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Safety Gas Analyzers

Textbook

Process analyzers measure the concentration of specific substances for…

Classified Areas and Electrical Safety Measures

Textbook

Any physical location in an industrial facility harboring the…

Safety Instrumented Functions and Systems

Textbook

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

Flow Measurement in Open Channels

Textbook

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

Digital Data Communication Theory

Textbook

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

Mechanical Pressure Elements

Textbook

Mechanical pressure-sensing elements include the bellows, the…

On/off Control (Bang-bang Control)

Textbook

Once while working as an instrument technician in an aluminum foundry,…

Positive Displacement Flowmeters

Textbook

A positive displacement flowmeter is a cyclic mechanism built to pass…

Control Valve Characterization

Textbook

Control valves are supposed to deliver reliable, repeatable control of…

Numerical Integration

Textbook

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

Common Diagnostic Mistakes in Control Systems

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Volumes could be written about poor diagnostic technique. The…

Atomic Theory and Chemical Symbols

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The three “elementary” particles of matter comprising all…

Pressure Sensor Accessories

Textbook

Multiple accessories exist for pressure-sensing devices to function…

Transformer Basics and Principles of Operation

Textbook

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

Proximity Switches

Textbook

A proximity switch is one detecting the proximity (closeness) of some…

Electrical Signal and Control Wiring

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There is much to be said for neatness of assembly in electrical signal…

Level Sensor Accessories

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Disturbances in the liquid tend to complicate liquid level…

Advantages and Disadvantages of Pneumatic Instruments

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The disadvantages of pneumatic instruments are painfully evident to…

Introduction to Protective Relaying

Textbook

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

Energy in Chemical Reactions

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

Radio-energy Pulse in Guided-wave Radar Level Measurement

Textbook

The following animation shows how a radio-energy pulse travels down…

LRV and URV Settings, Digital Trim (Digital Transmitters)

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The advent of “smart” field instruments containing…

Interconnected Generators

Textbook

Any power grid large enough to meet the demand of an entire nation…