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16 ProLink
®
II Software for Micro Motion
®
Transmitters
Installation and Setup
Method 3: HART/Bell 202 temporary connection to RFT9739 rack-mount transmitters
1. At the PC, connect the VIATOR HART Interface to the PC’s serial or USB port.
2. Attach the leads of a Bell 202 cable to the leads of the VIATOR HART Interface, and insert the
cable prongs into the HART jack on the transmitter’s faceplate (see Figure 2-3). The
connection is polarity-insensitive; you can insert the cable prongs in either direction.
3. If necessary, add resistance in the loop by installing resistor R1 with a resistance of
250–1000 Ω
. Note that the hookups use the same circuit as the primary mA output, so the
required resistance may already be installed if the primary mA output loop is connected to a
remote device or a HART network.
Figure 2-3 Using the HART jack
VIA
VIA
TOR
TOR
R1
HART jack
Bell 202 cable (not included)
or
USB plug