Possible areas of application
The VTM15 are sensors for liquid flow measurement in solar heating plants. With compact dimensions and high measurement accuracy, they offer, compared to conventional water meters, convincing advantages:
- A temperature sensor can be integrated into the turbine body saving additional installation costs
- The maximum medium temperature of 120 °C offers sufficient safety and reliability for all operating conditions.
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.
|For medium temperature up to 120 °C
|Material pipe section||Brass|
|Measurement range||2...20 l/min|
Max. 120 °C
|Pressure rating||PN 10|
|Nominal diameter||DN 15|
|Process connection||G¾ male incl. union nuts|
|Sensor||Hall effect sensor|
|Pulse Output||915 pulses/litre|
|Electrical connection||1.5 m PVC cable, screened (Tmax = 80 °C)|
|Degree of protection||IP54|
- Integrated temperature sensor:
Pt100 / 3-wire or Pt1000 / 2-wire
1.5 m PVC cable, screened (Tmax = 80 °C)
Further details and accessories can be found in the datasheet.