VEGA VEGAPULS 61 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA__HART four-wire - Manual (Page 15)

must be screwed to the sensor with the three hexagon socket screws
M
5 x 10 and spring washers before setup. Max. torque see chapter
" Technical data". Necessary tools: Allen wrench size 4.
S
crewing on is possible in two ways. Depending on the selected
version, the sensors can be swivelled in the strap as follows:
l S ingle chamber housing
-
180° infinitely variable
-
in three steps 0°, 90° and 180°
l D ouble chamber housing
-
90° infinitely variable
-
in two steps 0° and 90°
4 .3 Mounting instructions
W hen mounting the sensor, keep a distance of at least 200 mm
(7.874 in) from 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").
I f 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
storage later with existing buildup.
> 200 mm
(7.87")
Fig. 7: Mounting on round vessel tops
1 Reference plane
2 Vessel center or symmetry axis
Mounting position
VEGAPULS 61 • 4 … 20 mA/HART four-wire 15
4 M ounting
28439
-EN
-100426