Rotary Abutment Flow Meters Working Principle and Animation

Rotary Abutment Flow Meter is another form of the positive displacement flow meter. As there is no metal contact within the chamber they have a long service life, also maintaining accuracy too.

They have a wide viscosity range making them suitable for many types of fuels & lubrication fluids. The rotors are connected to timing gears, so each time a rotor turns, the displaced volume is transferred to the register and the controller calculates the flow.

Rotary Abutment Flow Meter

Rotary Abutment Flow Meters Working Animation

Credits: hytekflowmeters.com

There is no metal-to-metal contact between the rotors and housing walls, which prolongs the life of the flow meter.

Advantages of Rotary Abutment Flow Meter

  • The sweeping action of vanes prevents the buildup of sediment and keeps the compartment clean.
  • Wide choice of construction materials.
  • High accuracy and repeatability.
  • Low-pressure drop over the entire range of flow measuring capabilities.

Disadvantages of Rotary Abutment Flow Meter

  • Relatively complex design increases cost.

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