VEGA VEGAPULS 61 (≥ 2.0.0 - ≥ 4.0.0) Profibus PA User Manual
Page 65
65
11 Supplement
VEGAPULS 61 • Profibus PA
36501-EN-121011
Number of FBs with AI (function blocks
with analogue input)
3
Default values
Ʋ 1. FB
PV
Ʋ 2. FB
SV 1
Ʋ 3. FB
SV 2
Current value
Ʋ Non-Ex and Ex ia instrument
10 mA, ±0.5 mA
Ʋ Ex-d instruments
16 mA, ±0.5 mA
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
> 200 mm (7.874 in)
Ʋ Reflector
Plane plate reflector
Ʋ False reflections
Largest false echo 20 dB smaller than the useful echo
Deviation with liquids
See following diagrams
0,5 m (1.6 ft)
10 mm (0.394 in)
- 10 mm (- 0.394 in)
2 mm (0.079 in)
- 2 mm (- 0.079 in)
0
1 2
3
Fig. 56: Deviation under reference conditions - encapsulated antenna system
1 Reference plane
2 Antenna edge
3 Recommended measuring range