Kobold Instrumentation offers the compact vortex flow meter Model DVZ for measuring and monitoring smaller and medium-sized flow of low viscosity, water-like liquids in pipes. The device works using the vortex principle, making it virtually maintenance-free. This involves the installation of a sharp-edged object (the vortex generator) in the flow duct. Vortices are created behind the object whose frequency are proportional to the velocity of flow of the liquid. The flow volume can be determined with a high degree of accuracy by measuring the vortex frequency. The result is a very high linearity over the whole measuring range with an accuracy of 2,5% of full scale.
The device can be fitted with switching, frequency or analogue outputs. There is also an optional compact electronics package that includes a digital display, and both a switching and analogue output. Dosing and metering electronics are currently being developed.
The flowmeter finds application in the following areas:
• Monitoring the flow of low viscosity liquids.
• Measuring of aggressive, high-purity or salty solutions.
• Unsuitable for abrasive media or media containing a large proportion of fibres.
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