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C.4. - Installing the temperature sensors
The controller operates with Pt1000 temperature sensors which are accurate to the
degree, thus ensuring optimal control of system functions.
Position the sensor precisely in the area to be measured!
It is recommended that at least 20 cm of the sensor cable at the sensor are installed inside the
pipe insulation.
Connect the VFS sensors with the matching jacks.
Caution
Sensor cables for PT1000 can be extended to a maximum of 10m using a
cable with a cross-section of at least 0.75 mm².
Sensor cables for the VFS sensor can be extended to 3 m.
Make sure that there is no contact resistance!
Example:
Connections and dimensions of the Vortex Flow Sensors VFS2-40
3/4 “ 1 “
10,7 cm
Installation
Caution
Controller and VFS sensor have to have the same ground potential. The VFS
sensor uses a functional earth connector (PELV). The PE-connector of the
controller has to be connected to the pipe system near the sensor.
The temperature sensor cables must be routed separately from mains voltage
cables, and must not, for example, be routed in the same cable duct!
It must be ensured on site that the piping system is grounded properly
and at the same potential as the protective conductor of the controller.
Caution
Attention
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