VEGA FIBERTRAC 31 Profibus PA - Manual (Page 14)

14
4 Mounting
FIBERTRAC 31 • Profibus PA
43833-EN-131119
Mount the source container as close as possible to the vessel. If there
are gaps, secure the area with a safety fence and protective grating
so that no one can reach into the dangerous area.
To measure the level in very high vessels, multiple instruments can be
cascaded.
Cascading means that two or several instruments are connected
which can together cover a longer measuring range.
You can find the exact number of Slaves in the Safety Manual.
L1
L2
h
1
Fig. 4: Installation position - cascading arrangement
h Summed measuring range
L Measurement length (L1, L2)
1 Red marking line for designating the measuring range
Here, one instrument acts as a Master and all other instruments
operate as Summation Slaves. The pulse rates of all instruments
are summed in the Master instrument and converted into a common
signal.
If several sensors are cascaded, the measuring ranges of the indi-
vidual detectors must directly join each other. The detectors must also
slightly overlap.
Make sure that the red marking lines directly join the measuring range
of the next FIBERTRAC 31.
Summation