Latest Distributed I/O Education

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Memory Maps and I/O Addressing

Textbook

A wise PLC programmer once told me that the first thing any aspiring…

The HART Digital/Analog Hybrid Standard

Textbook

A technological advance introduced in the late 1980’s was HART,…

Teaching Technical Practices (Labwork)

Textbook

Labwork is an essential part of any science-based curriculum. Here,…

Motives for Compromising the Security of an Industrial Control System

Textbook

There are multiple motives for compromising the security of an…

Vibration Monitoring Hardware

Textbook

The following photograph shows a large air blower in a wastewater…

LRV and URV Settings, Digital Trim (Digital Transmitters)

Textbook

The advent of “smart” field instruments containing…

Introduction to Power System Automation

Textbook

Those familiar with industrial instrumentation will find much within…

Logic Programming in PLCs

Textbook

Although it seems each model of PLC has its own idiosyncratic standard…

Input/Output (I/O) Capabilities of PLCs

Textbook

Every programmable logic controller must have some means of receiving…

Functional Diagrams: the Flow of Information within a Control System

Textbook

A unique form of technical diagram for describing the abstract…

Ladder Diagram (LD) Programming Contacts and Coils

Textbook

In the United States, the most common language used to program PLCs is…

Policy-based Fortifications

Textbook

These fortifications focus on human behavior rather than system design…

Legal Code

Textbook

Creative Commons Attribution 4.0 International Public License By…

Digital Data Communication Theory

Textbook

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

Fiber Optic Data Communication

Textbook

Light has long been used as a long-range signaling medium. While…

Examples of PLC Systems

Textbook

Programmable logic controllers are essentially nothing more than…

WirelessHART Radio Communication Standard

Textbook

An exciting development in industrial instrumentation is the…

Differential (87) Current Protection

Textbook

One of the fundamental laws of electric circuits is Kirchhoff’s…

Analog to Digital Conversion and ADCs

Textbook

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

Safety Instrumented Functions and Systems

Textbook

A Safety Instrumented Function, or SIF, is one or more components…

Gas Filter Correlation (GFC) Spectroscopy

Textbook

Using filter cells to eliminate wavelengths associated with…

Basics of Electrical Current

Textbook

Current is the name we give to the motion of electric charges from a…

Use of Line Reactors

Textbook

Regulating the electric power sent to an electric motor is a task…

Chromatography: Methods, Detectors and Species

Textbook

Imagine a major marathon race, where hundreds of runners gather in one…

The HART Digital/Analog Hybrid Standard

Textbook

A technological advance introduced in the late 1980’s was HART,…

Instrument Identification Tags

Textbook

Up until this point, we have explored various types of instrumentation…

Introduction to Calculus

Textbook

Few areas of mathematics are as powerfully useful in describing and…

Teaching Diagnostic Principles and Practices

Textbook

Diagnostic ability is arguably the most difficult skill to develop…

Sliding-stem Valves

Textbook

A sliding-stem valve body is one where the moving parts slide with a…

Flow Measurement in Open Channels

Textbook

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

Variable-area Flowmeters

Textbook

An variable-area flowmeter is one where the fluid must pass through a…

Fluid Power Systems

Textbook

Given the ability of pressurized fluids to transmit force over long…

Heuristic PID Tuning Procedures

Textbook

In contrast to quantitative tuning procedures where definite numerical…

Relation Control

Textbook

A control strategy similar to ratio control is relation control. This…

P, I, and D Responses Graphed

Textbook

Visualizing the actions of P, I, and D tuning parameters using graphs…

Problem-solving by Simplification

Textbook

A whole class of problem-solving techniques focuses on altering the…

FOUNDATION Fieldbus Design Philosophy

Textbook

To understand just how different FOUNDATION Fieldbus is from other…

Comparison of Op-Amp Circuits With Analogous Pneumatic Mechanisms

Textbook

Self-balancing pneumatic instrument mechanisms are very similar to…

Metering Pumps

Textbook

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

Functional Diagrams: the Flow of Information within a Control System

Textbook

A unique form of technical diagram for describing the abstract…