Processing Magazine

PD flowmeter system measures high-viscosity fluids in food ingredient applications

September 1, 2009
The ingredient measurement positive displacement (PD) flowmeter system features a bearing less design with only two moving parts. The flowmeter is ideal for measuring high-viscosity fluids in food applications where batch repeatability is desired. In many food applications higher viscosity requires that Coriolis meters be specified at a larger line size to minimize pressure drop, which inherently limits the low-end measurable flow rate compared to a smaller line size meter. Employing the flowmeter system helps improve quality control in food manufacturing. The system is suitable for measuring flow rates as low as 0.001 gallons per minute and is designed for applications involving high pressure and pulsating flow streams. 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. The PD flowmeter employs 316 stainless steel construction, advanced thermoplastic impellers, and a non-intrusive pickoff sensor. The meter offers repeatability of +/-0.05% of rate and up to 1,000:1 turndown, and can measure viscosities up to 1,000,000 cP+. The system is Clean-in-Place (CIP) compatible -- ensuring a low cost-of-ownership.The PD meter can also be quickly opened in-line for inspection and physical maintenance if needed. It is available for 1/8 inch to 2-inch lines sizes.