Vortex flow-meter Aalborg Instruments

AALBORG®'s VORTEX METERS for steam, liquid, and gas applications have no moving parts to wear or fail. Vortex In-line (WAFER, FLANGE. and INSERTION (fixed or retractable)mounted models need less maintenance. In addition, These units offer high accuracy throughout the flow range.

Unique dual signal processing technology independently measures each vortex, filters out non-flow noise, and increases accuracy and turndown. All

Meters are NIST traceably calibrated and individually programmed.

PRINCIPLES OF OPERATION:
Vortices are created when a fluid passes around a bluff
body as shown below. Vortices are alternately shed on each
side of the body, 180 degrees out of phase to each other,
resulting in an oscillating pressure gradient. As flow increases
the frequency of vortices increases in proportion to the
increased flow thereby creating a linear relationship.

BENEFITS:
RELIABLE: Electronics can be remote- mounted.
No fluid-to-sensor contact.
No holes to clog.
WIDE RANGEABILITY: High flow turndown ratio up to 80:1.
HIGH ACCURACY: ±0.5% of rate.
INCREASED NOISE CANCELLATION: Non-flow noise filtered out.

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