VEGA VEGAPULS SR 68 HART and accumulator pack - Manual (Page 64)

64
11 Supplement
VEGAPULS SR 68 • HART and accumulator pack
40934-EN-130624
3
4
2
1
Fig. 47: Data of the input variable
1 Reference plane
2 Measured variable, max. measuring range
3 Antenna length
4 Useful measuring range
Max. measuring range 30 m (98.43 ft)
Recommended meas. range depending on the antenna diameter
Ʋ ø 40 mm (1.575 in) up to 15 m (49.21 ft)
Ʋ ø 48 mm (1.89 in) up to 20 m (65.62 ft)
Ʋ ø 75 mm (2.953 in), 95 mm (3.74 in) up to 30 m (98.43 ft)
Ʋ Parabolic antenna up to 30 m (98.43 ft)
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 Biggest false signal, 20 dB smaller than the useful signal
Deviation with liquids See following diagrams