603-09 - Flow Measuring Devices

603-09 - Flow Measuring Devices

Learning objectives

  • Explain how a rotameter uses variable flow area to determine flowrate
  • Explain how differential pressure can indirectly indicate flowrate
  • Describe the following methods for producing a differential pressure that are commonly used in flow measuring instruments: orifice plates, venturi tubes, flow nozzles, and pitot tubes

Course overview

Flow rate is defined as the amount of material passing a specific point per unit time. Flow rate measurement is one of the most complicated tasks performed by process instrumentation and control equipment.

The Flow Measuring Device training course identifies and describes the basic operation of various direct and indirect flow measurement devices. This online course covers:

  • Mass flowmeters
  • Velocity based flowmeters
  • Variable area flowmeters
  • Pressure based flowmeters

Flow Measuring Devices is part of the Process Control Variables training series.


The individuals involved in the development and promotion of this course do not receive any compensation or financial benefits outside of their regular employment for their work on this course.


  • 55 minutes
  • Format: Online Interactive
  • English
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