Vega FIBERTRAC 31 4 … 20 mA_HART - four-wire With SIL q Bedienungsanleitung PDF herunterladen (Seite 23)

5 Connecting to power supply

FIBERTRAC 31 • 4 … 20 mA/HART - four-wire

43386-EN-131119

2122 1920 18 17 14 1316 15 12

Fig. 13: Electronics and connection compartment (Ex-d) with instruments with

intrinsically safe current output

1 Voltage supply

2 Relay output

3 Interface for sensor-sensor communication (MGC)

4 Setting the bus address for sensor-sensor communication (MGC)

567

( )

(-)

Fig. 14: Adjustment and connection compartment (Ex-ia) with instruments with

intrinsically safe current output

1 Terminals for intrinsically safe signal output 8/16 mA/HART (Multidrop) ac-

tive (not on versions with Ex-d approval)

2 Contact pins for the display and adjustment module or interface adapter

3 Terminals for the external display and adjustment unit

4 Ground terminal

5.4 Connection - Summation

To measure the level in very high vessels, multiple instruments can be

cascaded.

Cascading means that two or several instruments are connected

which can together cover a longer measuring range.

Electronics and connec-

tion compartment - In-

struments with intrinsi-

cally safe current output

Adjustment and connec-

tion compartment - In-

struments with intrinsi-

cally safe current output

Electronics and connec-

tion compartment - sum-

mation

MGC = Multi Gauge Communication

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Vega FIBERTRAC 31 4 … 20 mA_HART - four-wire With SIL q Bedienungsanleitung Seite 23