Endress+Hauser Micropilot FMR20 - Connecting the device

Electrical connection Micropilot FMR20 HART
24 Endress+Hauser
6.3 Connecting the device
6.3.1 4 to 20 mA HART block diagram
Connection of the device with HART communication, power source and 4 to 20 mA display
2
3
Y
+ +
- -
I
1
mA
A0028908
 20 Block diagram of HART connection
1 Device with HART communication
2 HART resistor
3 Power supply
The HART communication resistor of 250 Ω in the signal line is always necessary in
the case of a low-impedance power supply.
The voltage drop to be taken into account is:
Max. 6 V for 250 Ω communication resistor