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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

October 2019

Positive Displacement Flowmeters: The Big Four (Part 2)

Third, the meter depends for its accuracy on all of the chambers in the meter being filled completely with fluid. That is the "positive displacement" the meter is named for. In this application, the meter's chambers may retain some trapped air. Since some of the volume in the measuring chamber is then air, the meter is not accurate. click for more...

Insertion Flowmeter Thermal Probe Orientation

Previous articles described the existing installation and operation of a fume flowmeter for an incinerator. The new installation was more complex and used fumes to replace up to 80 percent of the combustion air but could drop to near zero flow in approximately 5 seconds. The new fume flowmeter measurement was used in the combustion control strategy and also in the control strategy to ensure that the fume nozzles did not overheat. click for more...

Differential Pressure Across Orifice Plate with Increased Flow

Increasing flow from 100 to 200 liters per minute (lpm) will cause an orifice plate primary flow element to generate: 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.