VEGA VEGAFLEX 66 (-20…+250°C) 4 … 20 mA_HART two-wire - Manual (Page 50)

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2. HART value (Secondary Value) D istance to the level - scaled (for example hl, %)
R
esolution, digital
> 1 mm (0.039 in)
Accuracy (similar to DIN EN 60770-1)
P rocess reference conditions according to DIN EN 61298-1
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T emperature + 18 … +30 °C (+64 … +86 °F)
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R elative humidity 45 … 75 %
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A ir pressure + 860 … +1060 mbar/+86 … +106 kPa
(+12.5 … +15.4 psig)
I nstallation reference conditions
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M in. distance to installations > 500 mm (19.69 in)
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V essel metallic, ø 1 m (3.281 ft), centric installation,
process fitting flush with the vessel ceiling
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M edium W ater/Oil (Dk value ~2.0)
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I nstallation P robe end does not touch the vessel bottom
S ensor parameter adjustment G ating out of false signals carried out
I
n bulk solids applications, implementing a false
signal suppression is generally not recommended.
T
he accuracy of bulk solid applications depends
considerably on the application. Hard and fast
accuracy specifications are thus not available.
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.
50 VEGAFLEX 66 • 4 … 20 mA/HART two-wire
10 S upplement
34169
-EN
-100426