Screw-Type Flow Meters SVC
Screw-type flow meters belong to the group of positive displacement flow meters. Two measuring spindles with a screw-shaped profile engage with each other. They are low-friction mounted using roller contact bearings and enclosed by a housing. 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 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.
Features
- Measuring range = 0,4 ... 3750 l/min
- Measuring ratio = 1: 150
- Operating pressure = ... 400 bar
- 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
- High working reliability of the electronics
- Easy to use terminal of the preamplifier
- Working indication of the electronic
- Sensor system and preamplifier in EMC-compatible design
- Explosion-proof version available (ATEX)
