VEGA VEGAPULS 62 (≥ 2.0.0 - ≤ 3.8) Profibus PA - Manual (Page 55)

Input variable
Measured value distance between process fitting and product sur-
face
Min. distance from antenna end 50 mm (1.969 in)
Recommended meas. range depending on the antenna diameter
-
ø 40 mm (1.575 in) up to 10 m (32.81 ft)
-
ø 48 mm (1.89 in) up to 15 m (49.21 ft)
-
ø 75 mm (2.953 in), ø 95 mm (3.74 in),
parabolic antenna
up to 30 m (98.43 ft)
Max. measuring range up to 35 m (114.83 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
-
False reflections Biggest false echo, 20 dB smaller than the useful
echo
Characteristics and performance data
Frequency K-band (26 GHz technology)
Meas. interval approx. 1 s
Beam angle 3 dB
-
Encapculated antenna system 22°
-
Plastic horn antenna 10°
Step response or adjustment time 6) < 1 s (dependent on the parameter settings)
Max. level change Adjustable up to 1 m/min. (dependent on the
parameter adjustment)
Max. emitted HF power of the antenna system
-
Pulse peak power < 2 mW
-
Pulse duration < 2 ns
-
Average power < 5 µW
-
Average power with 1 m distance < 200 nW/cm 2
Max. emitted HF power of the antenna system - Version with increased sensitivity
-
Pulse peak power < 10 mW
-
Pulse duration < 2 ns
6) Time to output the correct level (with max. 10 % deviation) after a sudden
level change.
VEGAPULS 62 • Profibus PA 55
10 Supplement
28445
-EN
-090305