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40 Micro Motion
®
Model 1700 and 2700 Transmitters
Output Wiring – Model 1700/2700 Intrinsically Safe Transmitters
Figure 5-8 Hazardous area frequency/discrete output wiring using galvanic isolator
Figure 5-9 Hazardous area frequency/discrete output wiring using barrier with external load resistance
External power supply
R
load
V
out
Galvanic isolator
Hazardous area Safe area
COUNTER
Note: R
barrier
and R
load
should be added together to
determine the proper V
in
. Refer to Figure 5-6.
Hazardous area Safe area
Ground
V
out
V
in
R
barrier
R
load
COUNTER