Latest Environments and Hazards Education

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Safety Gas Analyzers

Textbook

Process analyzers measure the concentration of specific substances for…

Safety Instrumented Functions and Systems

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

Classified Areas and Electrical Safety Measures

Textbook

Any physical location in an industrial facility harboring the…

On/off Electric Motor Control Circuits

Textbook

An electric motor is often used as a discrete control element in a…

Pneumatic Sensing Elements

Textbook

Most pneumatic instruments use a simple but highly sensitive mechanism…

LRV and URV Settings, Digital Trim (Digital Transmitters)

Textbook

The advent of “smart” field instruments containing…

Pilot Valves and Pneumatic Amplifying Relays

Textbook

Self-balancing mechanisms consisting solely of a baffle/nozzle…

Transmission Control Protocol (TCP) and User Datagram Protocol (UDP)

Textbook

At the next OSI Reference Model layer (layer 4) is a set of protocols…

Interconnected Generators

Textbook

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

Feedforward with Dynamic Compensation

Textbook

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

Classified Areas and Electrical Safety Measures

Textbook

Any physical location in an industrial facility harboring the…

What is Internet Protocol (IP)?

Textbook

I remember first learning about the world-wide Internet, and wondering…

Calibration Procedures in Linear, Non-Linear and Discrete Instruments

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As described earlier in this chapter, calibration refers to the…

Ultrasonic (Sound) Echo Level Measurement

Textbook

A completely different way of measuring liquid level in vessels is to…

Positive Displacement Flowmeters

Textbook

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

Safety Gas Analyzers

Textbook

Process analyzers measure the concentration of specific substances for…

Wastewater Disinfection Example

Textbook

The final step in treating wastewater before releasing it into the…

Electrical Sensors: Potential Transformers (PTs) and Current Transformers (CTs)

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The two “process variables” we rely on most heavily in the…

Temperature Sensor Accessories

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

Insertion Flowmeters

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

On/off Control (Bang-bang Control)

Textbook

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

Basics of Electrical Current

Textbook

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

Dispersive Spectroscopy

Textbook

The dispersion of visible light into its constituent colors goes all…