Instruction manual

RFT9739 Rack-Mount Transmitter Instruction Manual 105
Replacing Older Transmitters
continued
Step 3
Installing the RFT9739 transmitter
Follow these instructions to mount and wire the new RFT9739
transmitter:
a. Mount the RFT9739 transmitter in accordance with the instructions in
Chapter 3
, page 11.
b. Connect power-supply wiring and ground wires to the RFT9739
transmitter in accordance with the instructions in
Chapter 4
, page 17.
c. Connect the flowmeter and output wiring from the old transmitter to
the appropriate terminals on the RFT9739 transmitter.
•
Figure F-1
shows the terminals on a Model RFT9739
• Refer to
Figure F-2
and
Table F-2
for a Model RE-01
• Refer to
Figure F-3
and
Table F-3
for a Model RFT9712
• Refer to
Figure F-4
and
Table F-4
for a Model RFT9729
d. If the sensor has a copper RTD, temperature lead length
compensation is necessary for proper operation.
• Connect the orange and yellow wires at the sensor end, to sensor
terminal 4.
• Alternatively, if the sensor is not easily accessible, and the cable that
connects the sensor and transmitter is 50 feet (15 meters) or less,
install a jumper between RFT9739 transmitter terminals CN1-B6
and CN1-B4.
e. Proceed to Step 4, page 109.
Figure F-1. RFT9739 terminals
WARNING
Hazardous voltage can cause severe injury or death.
Shut off power before disconnecting the transmitter.