Spitzer and Boyes, LLC Website

DAVID W. SPITZER'S E-ZINE

TECHNICAL AND MARKETING SERVICES
FOR INSTRUMENTATION SUPPLIERS AND END-USERS

This issue sponsored by Spitzer and Boyes, LLC

February 2013

Capacitance Level Sensors

Capacitance level sensors have many sizes, lengths, shapes, and electrical properties to measure the level of the many varied materials that are located in vessels with widely varying geometry. Sanitary sensors are also available. click for more...

Part I: The Swimming Pool Case

Work often puts people in unexpected places. Some years ago, a lawyer contacted me regarding a case where his client allegedly damaged her lungs after allegedly inhaling chlorine gas at a hotel swimming pool. I was not surprised to be contacted by a lawyer (lawyers have attended my Industrial Flow Measurement seminar), but I was surprised to be contacted by a lawyer representing a client who was injured in a seemingly non-industrial location. click for more...

Fluid Density's Effect on a DP Flow Control Loop

The flow control loop maintains the output of the differential-pressure transmitter constant, so ΔP remains constant. Fluid density is in the denominator and within the square root, so increasing fluid density will decrease the flow measurement as the inverse of the square root of fluid density. 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 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.