Turbine flow sensor Type VTH15


Product description

Possible areas of application Turbine flow sensor Type VTH 15

SIKA VTH15 turbine flow sensors are used for flow measurement and dosage in water and water mixtures, and are used in many applications such as:

  • Monitoring cooling circuits in machine and plant engineering
  • Water treatment
  • Cleaning processes
  • Dosing



Measuring principle
The liquid flowing into the turbine flow sensor is split into individual jets by the guiding blade. These jets hit the rotor evenly from different directions, setting the rotor in motion. The rotation speed of the rotor is then converted to an electrical pulse signal (frequency): The rotor is fitted with magnets and a Hall effect sensor detects the rotation of the rotor.
A flow-proportional frequency signal (square-wave signal) is made available.
Given the uniform inflow to the bearing, the forces largely cancel themselves out and wear is reduced to a minimum. The extremely hard bearing materials - sapphire and hard metal - also guarantee an exceptionally long endurance.

Technical features

Technical features

Economy-priced type for standard and serial applications
Material pipe section
Plastic PPO
Measurement range 2...40 l/min - with continuous flow max. 20 l/min
Accuracy ±0.4 l/min
Reproducibility ±0.1 l/min
Medium temperature

Max. 85 °C

Pressure rating PN 10
Nominal diameter DN 15
Process connection G¾ male thread with union nuts and gaskets
Sensor Hall effect sensor
Pulse Output 855 pulses/litre
Electrical connection 1.5 m PVC cable, screened (Tmax = 70 °C) or 4 pin plug connector M12 x 1

Power supply

4.5...24 VDC
Degree of protection IP54



  • Screen filter:
    Hat shape, mesh size 0.5 mm
    Tmax = 60 °C (continuous)
    Tmax = 85 °C (max. 1 h)
  • Integrated temperature sensor:
    Pt100 or Pt1000, 3-wire,
    class B (class A on request)
    2 m of PVC cable, screened or 3 pin plug connector M8


Further details and accessories can be found in the datasheet.


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