Connection examples for the EEx ib version (Prowirl 70 ****-*******B***)
en
4-20 mA
1 +
2 -
3 P
1 +
2
–
3
–
+
Safe area
Hazardous area
4...20 mA
x
a01
9y
03
Intrinsically safe power supply:
[EEx ib] IIC
12...30 V
18,5...30 V (HART/Intensor)
I
max
= 300 mA
P
max
= 1 W
Fig. 3
4...20 mA with intrinsically safe
power supply
1 +
2 -
3 P
1 +
2
–
3 +P
–
–
–
+
+
+
Cenelec conform Zener barrier
(e.g. Stahl 9001/01-280-110-10)
4...20 mA
xa019y04
Hazardous area
Safe area
Fig. 4
4...20 mA power supply via
Zener barrier
1 +
2 -
3 P
1 +
2 –
3 +P
–
–
2–
+
+
1+
ESC
DIAG
E
F1
F2
F3
HAUSER
COMPART DXF 351
Compart DXF 351
20 mA
4 mA
x
a
019y
0
5
non-scalable
Vortex frequency
1...2850 Hz
pulse width 0,18 ms
Hazardous area
Safe area
Cenelec conform Zener barrier
(e.g. Stahl 9002/13-280-093-00)
Fig. 5
PFM two-wire current pulse
output
Power supply:
12...30 V
18,5...30 V
(HART/Intensor)
Prowirl 70
Hauser
7
