VEGA VEGAFLEX 83 4 … 20 mA_HART two-wire Rod and cable probe - PFA insulated With SIL qualification User Manual
Page 80
80
12 Supplement
VEGAFLEX 83 • 4 … 20 mA/HART two-wire
44228-EN-130823
L
2 mm
(0.079")
0
-2 mm
(-0.079
")
15 mm
(0.591")
-15 mm
(-0.591
"
)
0,35 m
(13.78
")
0,2 m
(7.874
"
)
0,2 m
(7.874
")
0,05 m
(1.969
")
1
1
Fig. 45: Deviation VEGAFLEX 83 in cable version (coated) in oil
1 Dead band - no measurement possible in this area
L Probe length
Repeatability
≤ ±1 mm
Accuracy (according to DIN EN 60770-1)
Process reference conditions according to DIN EN 61298-1
Ʋ Temperature
+18 … +30 °C (+64 … +86 °F)
Ʋ Relative humidity
45 … 75 %
Ʋ Air pressure
+860 … +1060 mbar/+86 … +106 kPa
(+12.5 … +15.4 psig)
Installation reference conditions
Ʋ Min. distance to installations
> 500 mm (19.69 in)
Ʋ Vessel
metallic, ø 1 m (3.281 ft), centric installation, process
fitting flush with the vessel ceiling
Ʋ Medium
Water/Oil (dielectric constant ~2.0)
7)
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
8)9)
See following diagrams
7)
With interface measurement = 2.0
8)
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
9)
The dead bands can be optimizes by a false signal suppression.