VEGA VEGAPULS 62 (≥ 2.0.0 - ≤ 3.8) Foundation Fieldbus - Manual (Page 56)

Channel Numbers
-
Channel 1 Primary value
-
Channel 2 Secondary value 1
-
Channel 3 Secondary value 2
Transmission rate 31.25 Kbit/s
Current value 10 mA, ±0.5 mA
Damping (63 % of the input variable) 0 … 999 s, adjustable
Input variable
Measured value distance between process fitting and product sur-
face
Min. distance from antenna end 50 mm (1.969 in)
Recommended meas. range depending on the antenna diameter
-
ø 40 mm (1.575 in) up to 10 m (32.81 ft)
-
ø 48 mm (1.89 in) up to 15 m (49.21 ft)
-
ø 75 mm (2.953 in), ø 95 mm (3.74 in),
parabolic antenna
up to 30 m (98.43 ft)
Max. measuring range up to 35 m (114.83 ft)
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
Beam angle -3 dB with horn antenna, depending on antenna diameter
-
ø 40 mm (1.575 in) 22°
-
ø 48 mm (1.89 in) 18°
-
ø 75 mm (2.953 in) 10°
-
ø 95 mm (3.74 in) 8°
Beam angle -3 dB with parabolic antenna 4°
56 VEGAPULS 62 • Foundation Fieldbus
10 Supplement
28450
-EN
-090305