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New flow meter for high-viscosity fluids

By Mike Stones , 10-Sep-2009

Designed to measure high-viscosity fluids in food applications, the new flow meter from Flow Technology, Inc delivers a high level of batch repeatability, claims the company.

Its DC-F/IM (Ingredient Measurement) positive displacement (PD) flow meter system features a bearingless design with only two moving parts which is said to improve the meter’s durability.

“Employing Flow Technology's Decathlon Series DC-F PD flow meter, the DC-F/IM system helps improve quality control in food manufacturing,” claims the manufacturer. The DC-F/IM is suitable for measuring flow rates as low as 0.001 gallons per minute (GPM) and is designed for applications involving high pressure and pulsating flow streams.

Unique geometry

Due to its unique geometry, the PD meter can be utilized in the optimal line size, which minimizes pressure drop and enables accurate measurement across the entire desired flow range,” says the company.

The flow meter features 316 stainless steel, advanced thermoplastic impellers, and a non-intrusive pickoff sensor. The company says it can deliver repeatability of +/-0.05 per cent of rate and up to 1,000:1 turndown, and can measure viscosities up to 1,000,000 cP+.

Compared with some competitor models, the DC-F/IM system is Clean-in-Place (CIP) compatible which helps to reduce operating costs, claims the company.

The meter can also be quickly opened in-line for inspection and maintenance. It is available for 1/8 inch to 2-inch lines sizes.

Higher viscosity

Food manufacturers use various flow meter designs to measure a wide range of thick and/or abrasive liquids, including chocolate, caramel, corn syrup, mayonnaise and frosting,” says the company. “In many of these applications, however, higher viscosity requires that Coriolis meters be specified at a larger line size to minimize pressure drop, which inherently limits the low-end measureable flow rate compared to a smaller line size meter.”

The Flow Technology line of positive displacement flow meters use two patented impellers (gears) to measure precise volumes of liquid that pass through the flow meter as the gears rotate. These flow meters are designed to accurately measure thicker fluids such as food liquids in addition to resins, polyurethanes, adhesives, paints, and various petrochemicals.

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