Vega VEGAFLEX 83 Modbus and Levelmaster protocol PFA in Manual de usuario descargar pdf (Pagina 68)

11 Supplement

VEGAFLEX 83 • Modbus and Levelmaster protocol

41838-EN-130314

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

tting ush 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

Typical deviation - Interface measure-

ment

± 5 mm (0.197 in)

Typical deviation - Total level interface

measurement

See following diagrams

Typical deviation - Level measurement

2)3)

See following diagrams

0,2 m

(7.874")

0,1 m

(3.937")

0,04 m

(1.575

-2mm

(-0.079")

2mm

(0.079")

15mm

(0.591"

)

-15mm

(-0.591

Fig.35: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

with interface measurement = 2.0

Depending on the installation conditions, there can be deviations which can be rectied with an adaptation of

the adjustment or a change of the measured value oset in the DTM service mode

The dead bands can be optimizes by a false signal suppression.

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