Emerson Process Management LF-Series Marine Sanitation System User Manual


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28 LF-Series Flowmeters: Sensor/Transmitter Installation
I/O Wiring – FM AN Transmitters
Figure 6-1 Basic analog wiring
Figure 6-2 HART/analog single-loop wiring
+
–
mA output loop
820 Ω maximum loop resistance
Frequency receiving device
+
–
00042
Output voltage level is +24 VDC ± 3%
820 Ω maximum loop resistance
For HART communications:
• 600 Ω maximum loop resistance
• 250 Ω minimum loop resistance
+
–
HART-
compatible host
or controller
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