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Feedforward with Dynamic Compensation

Textbook

As we have seen, feedforward control is a way to improve the stability…

Filled-bulb Temperature Sensors

Textbook

Filled-bulb systems exploit the principle of fluid expansion to…

Instrument Turndown (Rangedown)

Textbook

An important performance parameter for transmitter instruments is…

Valve Packing

Textbook

Regardless of valve type, all stem-actuated control valves require…

Process Flow Diagrams

Textbook

To show a practical process example, let’s examine three…

Common Educational Fallacies

Textbook

When I began teaching full-time in 1998, most of what I thought I…

Split-range Control

Textbook

There are many process control applications in the industry where it…

Analyzer Sample Systems

Textbook

Some analyzers measure the composition of a process stream by directly…

Digital Data Communication Theory

Textbook

One of the great benefits of digital technology is the ability to…

Auxiliary and Lockout (86) Relays

Textbook

An important type of “accessory” relay, especially for…

Basics of Bridge Circuits

Textbook

A bridge circuit is basically a pair of voltage dividers where the…

Metering Pumps

Textbook

A very common method for directly controlling low flow rates of fluids…

Using Manometers for Measuring Pressure

Textbook

A very simple device used to measure pressure is the manometer: a…

Flow Measurement from Differential Pressure

Textbook

Take for instance the problem of measuring fluid flow through a pipe.…

Sequential Function Chart (SFC) Programming

Textbook

(Will be addressed in future versions of this book)

Examples of PLC Systems

Textbook

Programmable logic controllers are essentially nothing more than…

Different PID Equations

Textbook

For better or worse, there are no fewer than three different forms of…

Analysis of Practical Pneumatic Instruments

Textbook

To better understand the design and operation of self-balancing…

Displacement and Displacer Level Instrumentation

Textbook

Displacer level instruments exploit Archimedes’ Principle to…

Industrial Instrumentation Summary for Teachers

Textbook

To summarize some of the key points and concepts for teaching: Do not…