VEGA VEGAFLEX 83 4 … 20 mA_HART - four-wire Polished version - Manual (Page 69)

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