VEGA VEGAPULS 45 4 … 20 mA; HART compact sensor - Manual (Page 55)

VEGAPULS 42, 44 and 45 – 4 … 20 mA 55
Accuracy 1)
(typical values under reference conditions, all statements relate to the nominal measuring
range)
Characteristics linear
Resolution, general max. 1 mm
Resolution of the output signal 1.6 µA or 0.01 %
Accuracy see diagram
Measurement 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 26 GHz technology
Intervals
- two-wire sensor 0.6 s
- four-wire sensor 0.5 s
Beam angle (at -3 dB)
- VEGAPULS 42 22°
optional 18°, 10° and 8° when using large coupling horns
deviating from the nominal dimension
- VEGAPULS 44
DN 50, ANSI 2“ 18°
DN 80, ANSI 3“ 10°
DN 100, ANSI 4“ 8°
DN 150, ANSI 6“ 8°
- VEGAPULS 45 not applicable, as the meas. tube acts as
waveguide
Adjustment time (response time) 2) > 1 s (dependent on the parameter adjustment)
Influence of the process temperature cannot be measured at 0 bar;
at 5 bar 0.004 %/10 °K;
at 40 bar 0.03 %/10 °K
Influence of the process pressure 0.0265 %/bar
Adjustment time 2) > 1 s (dependent on the parameter adjustment)
Emitted radar power (average) 0.717 µW
Received average emitted power 3)
- distance 1 m 0.4 … 3.2 nW per cm² (0.4 … 3.2 x 10 -9 W/cm²)
Technical data
1) 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.
0,5 m 30 m
10 mm
3 mm
-3 mm
-10 mm