Mounting Instructions - Vega VEGASON 61 Operating Instructions Manual

Pressure/Vacuum
Screwing in
Installation position
VEGASON 61 • Four-wire 4 ... 20 mA/HART
Fig. 4: Measuring range (operating range) and max. measuring distance
1 full
2 empty (max. measuring distance)
3 Measuring range
Gauge pressure in the vessel does not influence VEGASON 61. Low
pressure or vacuum does, however, damp the ultrasonic pulses. This
influences the measuring result, particularly if the level is very low.
With pressures under -0.2 bar (-20 kPa) you should use a different
measuring principle, e.g. radar or guided radar (TDR).
4.2

Mounting instructions

Screw VEGASON 61 into the mounting socket with an appropriate
spanner applied to the hexagon of the process fitting. Max. torque see
chapter " Technical data".
Warning:
The housing must not be used to screw the instrument in! Applying
tightening force can damage internal parts of the housing.
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 3
100%
0%
4 Mounting
13