VEGA VEGASON 64 Profibus PA User Manual
Page 50
Measuring range
-
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
-
Temperature
+
18 … +30 °C (+64 … +86 °F)
-
Relative humidity
45 … 75 %
-
Air pressure
860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Other reference conditions
-
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