VEGA VEGAFLEX 81 4 … 20 mA_HART two-wire Coax probe With SIL qualification - Manual (Page 74)

74
12 Supplement
VEGAFLEX 81 • 4 … 20 mA/HART two-wire
44216-EN-130823
2
4
5
3
1
2
4
5
3
1
Fig. 38: Measuring ranges - VEGAFLEX 81
1 Reference plane
2 Probe length L
3 Measuring range (default setting refers to the measuring range in water)
4 Upper dead band (see diagrams under Accuracy - grey section)
5 Lower dead band (see diagrams under Accuracy - grey section)
Output variable
Output signal
4 … 20 mA/HART
Range of the output signal 3.8 … 20.5 mA/HART (default setting)
Fulfilled HART specification 7
Signal resolution 0.3 µA
Failure signal current output (adjustable) ≥ 21 mA, ≤ 3.6 mA
Max. output current
21.5 mA
Starting current ≤ 10 mA for 5 ms after switching on, ≤ 3.6 mA