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
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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