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18 ProLink
®
II Software for Micro Motion
®
Transmitters
Installation and Setup
Figure 2-4 HART/Bell 202 connection to Model 1700/2700 IS transmitters
Figure 2-5 Model 1700/2700 IS transmitters: Resistance and voltage requirements for HART/Bell 202
connections
–
+
VIATOR
VIATOR
or
+
–
DCS or
PLC
R2
See Step 3
R3
See Step 3
R1
See Step 3
Primary mA output terminals
See Step 2
Transmitter
External power supply
See Step 3
USB plug
R
max
= (V
supply
– 12)/0.023
A minimum of 250 ohms and 17.5 volts is required
Supply voltage VDC (Volts)
External resistance (Ohms)
Operating range
12 3014 16 18 20 22 24 26 28
0
1000
900
800
700
600
500
400
300
200
100