Endress+Hauser prowirl 70 - ATEX Connection Examples; EEx ib Connection Diagrams

Connection examples for the EEx ib version (Prowirl 70 ****-*******B***)
en
4-20 mA
1
+
2
-
3
P
1
+
2
–
3
–
+
Safe areaHazardous area
4...20 mA
xa019y03
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
ENDRESS+HAUSER
COMPART DXF351
Compart DXF 351
20 mA
4mA
xa019y05
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
Endress+Hauser 7