VEGA VEGAPULS 62 (≥ 2.0.0 - ≤ 3.8) standpipe ver. Foundation Fieldbus - Manual (Page 46)

Input variable
Measured value Distance between process fitting (seal surface
hexagon or lower edge of flange) of the sensor and
product surface
Min. distance 0 mm
Measuring range up to 5.85 m (19.19 ft) 6)
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
Step response or adjustment time 7) < 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
-
Average power < 25 µW
-
Average power with 1 m distance < 1 µW/ cm
2
Measuring accuracy
Resolution, general < 1 mm (0.039 in)
6) According to the respective standpipe length.
7) Time to output the correct level (with max. 10 % deviation) after a sudden
level change.
46 VEGAPULS 62 standpipe version • Foundation Fieldbus
10 Supplement
28740
-EN
-090305