The compact KOBOLD Type PWL flow meter works on the Vortex principle. A Karman vortex is created downstream of the sensor body, i. e. the fluid flow causes vortices to be created on both sides, and these are straightened out by the current. This straightening out of the vortex is proportional to the flow velocity of the medium.
Every vortex creates a small negative pressure which is detected by a capacitive pressure pick-up and converted into an electrical pulse. A downline transducer converts the pulse signal into a standard output signal.
Features & Benefits
- Measuring range: 0.2 - 5 ... 32 - 970 m³/h liquids, 3 - 28 ... 549 - 9034 Nm³/h (20°C, 0 bar rel) air, 3 - 18 ... 500 - 5797 kg/h (0 bar rel) vapour
- Connection: ANSI ½ ... 8", flange DN15 ... DN200, wafer flange
- Material: stainless steel, Hastelloy
- Pmax: PN 16, 40, 100
- tmax: 260°C (400°C)
- Accuracy: ±0.7 % of reading liquids, ±1 % of reading gas/vapour, 1 (3) analogue outputs, 1(3) contacts, digital display
- Option: temperature / pressure sensor
