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56 LF-Series Flowmeters: Sensor/Transmitter Installation
I/O Wiring – DIN CIO Transmitters
Figure 10-3 HART/analog single-loop wiring
Figure 10-4 HART multidrop wiring with SMART FAMILY
™
transmitters and a configuration tool
HART-compatible
host or controller
+
–
820 Ω maximum loop resistance
For HART communications:
•600 Ω maximum loop resistance
•250 Ω minimum loop resistance
ProLink II v2.x,
HART Communicator, or
AMS software
HART-compatible
transmitters
SMART FAMILY
™
transmitters
Note: For optimum HART communication, make
sure the output loop is single-point-grounded to
an instrument-grade ground.
24 VDC loop power
supply required for
HART 4–20 mA
passive transmitters
LF-Series DIN
CIO transmitter
600 Ω maximum resistance
250 Ω minimum resistance