15
4 Mounting
VEGAPULS 66 • 4 … 20 mA/HART - two-wire
28438-EN-170927
The instrument is suitable for standard and extended ambient condi-
tions acc. to DIN/EN/IEC/ANSI/ISA/UL/CSA 61010-1.
4.2 Mounting instructions
When mounting the VEGAPULS 66, keep a distance of at least
500 mm (19.69 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
").
If you cannot maintain this distance, you should carry out a false
signal suppression during setup. This applies particularly if buildup on
the vessel wall is expected. In such cases, we recommend repeating
the false signal suppression at a later date with existing buildup.
> 500 mm
(19.69")
Fig. 5: Mounting on round vessel tops
1 Reference plane
2 Vessel center or symmetry axis
In vessels with conical bottom it can be advantageous to mount the
sensor in the centre of the vessel, as measurement is then possible
down to the bottom.
Suitability for the ambient
conditions
Installation position
