VEGA VEGASON 61 4 … 20 mA_HART - four-wire User Manual
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10 Supplement
VEGASON 61 • 4 … 20 mA/HART - four-wire
28778-EN-130417
Ʋ Relative humidity
45 … 75 %
Ʋ Air pressure
860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
Other reference conditions
Ʋ Reflector
ideal reflector, e.g. metal plate 2 x 2 m (6.56 x 6.56 ft)
Ʋ False reflections
Biggest false signal, 20 dB smaller than the useful signal
Measuring characteristics
Ultrasonic frequency
70 kHz
Interval
> 2 s (dependent on the parameter adjustment)
Abstrahlwinkel at -3 dB
11°
Step response or adjustment time
5)
> 3 s (dependent on the parameter adjustment)
Measuring accuracy
Resolution, general
> 1 mm (0.039 in)
Deviation
6)
see diagram
5 m (16.404 ft)
4 m (13.123 ft)
3 m (9.843 ft)
2 m (6.562 ft)
1 m (3.28 ft)
10 mm (0.394 in)
4 mm (0.157 in)
-10 mm (-0.394 in)
-4 mm (-0.157 in)
Fig. 25: Deviation VEGASON 61
Influence of the ambient temperature to the sensor electronics
7)
Average temperature coefficient of the
zero signal (temperature error)
0.06 %/10 K
Ambient conditions
Ambient, storage and transport tempera-
ture
-40 … +70 °C (-40 … +158 °F)
Process conditions
Process pressure
-20 … 200 kPa/-0.2 … 2 bar (-2.9 … 29 psig)
Process temperature (transducer tem-
perature)
-40 … +80 °C (-40 … +176 °F)
Vibration resistance
mechanical vibrations with 4 g and 5 … 100 Hz
8)
Electromechanical data - version IP 66/IP 67
Cable entry
5)
Time to output the correct level (with max. 10 % deviation) after a sudden level change.
6)
Incl. non-linearity, hysteresis and non-repeatability.
7)
Relating to the nominal measuring range.
8)
Tested according to the guidelines of German Lloyd, GL directive 2.