Process Control

Below you will find white papers on topics involving process control and automation.

Echoline Low Pressure Monitor and XHP Series High Purity Transducers

Echoline Low Pressure Monitor was developed for semiconductor manufacturers to monitor and balance gas exhaust systems, alert plant engineers to problems, and automate adjustment of high and low trip points before and after system maintenance. The XHP Transducer is designed for accurate, reliable sensing of process gases.

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Intrinsically Safe Submersible Pressure Transmitter

WIKA's intrinsically safe submersible pressure transmitter model IL-10 has been designed for the highest requirements of level measurement. Owing to their high accuracy, reliability, and their excellent media resistance, it is the ideal solution for almost all level measurements in hazardous areas.

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Pharmaceutical and Biotech Solutions from StoneL

StoneL provides solutions that help reduce installation costs through easy setup, faster commissioning, and enhanced valve identification. Bright electronic indication combined with optional remote wireless access provides enhanced risk management and improved safety.

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W600 Controllers: Take Control Now and Connect with the Best!

Walchem's W600 series controllers provide reliable, flexible, and powerful control for your water treatment program. The large touchscreen display with icon based programming makes setup easy and the universal sensor input provides extraordinary flexibility; the same controller can be used with almost any type of sensor needed.

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Jamesbury Wafer-Sphere? Butterfly Valve Compared to Rubber Lined Butterfly Valve

Submitted by Don Wolff

The Jamesbury high-performance valve is a heartier concept than the rubber-lined version. The term 'high performance' when considering the butterfly valve means the valve will take full ANSI pressure ratings, shuts off 'bubble tight', has higher temperature ratings, and, through the use of design and materials, has a much higher cycle life (extending into the millions of cycles without failure or leakage).

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Introduction to Pressure Part II: Velocity, Flow Rate and Reaction Force

Submitted by Russ Rochambeau, Engineering Manager, IFPS Hydraulic Specialist

In order to determine the Flow Rate represented as Q, we must define both the volume V and the point in time it is flowing past represented by t, or Q = V/t.  Additionally, Flow rate and velocity are related by the equation Q = Av where A is the cross-sectional area of flow and v is its average velocity.

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Control Valve Flow Characteristics

Submitted by Jon Monsen, Ph.D.

Selecting a valve with the correct flow characteristic (the relationship between valve opening and flow capacity) can be as important as the selection of the valve size.

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