Process measurements are often of an analog nature: the temperature of a furnace, the rate of fluid flow…
Textbook
Filled-bulb systems exploit the principle of fluid expansion to measure temperature. If a fluid is enclosed in…
Textbook
A number of different sensors used in instrumentation generate DC voltage signals proportional to the process…
Textbook
A sliding-stem valve body is one where the moving parts slide with a linear motion. Some examples of…
Textbook
Some of the simplest types of digital communication networks found in industry are defined by the EIA…
Textbook
This animation shows the basic operation of a gas chromatograph, showing the separation of different molecular…
Textbook
Perhaps the most important rule of controller tuning is to know the process before attempting to adjust the…
Textbook
To summarize some of the key points and concepts for teaching: Do not waste class time transmitting facts to…
Textbook
A very common method for directly controlling low flow rates of fluids is to use a device known as a metering…
Textbook
Circuit breakers used in residential, commercial, and light industrial service are self-tripping devices: they…
Textbook
In November of 2007 a new computer virus was submitted to a virus scanning service. The purpose of this new…
Textbook
A wise PLC programmer once told me that the first thing any aspiring programmer should learn about the PLC…
Textbook
Negative feedback systems, in general, tend to cause confusion for those first learning their fundamental…
Textbook
A control strategy similar to ratio control is relation control. This is similar to ratio control in that a…
Textbook
A bridge circuit is basically a pair of voltage dividers where the circuit output is taken as the difference…
Textbook
A variety of technologies exist to measure the quantity of stored material in a vessel. For liquid…
Textbook
Most of these formulae appear in molecular chemical form rather than structural form. For example, ethanol…
Textbook
Some problem-solving techniques are unique to quantitative problems, involving mathematical calculations. In…
Textbook
Every programmable logic controller must have some means of receiving and interpreting signals from real-world…
Textbook
Perhaps the most valuable skill an instrument technician can possess is the ability to efficiently diagnose…
Textbook
Virtually any mass above absolute zero temperature emits electromagnetic radiation (photons, or light) as a…
Textbook
Facebook
Google
GitHub
Linkedin