VEGA VEGASON 65 4 … 20 mA_HART four-wire - Manual (Page 13)

1 3 2
100%
0%
4
Fig. 4: Version B, C, D - Measuring range (operating range) and max. measuring
distance
1
full (dead band)
2 empty (max. measuring distance)
3 Measuring range
4 Reference plane
G auge pressure in the vessel does not influence VEGASON 65. Low
pressure or vacuum does, however, damp the ultrasonic pulses. This
influences the measuring result, particularly if the level is very low.
W
ith pressures under -0.2 bar (-20 kPa) you should use a different
measuring principle, e.g. radar or guided microwave.
4.2 Mounting preparations
Warning:
M
ounting preparations must be carried out in idle condition. Non-
observance can cause damages on the electronics!
V ersion B is supplied in two parts:
l T ransducer
l E lectronics housing
A ssemble the version as follows:
1 L oosen the screws on the fixing ring (4) with a hexagon spanner
( size 4), remove the transducer tube out of the swivelling holder
2 M
ount the flange
Pressure/Vacuum
Mounting - Version B
VEGASON 65 • 4 … 20 mA/HART four-wire 13
4 M ounting
28782
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EN
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