45
11 Supplement
VEGAPULS WL 61 • 4 … 20 mA/HART - two-wire
38061-EN-121011
3
4 2
1
Fig. 44: Data of the input variable
1 Reference plane
2 Measured variable, max. measuring range
3 Antenna length
4 Useful measuring range
Max. measuring range
15 m (49.21 ft)
Output variable
Output signal
4 … 20 mA/HART
Fulfilled HART specification
7.0
Signal resolution
0.3 µA
Failure 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 diagram under Power supply
Damping (63 % of the input variable),
adjustable
0 … 999 s
HART output values according to HART 7.0
1)
Ʋ PV (Primary Value)
Distance to the level
Ʋ SV (Secondary Value)
Level as percentage value
Ʋ TV (Third Value)
Linearised percentage value
Ʋ QV (Fourth Value)
Scaled measured value
Resolution, digital
< 1 mm (0.039 in)
Accuracy (according to DIN EN 60770-1)
Process reference conditions according to DIN EN 61298-1
Ʋ Temperature
+18 … +30 °C (+64 … +86 °F)
Ʋ Relative humidity
45 … 75 %
Ʋ Air pressure
860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)
1)
Default values, can be assigned individually