VEGA VEGAPULS WL 61 4 … 20 mA_HART - two-wire - Manual (Page 45)

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