Vega VEGAPULS 31 - Page 55

55
14 Supplement
VEGAPULS 31 • Two-wire 4 … 20 mA/HART
57820-EN-191014
2
1
Fig. 31: Data of the input variable
1 Reference plane
2 Measuredvariable,max.measuringrange
Max. measuring range
4)
15 m (49.21 ft)
Recommended measuring range
5)
up to 10 m (32.81 ft)
Switch-on phase
Run-up time with operating voltage U
B
< 10 s
Staring current (for run-up time) ≤3.6mA
Output variable
Output signal
4 … 20 mA/HART
Range of the output signal 3.8 … 20.5 mA/HART (default setting)
Signal resolution 0.3 µA
Resolution, digital 1 mm (0.039 in)
Fault signal, current output (adjustable) mA-value unchanged 20.5 mA, 22 mA, < 3.6 mA
Max. output current 22 mA
Starting current ≤3.6mA;≤10mAfor5msafterswitchingon
Load See load resistance under Power supply
Damping (63 % of the input variable),
adjustable
0 … 999 s
HART output values according to HART 7.0
6)
Ʋ PV (Primary Value) Lin. percent
Ʋ SV (Secondary Value) Distance
Ʋ TV (Third Value) Measurement reliability
Ʋ QV (Fourth Value) Electronics temperature
FullledHARTspecication 7.0
Further information on Manufacturer ID,
Device ID, Device Revision
See website of HART Communication Foundation
4)
Depending on application and medium
5)
With bulk solids
6)
Default values can be assigned individually.