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24 Micro Motion
®
Model 2400S Transmitters
I/O Wiring – Model 2400S Analog Transmitters
Figure 3-17 Hazardous area frequency/discrete output wiring using galvanic isolator
Figure 3-18 Hazardous area frequency/discrete output wiring using barrier with external load resistance
Hazardous area Safe area
External power supply
V
out
R
load
Galvanic isolator
COUNTER
Hazardous area Safe area
V
out
R
load
COUNTER
V
in
R
barrier
Note: R
barrier
and R
load
should be added together to
determine the proper V
in
. Refer to Figure 3-19.
R
barrier