SIKA Vortex Flow Sensor Families
Vortex shedding sensors for liquid flow measurement in equipment.
Original manufacturer: SIKA Dr. Siebert & Kühn GmbH & Co. KG.
Official Product Categories
SIKA manufacturer sensor, flow and temperature ranges →
Model selection requires exact fluid, process temperature, measuring range, switch function or output signal.
SIKA vortex — liquid versus gas measurement
SIKA’s pictured VVX15 is one example in its liquid-flow vortex portfolio. Vortex shedding has a fluid velocity/viscosity operating envelope and usually requires adequate line filling and a compatible pipe section. Choose the model’s actual calibrated flow range, output and wetted body material; a related model may not share the same connector or nominal bore. A liquid vortex sensor should not be assumed interchangeable with a turbine meter or gas air-velocity transmitter.
SIKA VVX vortex sensors — four constructions and accurate liquid-flow interfaces
| Family / parameter | Original maker evidence | Engineering difference |
|---|---|---|
| Vortex principle | A bluff body forms alternating Kármán vortices; encapsulated piezoceramic pickup detects their frequency | Suitable for liquids with suitable viscosity; the sensor does not measure duct air velocity or CO₂. |
| Plastic VVX15/20/25 | DN 15–25, manufacturer overall family 2–150 L/min | Selectable G threads/QuickFasten; model flow minima and pressure loss vary with nominal diameter. |
| Brass VVX32/40 MS | DN 32/40, manufacturer 12–400 L/min across versions | Do not apply the full 400 L/min range to smaller DN15 configurations. |
| Stainless VA and Tri-Clamp | Stainless VVX15/20/25 VA 4–145 L/min; Tri-Clamp VVX25/32/40 VA 6–400 L/min | Distinct wetted materials and hygienic process connections; check installation and cleaning chemistry. |
| Output variants | NPN/push-pull frequency and optional analogue 0.5–3.5V, 0–10V or 4–20mA; IO-Link / LIN on selected subfamilies | Treat every output as order-code-specific, not present simultaneously on every VVX. |
| R290/heat-pump marking | Current manufacturer shows special VVX versions for heat-pump loops and refrigerant requirements | Check the exact approved variant and medium. Product family membership does not establish blanket flame-proof Ex approvals. |
Selection and qualification checklist
These are liquid-flow vortex components requiring straight-run/flow-conditioning and fluid-specific calibration. Frequency is proportional to flow; translate to L/min using exact factory K factor. Avoid comparing directly with magnetic-inductive systems on nonconductive liquids.
Manufacturer sources: SIKA current VVX family ranges and outputs · SIKA VVX15/20/25 maker variant configuration.