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VEGA VEGAFLEX 81 4 … 20 mA_HART two-wire Coax probe User Manual

Page 74

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74

11 Supplement

VEGAFLEX 81 • 4 … 20 mA/HART two-wire

42279-EN-130612

2

4

5

3

1

2

4

5

3

1

Fig. 40: 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) Last valid measured value, ≥ 21 mA, ≤ 3.6 mA
Max. output current

21.5 mA

Starting current

≤ 10 mA for 5 ms after switching on, ≤ 3.6 mA