed (June 2014) Identified numerous typographical errors…
All substances are comprised of various elements in various…
One very convenient feature of waves is that their properties are…
Area refers to the size of two-dimensional surface. Volume refers to…
A very common method for directly controlling low flow rates of fluids…
Perhaps the most valuable skill an instrument technician can possess…
A great many precision instruments use the principle of balance to…
Steam boilers are very common in industry, principally because steam…
“Polyphase” means “many phases,” describing a…
A very simple device used to measure pressure is the manometer: a…
A wise PLC programmer once told me that the first thing any aspiring…
To review, voltage is the measure of potential energy available to…
This section does not describe a particular type of flowmeter, but…
(Will be addressed in future versions of this book)
A variety of technologies exist to measure the quantity of stored…
The following photograph shows a large air blower in a wastewater…
There are multiple motives for compromising the security of an…
Two extremely important principles in electric circuits were codified…
