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Valve Failure Mode

Textbook

An important design parameter of a control valve is the position it…

General Problem-solving Techniques

Textbook

A variety of problem-solving techniques have been presented for…

Digital Data Communication Theory

Textbook

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

Pipe and Pipe Fittings

Textbook

Pipe is a hollow structure designed to provide an enclosed pathway for…

Industrial Instrumentation Summary for Teachers

Textbook

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

Introduction to Protective Relaying

Textbook

Circuit breakers used in residential, commercial, and light industrial…

Common Educational Fallacies

Textbook

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

Numerical Integration

Textbook

As we have seen, the concept of integration is finding the…

Digital Multimeter (DMM) Tips and Tricks

Textbook

The digital multimeter (DMM) is quite possibly the most useful tool in…

Basic Feedback Control Principles

Textbook

Before we begin our discussion on process control, we must define a…

Control Valve Sizing

Textbook

When control valves operate between fully open and fully shut, they…

Error Corrections

Textbook

Abdelaziz, Ahmed (June 2014) Identified numerous typographical errors…

Metric Prefixes and Prefix Scale

Textbook

Flow Measurement in Open Channels

Textbook

Measuring the flow rate of liquid through an open channel is not…

FOUNDATION Fieldbus H1 Protocol Physical Layer

Textbook

Layer 1 of the OSI Reference Model is where we define the…

Energy in Chemical Reactions

Textbook

A chemical reaction resulting in a net release of energy is called…

References

Textbook

Lipták, Béla G. et al., Instrument Engineers’ Handbook – Process…

Directional Overcurrent (67) Protection

Textbook

While 50 and 51 (instantaneous and time overcurrent) relay functions…

Chemical Reactor Temperature Control Example

Textbook

Sometimes we encounter a diversity of instrument signal standards in…

Zero and Span Adjustments (Analog Instruments)

Textbook

The purpose of calibration is to ensure the input and output of an…

Analog to Digital Conversion and ADCs

Textbook

In order to provide an interface between the internal (digital) world…

Common Diagnostic Mistakes in Control Systems

Textbook

Volumes could be written about poor diagnostic technique. The…

Digital PID Algorithms

Textbook

Instrument technicians should not have to concern themselves over the…

Continuous Float Level Transmitters

Textbook

Perhaps the simplest form of solid or liquid level measurement is with…

What are Simple Machines?

Textbook

A machine in the broad sense of the word is any device designed to…

Digital Data Communication Theory

Textbook

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

PID Control Terminology

Textbook

PID control can be a confusing concept to understand. Here, a brief…

LRV and URV Settings, Digital Trim (Digital Transmitters)

Textbook

The advent of “smart” field instruments containing…

Limit, Selector, and Override Controls

Textbook

Another category of control strategies involves the use of signal…

Proper Care and Feeding of Pneumatic Instruments

Textbook

Perhaps the most important rule to obey when using pneumatic…

Transfer Function Analysis

Textbook

An extremely important topic in engineering is that of transfer…

Fluid Mechanics

Textbook

A fluid is any substance having the ability to flow: to freely change…

Design-based Fortifications

Textbook

A design-based fortification is one rooted in technical details of…

Relating 4 to 20 mA Signals to Instrument Variables

Textbook

A 4 to 20 mA current signal represents some signal along a 0 to 100…

Process/Instrument Suitability

Textbook

Every flow-measuring instrument exploits a physical principle to…

Legal Code

Textbook

Creative Commons Attribution 4.0 International Public License By…

Unit Conversions and Physical Constants

Textbook

Converting between disparate units of measurement is the bane of many…

Dimensional Analysis

Textbook

An interesting parallel to the “unity fraction” unit…

Functional Diagrams: the Flow of Information within a Control System

Textbook

A unique form of technical diagram for describing the abstract…

Thermistors and Resistance Temperature Detectors (RTDs)

Textbook

One of the simplest classes of temperature sensor is one where…