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Flow Measuring Devices

Learning objectives

  • Describe the following types of flow measuring devices, or flowmeters:
    • Mass flowmeters
    • Velocity based flowmeters
    • Variable area flowmeters
    • Pressure based flowmeters
  • Explain how a Coriolis flowmeter and a thermal flowmeter determine mass flowrate
  • Describe the operation of the following velocity based flowmeters:
    • Turbine flowmeter
    • Vortex flowmeter
    • Magnetic flowmeter
    • Ultrasonic flowmeter
    • Optical flowmeter
  • 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
    • Pitot tubes
  • Describe the difference between and give examples of concentric and non-concentric orifice plates

Course overview

When you complete this lesson, you will be able to identify and describe the basic operation of various direct and indirect flow measurement devices.

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