Magnetic inductive flow sensor Type VMI 20


Product descriptio

Possible areas of application Magnetic inductive flow sensor Type VMI 20

SIKA VMI 20 units are used in applications such as cooling processes in machine and plant engineering as well as in building services.



The smart flow sensors of the induQ® series operate according to the principle of induction: The measuring pipe is in a magnetic field (B). If an electrically conductive medium, with the flow (Q) to be measured, flows through the measuring pipe and thereby at a right-angle to the magnetic field, a voltage (U) is induced in the medium. This voltage is proportional to the average flow velocity and is picked up by two electrodes.

Regarding flow proportional output signals two versions are available:

  • Frequency output signal (standard)
  • Analogue and frequency output signal (option)

The pulse rate can be configured at the factory.

The induQ® sensors enable the flow measurement/volume flow measurement or dosing of electrically conductive liquids without any moving parts. They are the ideal flow sensors when accuracy and reliability are a must.

Technical features

Technical features

 All sensors will be delivered with a works calibration certificate
Nominal diameter DN 20
Flow range 5...250 l/min
Process connection G1-ISO 228 male
Accuracy* ±(1.5 % of reading + 0.3 % of range)
Repeatability* 1 %
Medium /
min. conductivity of medium
Water and other conductive liquids /
50 μS/cm
Medium temperature -20...90 °C
Ambient temperature Min. -10 °C, max. please see data sheet
Pressure rating PN 16
Frequency output Standard: 100 pulses/l
Analogue output (optional)
4...20 mA
0...10 V
Power supply 24 VDC ±10 %
Electrical connection Plug connector M12 x 1
Degree of protection EN 60529 IP65 and IP67 (with attached cable socket)

* Test conditions: Water 23 °C at 150 ±100 μS/cm; standard puls rate

Further details and accessories can be found in the datasheet.


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