VEGA VEGAPULS 68 (≥ 2.0.0 - ≤ 3.8) 4 … 20 mA_HART two-wire - Manual (Page 58)

M ax. level change A djustable up to 1 m/min. (dependent on the
parameter adjustment)
M ax. emitted HF power of the antenna system
-
P ulse peak power < 10 mW
-
P ulse duration
< 2 ns
-
A
verage power
< 25 µW
-
A verage power with 1 m distance < 1 µW/ cm 2
Measuring accuracy
R esolution, general max. 1 mm (0.039 in)
D eviation 4) see diagrams
30 mm (1.180 in)
15 mm (0.590 in)
0
-15 mm (- 0.590 in)
- 30 mm (- 1.180 in)
1,0 m (3.280 ft) 70 m (229.7 ft)
Fig. 38: Deviation VEGAPULS 68 with horn antenna
2,0 m (6.562 ft) 70 m (229,7 ft)
40 mm (1.574 in)
15 mm (0.590 in)
- 15 mm (- 0.590 in)
- 40 mm (- 1.574 in)
0
Fig. 39: Accuracy VEGAPULS 68 with parabolic antenna
4) I ncl. non-linearity, hysteresis and non-repeatability.
58 VEGAPULS 68 • 4 … 20 mA/HART two-wire
10 S upplement
29261
-EN
-090305