Product descriptio
Possible areas of application 
SIKA VMI 20 units are used in applications such as cooling processes in machine and plant engineering as well as in building services.
Description
Function
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)
- Analog 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 pulse output* | ±1.5 % of reading ±0.3 % full scale |
| Accuracy analogue output* | Additionally typical ±1.25 % of reading ±0.3 % full scale |
| Repeatability* | 1 % |
| Medium / min. conductivity of medium |
Water and other conductive liquids / 50 μS/cm |
| Medium temperature | 5...90 °C |
| Ambient temperature | Min. 5 °C, max. please see data sheet |
| Pressure rating | PN 16 |
| Pulse outpu | Standard: 200 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 (with attached cable socket) |
* Test conditions: Water 23 °C at 300µS; standard puls rate
Further details and accessories can be found in the datasheet.
