VEGA VEGAPULS 68 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA_HART four-wire - Manual (Page 13)

1 3 2
100%
0%
4
Fig. 3: Measuring range (operating range), max. measuring distance and
reference plane
1 full
2 empty (max. measuring distance)
3 Measuring range
4 Reference plane
Information:
I
f the medium reaches the antenna, buildup can form on it and cause
faulty measurements later on.
T he emitted radar impulses of VEGAPULS 68 are electromagnetic
waves. They have hence an electric and a magnetic share which are in
rectangular relation. The polariation plane is defined by the direction of
the electric share. With radar sensors, the polarisation can be used to
reduce the effect of false echoes considerably by turning the
instrument in the connection flange or mounting boss. The position of
the polarisation plane is marked on the instrument.
Polarisation plane
VEGAPULS 68 • 4 … 20 mA/HART four-wire 13
4 M ounting
29262
-EN
-090305