VEGA VEGAFLEX 83 4 … 20 mA_HART two-wire PFA insulated User Manual
Page 79
79
11 Supplement
VEGAFLEX 83 • 4 … 20 mA/HART two-wire
41834-EN-130612
Ʋ Medium
Water/Oil (dielectric constant ~2.0)
4)
Ʋ Installation
Probe end does not touch the vessel bottom
Sensor parameter adjustment
No gating out of false signals carried out
Typical deviation - Interface measure-
ment
± 5 mm (0.197 in)
Typical deviation - Total level interface
measurement
See following diagrams
Typical deviation - Level measurement
5)6)
See following diagrams
0,2 m
(7.874
"
)
0,1 m
(3.937
"
)
0,04 m
(1.575
")
1
L
0
-2 mm
(-0.079
")
2 mm
(0.079
")
15 mm
(0.591
"
)
-15 mm
(-0.591
")
Fig. 44: Deviation VEGAFLEX 83 in rod version (coated) in water
1 Dead band - no measurement possible in this area
L Probe length
Deviation - level measurement from 6 m
probe length
0.5 % of the probe length
4)
With interface measurement = 2.0
5)
Depending 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
6)
The dead bands can be optimizes by a false signal suppression.