603-08 - Level Measuring Devices

603-08 - Level Measuring Devices

Learning objectives

  • Describe the basic types of level measurements, including point and continuous level methods
  • Explain the operation of direct measuring level instruments for weighted tape gauge
  • Explain the operation of direct measuring level instruments for sight glass
  • Explain the operation of direct measuring level instruments for reflex gauge glass
  • Explain the operation of direct measuring level instruments for float
  • Explain the operation of the following types of indirect measuring level instruments: pressure, detector, bubbler, displacer, capacitance probe, ultrasonic/radiation sensor and weight sensor

Course overview

Level is the height of a liquid surface in reference to a starting point or zero. Knowing and maintaining proper levels contributes to safety and environmental compliance. Knowing how much material is located within a vessel is important to make definitive judgements about the process.

The Level Measuring Devices training course looks at instruments used to measure or sense the level of a tank, silo, or other vessel. It identifies various level sensing and measurement devices and describes their operation. This online course focuses on:

  • Review of level measuring methods
  • Direct measurement instruments
  • Indirect measurement instruments

Level 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.


  • 50 minutes
  • Format: Online Interactive
  • English
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