Vega FIBERTRAC 31 4 … 20 mA_HART - four-wire With SIL q Bedienungsanleitung PDF herunterladen (Seite 14)

4 Mounting

FIBERTRAC 31 • 4 … 20 mA/HART - four-wire

43386-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.

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L1L2

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

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Vega FIBERTRAC 31 4 … 20 mA_HART - four-wire With SIL q Bedienungsanleitung Seite 14