VEGA VEGASON 61 4 … 20 mA_HART - four-wire - Manual (Page 12)

12
4 Mounting
VEGASON 61 • 4 … 20 mA/HART - four-wire
28778-EN-130417
When mounting the sensor, keep a distance of at least 200 mm
(7.874 in) to the vessel wall. If the sensor is installed in the center of
dished or round vessel tops, multiple echoes can arise. These can,
however, be suppressed by an appropriate adjustment (see chapter
"Setup").
1
2
> 200 mm
Fig. 5: Mounting on round vessel tops
1 Reference plane
2 Vessel center or symmetry axis
If you cannot keep this distance you should carry out a false echo
storage before setup. This applies mainly if buildup on the vessel wall
is expected. In this case, we recommend repeating a false echo stor-
age later with existing buildup.
In vessels with conical bottom it can be advantageous to mount the
sensor in the center of the vessel, as measurement is then possible
down to the lowest point of the vessel bottom.
Fig. 6: Vessel with conical bottom
Socket pieces should be dimensioned so that the lower end of the
transducer protrudes at least 10 mm (0.394 in) out of the socket.
Installation position
Socket