VEGA VEGAFLEX 83 4 … 20 mA_HART - four-wire Polished version User Manual
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69
11 Supplement
VEGAFLEX 83 • 4 … 20 mA/HART - four-wire
41840-EN-130314
Torque for exchangeable rod probe (in
the process fitting)
4.5 Nm ±0.5 (3.32 lbf ft)
Torque for NPT cable glands and Conduit tubes
Ʋ Plastic housing
max. 10 Nm (7.376 lbf ft)
Ʋ Aluminium/Stainless steel housing
max. 50 Nm (36.88 lbf ft)
Input variable
Measured variable
Level of liquids
Min. dielectric constant of the medium
ε
r
≥ 1.6
2
4
5
3
1
Fig. 35: Measuring ranges - VEGAFLEX 83
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 signals
4 … 20 mA/HART - active; 4 … 20 mA/HART - passive
Terminal voltage passive
9 … 30 V DC
Shortcircuit protection
Available
Potential separation
Available
Signal resolution
0.3 µA
Failure signal current output (adjustable) Last valid measured value, ≥ 21.0 mA, ≤ 3.6 mA
Max. output current
22 mA
Starting current
≤ 3.6 mA