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DAVID W SPITZER'S E-ZINE (November 2022)


Level Gauges (Part 3 of 4) by David W Spitzer and Walt Boyes

Hydrostatic level measurement systems are based upon physical properties that are related to the density of the material. These systems are typically applied to liquid or slurry levels, but other levels may be measured in some processes. Hydrostatic level measurement is based on the principle that increasing fluid level will increase the pressure exerted by the fluid. Hydrostatic sensors are typically used to measure the fluid pressure near the bottom (and sometimes the top) of the vessel. This information is used to infer the height of the fluid that is dependent upon knowledge of the specific gravity of the fluid.

Inaccurate Flow Measurement System Causes Overbilling by David W Spitzer

Previous articles described the sewage collection systems for two adjacent sewage districts and how the fourth flowmeter zero adjustment was offset to measure higher than the actual sewage flow.

Coriolis Mass Flowmeter Orientation for Vapor Applications (Part 3 of 3) by David W Spitzer

Which of the following orientations can be used to install a Coriolis mass flowmeter to measure the mass flow of a condensable vapor in a vertical pipe flowing down?


In addition to over 40 years of experience as an instrument user, consultant and expert witness, David W Spitzer has written over 10 books and 500 articles about flow measurement, level measurement, instrumentation and process control. David teaches his flow measurement seminars in both English and Portuguese.


Spitzer and Boyes, LLC provides engineering, technical writing, training seminars, strategic marketing consulting and expert witness services worldwide.


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