Variable Area Flow Meter

McMenon Variable Area flowmeters offer a simple and versatile measurement solution for liquid and gas process fluids. The clear glass tubes provide an ideal method of visualising flowrate quickly and easily. With a range of tube lengths and tapers available, we have a meter designed to meet your fluid and process requirements for low flowrate applications in the field or laboratory.

Our Variable Area flowmeters are flexible to customer needs with the capability to provide the measurement in direct measurement scale, corrected to standard or normal conditions or even as a ratio of tube diameter to float diameter along the tapered tube. Each scale can be adjusted to achieve the specific accuracy class needed from the application with conformity to the VDI/VDE standard.

The Variable Area Flow meter range of instruments provide an economical solution for laboratory and OEM customers. Pressure and flow control are available with the use of regulators and flow control valves. A simple, cost effective solution for a multitude of applications.


  • Tube diameter ranges from 1/8” to 1/2”
  • Suitable for all transparent liquids and gases
  • Accuracy classes from 1 to 10
  • Flow and pressure control available
  • Easily installed

Sizing and selection is simplified by use of McMenon Solve,
available to download now

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Variable Area Flow Meter