Endress+Hauser Prosonic S FMU90 PROFIBUS DP - Page 36

Electrical connection Prosonic S FMU90 PROFIBUS DP
36 Endress+Hauser
Technical data for sensor heater
• Supply voltage
24 V
DC
±10 %
• Residual ripple
< 100 mV
• Current consumption
250 mA per sensor
Temperature compensation with sensor heater
If the sensor heater is used, connect an external temperature sensor to correct the
sound time-of-flight and assign this temperature sensor to the sensor.
Connection of the sensor heater in the polycarbonate field housing
Valid for:
Order code 030 (housing, material)
Option 1 (PC field mounting, IP66 NEMA4x)
Display
POWER
HART
0/4…20mA
Sync
Fuse
I
1
FDU-
Sensor
RD
11
BK
10
YE
9
40
39
5
4
6
7
8
Service
Relay
3
2
1
4
FDU90
FDU91
1
1
3
24 VDC
+
-
2
RD
BK
YE
A B C D
A +
B BN
C -
D BU
A0032574
 30 Connection of the sensor heater in the polycarbonate field housing
1 Terminal module for sensor heater (included in the delivery for the sensors concerned)
2 External power supply unit
3 Brown wire (BN)
4 Blue wire (BU)
Connection of the sensor heater in the aluminum field housing
Valid for:
Order code 030 (housing, material)
Option 3 (field mounting, aluminum, IP66 NEMA4x)