Advantages and Disadvantages of a Rotameter

Instrumentation Flow
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Rotameter Advantages:

  • A rotameter doesn’t require power, so it is safer to use with flammable fluids than a flow meter that does use electrical power.

  • A rotameter is flexible in the type of applications it is suited for. It can be used for clean and relatively dirty liquids and gases.

  • The cost of a rotameter is low in comparison with most other types of pipe flow meter.

Rotameter Disadvantages:

  • Typical accuracy for a rotameter is 1% to 10% of full scale. Several other types of flow meter have typical accuracy better than this.

  • As noted above the rotameter doesn’t work well for machine reading or continuous recording of flow rate.

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