65
11 Supplement
VEGAFLEX 83 • 4 … 20 mA/HART - two-wire
41834-EN-120726
Failure signal current output (adjustable) Last valid measured value, ≥ 21.0 mA, ≤ 3.6 mA
Max. output current
22 mA
Starting current
≤ 3.6 mA; ≤ 10 mA for 5 ms after switching on
Load
see load diagram under Power supply
Damping (63 % of the input variable),
adjustable
0 … 999 s
HART output values according to HART 7 (default setting)
1)
Ʋ PV (Primary Value)
Linearised percentage value, level
Ʋ SV (Secondary Value)
Distance to the level
Ʋ TV (Third Value)
Measurement certainty, level
Ʋ QV (Fourth Value)
Electronics temperature
Indication value - Indicating and adjustment module
2)
Ʋ Displayed value 1
Filling height - level
Ʋ Displayed value 2
Electronics temperature
Resolution, digital
< 1 mm (0.039 in)
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)
Ʋ Installation
Probe end does not touch the vessel bottom
Sensor parameter adjustment
Gating out of false signals carried out
Deviation
3)4)
see diagrams
1)
The output values can be assigned individually
2)
The indication values can be assigned individually
3)
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
4)
The dead bands can be optimizes by a false signal suppression.