Vega VEGABAR 75 4 … 20 mA_HART Bedienungsanleitung PDF herunterladen (Seite 33)

1000

710

500

250

12 18

1614 20 22 24 26 28 29 30 32 34 36

Ω

V

1

4

2

3

Fig. 11: Voltage diagram VEGABAR 75

1 HART load

2 Voltage limit Ex instrument

3 Voltage limit non-Ex instrument

4 Voltage supply

Load in conjunction with VEGADIS 12 see diagram

Ω

450

712,5

250

18 24 29 3633

3

4

2

1

V

Fig. 12: Voltage diagram VEGABAR 75 with VEGADIS 12

1 HART load

2 Voltage limit Ex instrument

3 Voltage limit non-Ex instrument

4 Voltage supply

Integrated overvoltage protection

Nominal leakage current (8/20 µs) 10 kA

Supplement

VEGABAR 75 - 4 … 20 mA/HART 33

28433-EN-070718

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