VEGA VEGAFLEX 65 4 … 20 mA_HART two-wire User Manual
Page 44
-
2. HART
value (Secondary Value)
D
istance to the level - scaled (for example hl, %)
R
esolution, digital
>
1
mm (0.039 in)
Accuracy (according to DIN EN 60770-1)
P
rocess reference conditions according to DIN EN 61298-1
-
T
emperature
+
18 … +30 °C (+64 … +86 °F)
-
R
elative humidity
45 … 75 %
-
A
ir pressure
+
860 … +1060
mbar/+86 … +106 kPa
(+12.5 … +15.4
psig)
I
nstallation reference conditions
-
M
in. distance to installations
>
500
mm (19.69 in)
-
V
essel
metallic, ø 1 m (3.281 ft), centric installation,
process fitting flush with the vessel ceiling
-
M
edium
W
ater/Oil (dielectric figure ~2.0)
-
I
nstallation
P
robe end does not touch the vessel bottom
S
ensor parameter adjustment
G
ating out of false signals carried out
D
eviation
see diagrams
D
epending on the installation conditions, there can
be deviations which can be rectified with an
adaptation of the adjustment or a change of the
measured value offset in the DTM service mode.
L
0
-2 mm (-0.079
")
2 mm (0.079
")
-10 mm (0.394
")
5 mm (0.197
")
0,15 m (5.906
"
)
0,03 m (1.181
"
)
0,05 m
(1.969
")
1
Fig. 21: Deviation VEGAFLEX 65 in coax version in water
1
Dead zone - no measurement possible in this area
L
Probe length
44
VEGAFLEX
65 • 4 … 20
mA/HART - two-wire
10 S
upplement
31845
-EN
-120329