VEGA VEGASON 66 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 zone)
2 empty (max. measuring distance)
3 Measuring range
4 Reference plane
Gauge pressure in the vessel does not influence VEGASON
66. Low pressure or vacuum, 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
microwave.
4.2 Mounting preparations
Version B is supplied in two parts: Transducer and electronics
housing.
Assemble the version as follows:
1 Loosen the screws on the fixing ring (4) with a hexagon
spanner (size 4), remove the transducer tube out of the
swivelling holder
2 Mount the flange
3 Insert the transducer tube in the requested length from
below into the swivelling holder
4 Fasten with screws (4); torque max. 10 Nm
5 Remove the plug from below out of the instrument housing
and plug it into the socket of the transducer tube
Pressure/Vacuum
Mounting - Version B
VEGASON 66 - 4 ... 20 mA/HART - four-wire 13
Mounting
28783
-EN
-060731