VEGA VEGAPULS 67 (≥ 2.0.0 - ≤ 3.8) Profibus PA - Manual (Page 52)

Measuring range up to 15 m (49.21 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
-
False reflections Largest false echo 20 dB smaller than the useful
echo
Characteristics and performance data
Frequency K-band
Interval approx. 1 s
Beam angle -3 dB 7) 10°
Step response or adjustment time 8) > 1 s (dependent on the parameter setting)
Max. level change Adjustable up to 1 m/min. (dependent on the
parameter settings)
Max. emitted HF power of the antenna system
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Pulse peak power < 10 mW
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Pulse duration < 2 ns
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Average power < 25 µW
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Average power with 1 m distance < 1 µW/cm 2
Measuring accuracy
Resolution, general max. 1 mm (0.039 in)
Deviation 9) see diagrams
7) Corresponds to the range with 50 % of the emitted power
8) Time to output the correct level (with max. 10 % deviation) after a sudden
level change.
9) Incl. non-linearity, hysteresis and non-repeatability.
52 VEGAPULS 67 • Profibus PA
10 Supplement
32940
-EN
-100514