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National Institute of Standards and Technology (NIST) Traceability

Textbook

As defined previously, calibration means the comparison and adjustment…

FOUNDATION Fieldbus H1 Protocol Data Link Layer

Textbook

Like so many other industrial data networks, FOUNDATION Fieldbus is an…

Mechanical Vibration Switches

Textbook

A much simpler alternative to continuous vibration sensors…

Ratio Control

Textbook

Most people reading this book have likely had the experience of…

VSD and VFD Motor Drive Features

Textbook

Modern DC and AC motor drives provide features useful when using…

Fundamental Principles of Industrial Instrumentation

Textbook

Shown here is a partial listing of principles applied in the subject…

P, I, and D Responses Graphed

Textbook

A very helpful method for understanding the operation of proportional,…

Polyphase AC Power

Textbook

“Polyphase” means “many phases,” describing a…

Instrument Turndown (Rangedown)

Textbook

An important performance parameter for transmitter instruments is…

Transformer Basics and Principles of Operation

Textbook

The transformer is one of the most important components in all of AC…

Periodic Table of the Elements

Textbook

All substances are comprised of various elements in various…

New Content

Textbook

Coy, John J. et. al. (December 2012) Sampled graphic illustrations…

Flow Measurement in Open Channels

Textbook

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

Applications of Spectroscopy for Analytical Measurement

Textbook

Much of our knowledge about atomic structure comes from experimental…

Insertion Flowmeters

Textbook

This section does not describe a particular type of flowmeter, but…

Relay Circuits and Ladder Diagrams

Textbook

Electromechanical relays may be connected together to perform logic…

Flow Measurement from Differential Pressure

Textbook

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

Metric Prefixes and Prefix Scale

Textbook

Classified Areas and Electrical Safety Measures

Textbook

Any physical location in an industrial facility harboring the…

Material Volume Measurement

Textbook

A variety of technologies exist to measure the quantity of stored…

National Institute of Standards and Technology (NIST) Traceability

Textbook

As defined previously, calibration means the comparison and adjustment…

Supervisory Control

Textbook

In a manually-controlled process, a human operator directly actuates…

Vibration Physics

Textbook

One very convenient feature of waves is that their properties are…

Practical PID Controller Features

Textbook

In order for any PID controller to be practical, it must be able to do…

Unit Conversions and Physical Constants

Textbook

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

Chemical Reactor Temperature Control Example

Textbook

Sometimes we encounter a diversity of instrument signal standards in…

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…

Input/Output (I/O) capabilities of PLCs

Textbook

Every programmable logic controller must have some means of receiving…

Temperature Sensor Accessories

Textbook

One of the most important accessories for any temperature-sensing…

Safety Gas Analyzers

Textbook

Process analyzers measure the concentration of specific substances for…

Proportional-only Control

Textbook

Imagine a liquid-level control system for a vessel, where the position…

Pneumatic Actuator Response

Textbook

A limitation inherent to pneumatic valve actuators is the amount of…

Analyzer Sample Systems

Textbook

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

Level Sensor Accessories

Textbook

Disturbances in the liquid tend to complicate liquid level…

Basics of Electrical Current

Textbook

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

Temperature Switches

Textbook

A temperature switch is one detecting the temperature of some…

Phasor Analysis of Transformer Circuits

Textbook

Three-phase AC is the dominant mode of electric power generation and…

Policy-based Fortifications

Textbook

These fortifications focus on human behavior rather than system design…

Scientific System diagnosis and Scientific Reasoning

Textbook

At the root of successful system diagnosis is a rigorous adherence to…

Auxiliary and Lockout (86) Relays

Textbook

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