Emerson MICRO MOTION 2700 - 5.5.1 Configure Fault Timeout

8.5.1 Hazardous area mA output wiring
Hazardous area mA output wiringFigure 8-8:
A
B
C
D
4-20 mA
E
Hazardous area
Safe area
A. V
in
B. V
out
C. Ground
D. R
load
E. R
barrier
Note
Add R
load
and R
barrier
to determine V
in
.
Safe area mA output load resistance valuesFigure 8-9:
1000
900
800
700
600
500
400
300
200
100
0
12 14 16 18 20 22 24 26 28 30
OPERATING REGION
Supply voltage VDC (Volts)
External resistor R
load
(Ohms)
R
max
= (V
supply
– 12)/0.023
Min. 250Ω and 17.5V required for HART communication
I/O wiring for Model 1700 and Model 2700 transmitters with intrinsically safe outputs
86 Micro Motion
®
Model 1700 and 2700