VEGA VEGAFLEX 81 HART - integrated accumulator User Manual
Page 71
71
11 Supplement
VEGAFLEX 81 • HART - integrated accumulator
44640-EN-130430
Ʋ Cable probes
ε
r
≥ 1.6
Ʋ Rod probes
ε
r
≥ 1.6
2
4
5
3
2
4
5
3
1
1
Fig. 37: Measuring ranges - VEGAFLEX 81
1 Reference plane
2 Probe length L
3 Measuring range (default setting refers to the measuring range in water)
4 Upper dead band (see diagrams under Accuracy - grey section)
5 Lower dead band (see diagrams under Accuracy - grey section)
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)
1)
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)
1)
With interface measurement = 2.0