VEGA VEGAPULS 63 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA_HART - two-wire - Manual (Page 51)

Input variable
M easured variable distance between process fitting and product sur-
face
min. distance from flange 50 mm (1.97 in)
M easuring range depending on process fitting
-
T ri-Clamp 2", 3" up to 10 m (32.81 ft)
-
bolting DN 50, DN 80 up to 10 m (32.81 ft)
-
fl
ange DN 50, ANSI 2" up to 10 m (32.81 ft)
-
F lange 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)
R eference conditions according to DIN EN 61298-1
-
T emperature + 18 … +30 °C (+64 … +86 °F)
-
R elative humidity 45 … 75 %
-
A ir pressure 860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
O ther reference conditions
-
R eflector ideal reflector, e.g. metal plate 2 x 2 m
-
F alse reflections L argest false echo 20 dB smaller than the useful
echo
Characteristics and performance data
F requency K- band (26 GHz technology)
M eas. interval approx. 1 s
B eam angle -3 dB 5)
-
T ri-Clamp 2" 18°
-
C lamp 3", 4" 10°
-
B olting DN 50 18°
-
B olting DN 80 10°
-
fl ange DN 50, ANSI 2" 18°
-
F lange DN 80 … DN 150, ANSI 3" … 6" 10°
S tep response or adjustment time 6) < 1 s (dependent on the parameter settings)
M ax. level change A djustable up to 1 m/min. (dependent on the
parameter settings)
M ax. emitted HF power of the antenna system
-
P
ulse peak power
< 2 mW
-
P ulse duration < 2 ns
5) C orresponds to the range with 50 % of the emitted power
6) T ime to output the correct level (with max. 10 % deviation) after a sudden
level change.
VEGAPULS 63 • 4 … 20 mA/HART - two-wire 51
10 A nnex
28436
-EN
-120530