VEGA VEGASON 64 Profibus PA - Manual (Page 50)

Measuring range
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Liquids up to 25 m (82.02 ft)
-
Bulk solids up to 15 m (49.21 ft)
Dead band 1 m (3.3 ft)
Reference conditions to measuring accuracy (similar to DIN EN 60770-1)
Reference conditions according to DIN EN 61298-1
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Temperature + 18 … +30 °C (+64 … +86 °F)
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Relative humidity 45 … 75 %
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Air pressure 860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Other reference conditions
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Reflector ideal reflector, e.g. metal plate 2 x 2 m (6.56 x 6.56 ft)
-
False reflections Biggest false echo, 20 dB smaller than the useful
echo
Measuring characteristics
Ultrasonic frequency 30 kHz
Interval > 2 s (dependent on the parameter adjustment)
Beam angle at 3 dB 4°
Adjustment time 6) > 3 s (dependent on the parameter adjustment)
Measuring accuracy
Resolution, general > 1 mm (0.039 in)
Deviation 7) see diagram
6) Time to output the correct level (with max. 10 % deviation) after a sudden
level change.
7) Incl. non-linearity, hysteresis and non-repeatability.
50 VEGASON 64 • Profibus PA
10 Supplement
28787
-EN
-081127