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DAVID W. SPITZER'S E-ZINE

TECHNICAL AND MARKETING SERVICES
FOR INSTRUMENTATION SUPPLIERS AND END-USERS

This issue sponsored by Spitzer and Boyes, LLC

June 2015

Pump Station Control: On/Off Control Strategy (Part 2)

The level switch signals can also be generated from a signal from a level transmitter by using signal trip modules or software in the sequencer. The significant advantage of this approach is that it provides additional level measurement information beyond the presence or lack of level. I click for more...

Part IV: The Case of the Cold Control Valve

The reactor scram (shutdown) system was activated at about 2 p.m. on a warm June day because the liquid ammonia flowmeter feeding the reactor measured low flow. The flowmeter appeared to be properly installed, and its flow control valve located downstream was caked in ice. click for more...

Which Flowmeters Measure Inferentially?

Positive-displacement flowmeters, such as piston and oval gear flowmeters, constantly entrap fluid to measure the actual volume. Some flowmeters measure velocity, such as magnetic, turbine and vortex-shedding flowmeters. Coriolis and thermal flowmeters measure mass flow. click for more...

ABOUT SPITZER AND BOYES, LLC

In addition to over 35 years of experience as an instrument user, consultant, and expert witness, David W Spitzer has written over 10 books and 250 articles about flow measurement, level measurement, instrumentation, and process control. David (with Walt Boyes) is the author of seven Consumer Guides to various industrial flow and level technologies. David teaches his flow measurement seminars in both English and Portuguese.

Spitzer and Boyes, LLC publishes the Industrial Automation INSIDER that is an independent subscription newsletter for industrial automation and process control system users, installers and suppliers world-wide, giving a monthly update on the continuing evolution, development and convergence of automation technologies.

Spitzer and Boyes, LLC provides engineering, technical writing, training seminars, strategic marketing consulting, distribution consulting, and expert witness services worldwide, and can be contacted at +1.845.623.1830 or www.spitzerandboyes.com.