Preso Ellipse AF Annular Flanged Flow Device – Badger Meter

Badger Meter Preso Ellipse AF

The Preso Ellipse Model AF annular flanged flow device is a multi-ported, self-averaging differential pressure flow element. Its innovative elliptical shape provides the lowest permanent pressure loss in the industry. The Ellipse flow meter is designed with a series of ports facing the upstream velocity pressures and flow sensing ports strategically located ahead of the trailing edge flow separation.


The flow element has a two piece construction, of an elliptical
shape with two 100% independent flow sensing chambers to
prevent signal degradation and mixing or that require dampening
hardware or software. The impact velocity sensing holes are located
along the leading edge and the true static sensing holes are on the
exterior probe side. The probe does not generate any vortices or
vacuum effects that impinge on the static pressure measurement
sensing area and has a drag coefficient of 0.32 or less. Each flow
sensor is complete with instrument shut off valves with provisions
to accept a transmitter or direct indicating meter. An identification
tag is supplied with specific flow station measurement information
as required.



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