VEGA VEGAPULS 63 (≥ 2.0.0 - ≤ 3.8) Foundation Fieldbus - Manual (Page 50)

Input variable
Measured variable distance between process fitting and product sur-
face
min. distance from flange 50 mm (1.97 in)
Measuring range depending on process fitting
-
Tri-Clamp 2", 3" up to 10 m (32.81 ft)
-
bolting DN 50, DN 80 up to 10 m (32.81 ft)
-
flange DN 50, ANSI 2" up to 10 m (32.81 ft)
-
Flange DN 80 … DN 150, Clamp 4",
ANSI
3" … 6"
up to 20 m (65.62 ft)
Reference conditions to measuring accuracy (according 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 Largest 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 5)
-
Tri-Clamp 2" 18°
-
Clamp 3", 4" 10°
-
Bolting DN 50 18°
-
Bolting DN 80 10°
-
flange DN 50, ANSI 2" 18°
-
Flange DN 80 … DN 150, ANSI 3" … 6" 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 settings)
Max. emitted HF power of the antenna system
-
Pulse peak power < 2 mW
-
Pulse duration < 2 ns
5) Corresponds to the range with 50 % of the emitted power
6) Time to output the correct level (with max. 10 % deviation) after a sudden
level change.
50 VEGAPULS 63 • Foundation Fieldbus
10 Annex
28451
-EN
-120530