Electrical Connections - Endress+Hauser PROline prowirl 72 Betriebsanleitung

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Electrical connections

➀
Fig. 1: Electrical connections Prowirl 72 resp. Prowirl 73
➀
= Ground terminal for potential equalisation
➁
= Ground terminal in the wiring compartment
Caution!
• Ground potential equalisation must exist between the safe and hazardous area.
• The transmitter is to be securely connected to the potential equalization system using
either the transmitter's esternal screw terminal ➀, or the ground terminal ➁ in the
wiring compartment.
Alternatively, the sensor and the transmitter (compact version) or the connection
housing can be connected to the potential equalization system via the pipeline when a
ground connection according to regulations can be assured.
The table below contains the values that are identical for all versions, irrespective of
the type code:
Transmitter Prowirl 72***-******D/1/2/G****W; Prowirl 73***-******D/1/2/G****W
Terminals
Designation
Intrinsically safe circuit
U
i
I
i
P
i
L
i
C
i
Transmitter Prowirl 72***-******D/1/2/G****A; Prowirl 73***-******D/1/2/G****A
Terminals
Designation
Intrinsically safe circuit
U
i
I
i
P
i
L
i
C
i
Esc
- +
E
1 (+)
Power supply / 4...20 mA HART
EEx ia or EEx ib
30 V
300 mA
1 W
negligible
5,25 nF
1 (+) 2 (–)
Power supply / 4...20 mA
HART
EEx ia or EEx ib
30 V
300 mA
1 W
negligible
5,25 nF
PROline Prowirl 72/73
➁
1 2 3 4
➀
2 (–)
3 (+) 4 (–)
Optional
Pulse/status output
EEx ia or EEx ib
30 V
300 mA
1 W
negligible
negligible
Endress+Hauser