Vega FIBERTRAC 31 - Corresponding source container

11
3 Mounting
FIBERTRAC 31 • Four-wire 4 … 20 mA/HART
62067-EN-211203
L1L2
h
1
Fig. 5: 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Primaryandallotherinstruments
operate as Summation Secondary. The pulse rates of all instruments
are summed in the Primary 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.
Mount the FIBERTRAC 31 in such a way that the detector hose
is directly in the radiated area of the source container. Mount the
FIBERTRAC 31 preferably side by side and make sure that no detec-
tor hose is hidden by another sensor.
Onvesselswithtemperatureinsulation,thesensorandthesource
container should be preferably mounted outside of the tank insulation.
Vessel with heat insula-
tion