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Positive displacement flow meter SVC
helical screwfor liquidsin-line

positive displacement flow meter
positive displacement flow meter
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Characteristics

Technology
positive displacement, helical screw
Fluid
for liquids
Other characteristics
in-line
Process pressure

Max.: 400 bar (5,801.51 psi)

Min.: 0 bar (0 psi)

Volumetric flow rate

Max.: 3,750 l/min (990.6 us gal/min)

Min.: 0.4 l/min (0.1 us gal/min)

Description

Screw-type flow meters belong to the group of positive displacement flow meters. Two measuring spindles (pos. 2) with a screw-shaped profile engage with each other. They are low-friction mounted using roller contact bearings (pos. 3) and enclosed by a housing (pos. 1). The liquid flow causes the spindles to rotate and passes through the device in an axial direction. In so doing, self-contained part volumes are formed which are continuously filled and emptied. This principle of measurement causes no pressure and/or flow pulsations. A sensing wheel attached to the measuring spindle (pos. 4) is scanned by two non-contact sensors. Using two sensors, a bidirectional flow with detection of flow-direction is possible. The inflow and outflow occurs almost without deflection. Consequently, the device exhibits a relatively low drop in pressure. Measuring this way does not require the flow to be calmed at the inlet and outlet. All moving parts are lubricated by the measurement medium. Product Characteristics • Very low pressure drop • High-response measurement • Measurement with changing flow direction • pulsation free measurement principle • High working pressure • Very low noise emission • Measurement independent of viscosity within the specified ranges • High-precision measurement with outstanding reproducibility • Temperature-independent output signals over a wide temperature range • High degree of accuracy, even with low flow rates at the bottom end of the measuring range

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.