VEGA VEGAPULS 51K…54K Profibus PA User Manual
Page 47
VEGAPULS 51P … 54P
47
24890-EN-041227
Technical data
Characteristics
1)
(typical values under reference conditions, all statements relate to the nominal measuring
range)
Min. span between
full and empty
> 10 mm (recommended > 50 mm)
Frequency
5.8 GHz (USA 6.3 GHz)
Intervals
0.6 s
Beam angle (at –3 dB)
- VEGAPULS 51 … 53
< 24°
- VEGAPULS 54 with DN 80
38° (only suitable for standpipe measurement)
- VEGAPULS 54 with DN 100
30°
- VEGAPULS 54 with DN 150
20°
- VEGAPULS 54 with DN 200
16°
- VEGAPULS 54 with DN 250
14°
Influence of the process temperature
at 0 bar not measurable; at 5 bar 0.004 %/10 K;
at 40 bar 0.03 %/10 K
Influence of the process pressure
0.0265 %/bar
Adjustment time
3)
> 1 s (depending on parameter setting)
Emitted radar power (average)
0.717 µW
Received average emitted power
4)
- distance 1 m
0.5 … 1.5 nW per cm
2
(0.5 … 1.5 x 10
-9
W/cm
3
)
- distance 5 m
0.02 … 0.06 nW per cm
2
Connection cables
Two-wire sensors
power supply and signal via one two-wire
cable
Electrical connection
- spring-loaded terminals (max. 2.5 mm
2
)
- plug connection
Cable entry
- ia terminal compartment
2 x M20 x 1.5 (cable diameter 5 … 9 mm)
or 2 x
1
/
2
“ NPT (cable diameter
3.6 … 8.7 mm or 0.12 … 0.34 inch)
- Ex d terminal compartment
1 x
1
/
2
“ NPT EEx d (cable diameter
3.6 … 8.7 mm or 0.12 … 0.34 inch)
Ground connection
max. 4 mm
2
2)
Similar to DIN 16 086, reference conditions acc. to IEC 770, e.g.
temperature 15 °C … 35 °C; moisture 45 % … 75 %; pressure 860 mbar … 1060 mbar
2)
The adjustment time (also actuating time, response time or adjustment period) is the time required by the
sensor to output the correct level (with max. 10% deviation) after a sudden level change.
3)
Average emitted power (electromagnetic energy) received by a body per cm² directly in front of the antenna.
The received emitted power depends on the antenna version and the distance.