DVZ – Vortex Flow Meter and Switch

Compact, Low Cost Inline Vortex Flow Meters

KOBOLD DVZ inline vortex flow meters for low viscosity liquids feature a long service life and low maintenenace as they do not utilize a mechanical means of measurement, where components can break or wear out, and are the perfect solution for applications requiring reliability and low cost.

The DUK is available with a PPS body and your choice of either nickel-plated brass or 316 stainless steel fittings. The bluff body is available in either the standard PPS or optional ceramic material, which has excellent long-term wear characteristics even under harsh operating conditions. Available outputs for the DVZ include pulse frequency, 4-20 mA, adjustable relay, and compact electronics with LED digital flow rate display, 4-20 mA output and adjustable transistor switch options.

Vortex Measurement Principle

The DVZ senses flow rate using the vortex-shedding principle. A small obstruction, known as a bluff body or shedder-bar, is placed within the flow path. As flow occurs past the bluff body, small low-pressure vortices (swirls) are created just behind it. The vortices alternate to either side of the bluff body in a uniform pattern and the frequency of the vortex shift is directly proportional to flow rate. A very sensitive pressure sensor is used to detect the shifts and a scaled flow rate signal is produced. To learn more about Vortex Flow Meters and their advantages and limitations, visit our in depth article.

Other Vortex Flow Meter Types

KOBOLD also offers the DVE Insertion Vortex Flow Meter which is also a multivariable vortex flow meter. The DVH Vortex Flow Meter is an inline multivariable flow meter for more demanding process elements.

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