VEGA VEGASON 64 4 … 20 mA_HART four-wire - Manual (Page 12)

T
he reference plane for the measuring range (version A) is the lower
edge of the flange. The reference plane for versions B, C and D is the
lower edge of the transducer.
R
emember that with all versions there is a minimum distance below
the reference plane - the so-called dead band - in which measurement
is not possible; this distance from reference plane to medium must not
be underrun. The exact value of the dead band is stated in chapter
"
Technical data".
Information:
I
f the medium reaches the transducer, buildup can form on it and
cause faulty measurements later on.
1 3 2
100%
0%
4
Fig. 3: Version A - Measuring range (operating range) and max. measuring
distance
1
full (dead band)
2 empty (max. measuring distance)
3 Measuring range
4 Reference plane
Measuring range
12 VEGASON 64 • 4 … 20 mA/HART four-wire
4 M ounting
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-EN
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